DC1605B - LINEAR TECHNOLOGY

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DEMO MANUAL DC1605B

DESCRIPTION

Programmable Hex

Voltage Supervisor Featuring

the LTC2936 with EEPROM

The DC1605B is a demonstration system that showcases

the LT C

2936, a 6-channel I2C/SMBus voltage supervisor

with EEPROM. The LTC2936 simultaneously monitors up

to six power supply voltages and detects undervoltage and

overvoltage conditions. In addition the LTC2936 monitors

two GPI pins and is able to drive three GPIO pins to indicate

OV, UV, system reset, system alert, or other control signal.

The DC1605B is a single circuit board that contains the

LTC2936 and support circuitry to provide the ability to dem-

onstrate features and capabilities of the LTC2936 without

the need for external power supplies. The DC1605B demo

board provides an accurate voltage supervision of six chan-

nels and offers over/undervoltage thresholds in various

ranges and increments that are digitally programmable.

This demonstration system is supported by the

LTpowerPlay™ graphical user interface (GUI) which en-

ables complete control of all the features of the device.

Together, the LTpowerPlay software and DC1605B hard-

ware system create a powerful development environment

for designing and testing configuration settings of the

LTC2936. These settings can be stored in the device’s

internal EEPROM or in a file. This file can later be used

to order pre-programmed devices or to program devices

in a production environment. The software displays all of

the configuration settings and real time measurements

from the system supervisor and peripheral ICs. Telemetry

allows easy access and decoding of the fault log created

by the LTC2936. The board comes pre-programmed with

the EEPROM values appropriate for the six power supply

rails on the DC1605B. Just plug and play!

The LTC2936 chip is mounted on the topside of the board

with support ADC and DAC circuitry on the back.

The ADC provides voltage readings for all six voltage

supervisor inputs on the LTC2936 and also reads the GPI

and GPIO voltages. The DAC drives six programmable

voltages that are used to emulate the user’s system rails.

The extra support circuitry allows the user to evaluate L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the

property of their respective owners.

the LTC2936 quickly and without the need for external

voltmeters or power supplies.

The DC1605B demo board can be powered by an external

power supply, such as a 12VDC supply. Communication

with the software is provided through the DC1613 USB-to-

I2C/SMBus/PMBus Controller. The following is a checklist

of items which can be obtained from the LT C website or

LT C Field Sales.

n USB-to-I2C/SMBus/PMBus Controller (DC1613)

n LTpowerPlay Software

DC1605B Features

n Supervise Six Power Supplies

n Powered from USB Dongle, Power Jack, or VIN

n I2C Adjustable OV/UV Trip Points

n Guaranteed Threshold Accuracy: ±1%

n I2C/SMBus Serial Interface

n Internal EEPROM

n Six Comparator Outputs

n 256 Programmable Thresholds per Channel

n Up to Three Range Settings per Channel

n Tw o General Purpose Inputs

n Three General Purpose Inputs/Outputs

n Programmable Output Delays

n Autonomous Operation without Additional Software

n Supported by LTpowerPlay GUI

n LTC2936 Available in 24-Lead QFN and SSOP Packages

Design files for this circuit board are available at

http://www.linear.com/demo/DC1605B

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DEMO MANUAL DC1605B

PERFORMANCE SUMMARY

Specifications are valid over the full operating temperature range.

Common Characteristics

PARAMETER CONDITIONS MIN TYP MAX UNITS

Supply Input Voltage Range VPWR 3.4 13.9 V

VPWR = VDD33 3.2 3.4 V

V1 to V6 Threshold Accuracy ±1.0 %

V1 to V6 Monitoring Range Precision Range 0.2 1.2 V

Low Range 0.5 3.0 V

Medium Range 1.0 5.8 V

Table 1. Default Thresholds and GPIO Mappings

Vn_THR_LO Vn_THR_HI GPIO1 GPIO2 GPIO3 CMP

Default Thresholds OV ALERT UV

V1 3.2 3.4 Comp_Hi Comp_Hi Comp_Lo Comp_Lo

V2 2.4V 2.6V Comp_Hi Comp_Hi Comp_Lo Comp_Lo

V3 1.7V 1.9V Comp_Hi Comp_Hi Comp_Lo Comp_Lo

V4 1.4V 1.6V Comp_Hi Comp_Hi Comp_Lo Comp_Lo

V5 1.1V 1.3V Comp_Hi Comp_Hi Comp_Lo Comp_Lo

V6 0.95V 1.05V Comp_Hi Comp_Hi Comp_Lo Comp_Lo

Table 2. Default GPI Settings

MANUAL RESET MARGIN UVDISABLE AUX COMP

GPI1 ü

GPI2 ü

The following list contains terms used throughout the

document.

AUXC – Auxiliary Comparator. A GPI pin may be pro-

grammed to this function and map behavior to a GPIO

pin. Nominal VTH = 0.5V.

EEPROM – Non-volatile memory (NVM) storage used to

retain data after power is removed.

Margin – Term used typically in board level testing that

increases/decreases the output voltage to look for sensi-

tivity/marginality problems.

MARG – Ignore margining (OV and UV) when active (low).

A GPI pin may be programmed to this function and map

behavior to a GPIO pin. Nominal VTH = 1.0V.

GLOSSARY OF TERMS

MR – Manual Reset, Active Low. A GPI pin may be pro-

grammed to this function and map behavior to a GPIO pin,

and optionally clear the fault history. Nominal VTH = 1.0V.

NVM – Non-volatile memory, see EEPROM.

OV – Overvoltage, the result of a voltage comparison that

a pin voltage is above a programmable threshold voltage.

Rail – The final output voltage that the LTC2936 supervises.

Supervise – The act of quickly responding (compared to

a fault setting) to a voltage condition that is compared to

pre-programmed values.

UV – Undervoltage, the result of a voltage comparison that

a pin voltage is below a programmable threshold voltage.

UVDIS – UV Disable. Ignore UVs when the pin is low. A

GPI pin may be programmed to this function and map

behavior to a GPIO pin. Nominal VTH = 1.0V.

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DEMO MANUAL DC1605B

THEORY OF OPERATION

GENERAL DESCRIPTION

The LTC2936 is a hex voltage supervisor which detects

an overvoltage or undervoltage and signals the system of

a fault condition. The chip has a dedicated power supply

pin, VPWR, and has an internal 3.3V regulator. The chip

may be powered either by powering VPWR with the on-

board 5V supply, with an external 3.4V to 13.9V supply,

or with an external 3.3V supply by tying VPWR and VDD33

pins together.

THE CHIP

The LTC2936 integrates six voltage supervisors with as-

sociated comparator outputs, two GPIs, and three GPIOs.

The V1-V6 supervisors are comprised of OV/UV window

comparators that can be programmed to map the detec-

tion of a fault to one or more GPIO pin.

In LTpowerPlay, the user programs each voltage supervi-

sor’s range, polarity, mapping, and high and low threshold

voltages.

Each channel’s high/low comparators may be mapped

to any GPIO pin, and any comparator may be mapped to

multiple GPIO pins. Typically the high comparator is used

for the overvoltage condition and the low comparator is

used for the undervoltage condition. The high comparator is

not dedicated as the OV detection nor is the

low comparator

dedicated for UV detection. For example, both comparators

may be configured as OV with the Vn_THR_HI set to indicate

an OV Fault and the Vn_THR_LO set for an OV Warning.

Figure 1. Simplified Block Diagram of Voltage Supervisor Input

GPIO & CMP

MAPPING

(Vn_CONFIG)

HIGH THR

SETTING

LOW THR

SETTING

HIGH

COMPARATOR

LOW

COMPARATOR

LOW FAULT

HIGH FAULT

CMP1–CMP6

GPIO1–CPIO3

GPI1 GPI2 DC1605B F01

GPIO

INPUT OPTIONS

INPUT/INPUT

OUTPUT OPTIONS

OUTPUT/OUTPUT WITH OPEN DRAIN

OUTPUT/OUTPUT WITH PULL-UP

SMBALERT (LATCHED) WITH OPEN DRAIN OR WITH PULL-UP

INTERNAL

LOGIC

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DEMO MANUAL DC1605B

THEORY OF OPERATION

Figure 2. Simplified Block Diagram of the DC1605B

The GPI input pins can be used to override fault conditions

by configuring them as MARG or UVDIS. The active-low

MARG function allows the LTC2936 to ignore OV and UV

conditions. The active-low UVDIS function is a special

case of the MARG function. It allows the device to ignore

UV conditions.

voltages for a total of eleven. Although the ADC updates

at a relatively slow rate, it provides the equivalent of

eleven 4½-digit digital multimeters. Think of the ADC as

a collection of independent voltage readings, whereas the

LTC2936 simply makes a comparison to each of the Vn

input voltages. The simplest demonstration of the DC1605B

is to power and control the board via the DC1613 USB

controller. The controller provides 5V supply and I2C/

SMBus read/write control. This setup provides an easy

quick way to demonstrate the LTC2936’s capabilities.

GPIO

INPUT OPTIONS

MANUAL RESET

MARGIN

UV DISABLE

AUXC (NO PULL-UP)

INTERNAL

LOGIC

LTC2936

6-CH VOLTAGE

SUPERVISOR

WITH EEPROM

VPWR

GPIO1

GPIO2

GPIO3

GPI1

GPI2

BLUE/RED

GREEN

3.3VOUT

INT 5V,

EXT 3.3V,

OR EXT 4V TO 14V

V1-V6, GPI1-2, GPIO1-3

V1-V6

I2C BUS

24-BIT ADC

(LTC2499)

12-BIT ADC

(LTC2637)

POWER

SWITCH

(LTC4415)

5V LDO

(LT1761-5)

POWER JACK

6V TO 14V

GREEN

+5V FROM USB 5V

DC1605B F02

BLUE/RED

TOPSIDE COMPONENT

BOTTOM COMPONENT

COMP (1:6)

VDD33

EXT

INT

THE BOARD

The LTC2936 chip is mounted on the topside of the board

with support ADC and DAC circuitry on the back. The sup-

port circuitry is powered from 5V.

The ADC provides voltage readings for all six voltage

inputs to the LTC2936 and also reads the GPI and GPIO

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DEMO MANUAL DC1605B

THEORY OF OPERATION

may notice some lag in the update rate of the displayed

voltages.

SELECTING A DEVICE ADDRESS

The DC1605B has jumpers (JP7, JP8) labeled ASEL0 and

ASEL1 which allow the user to select one of nine I2C ad-

dresses. See Table 3.

Table 3. Address Selection of LTC2936

I2C ADDRESS (7-BIT)

ASEL1

POSITION

ASEL0

POSITION DEFAULT

0x50 L L •

0x51 L Z

0x52 L H

0x53 Z L

0x54 Z Z

0x55 Z H

0x58 H L

0x59 H Z

0x5A H H

Regardless of the jumper setting, the part will always

respond to the I2C global 7-bit addresses 0x0C and 0x73.

STATUS_WORD REGISTER

The STATUS_WORD register is a read-only register that

provides a summary of fault status on all six HI and LO

comparator outputs, and are determined by the comparator

threshold/configuration settings and Vn voltages. Faults

may be disabled by setting GPI pins to MARG or UVDIS.

RESTORING RAM AND GUI FROM LTC2936

To restore the operating memory (RAM) from the LTC2936

EEPROM contents, click the “R” NVM-to-RAM icon in the

toolbar. To read the RAM registers into the GUI, click the

“R” RAM-to-PC icon in the toolbar.

DC1605B LEDs

The DC1605B board has two green LEDs. When USB power

(DC1613 Controller) or external power (6V to 14V jack) is

applied, the +5V green LED will illuminate. The +5V supply

provides power to the support circuitry, not necessarily to

the LTC2936. Jumper JP9 determines how the LTC2936

The multichannel DAC emulates a 6-channel programmable

power supply that is used to place “rail” voltages at levels

that replicate the user’s system rails. This avoids the need

for the user to wire actual supply rails to the demo board,

however the board was designed to allow this use case.

The DAC output range is 0V to 4V. This is sufficient for

demo purposes. Simply place the V1-V6 jumpers to “INT”

for internal DAC use, and ensure the LTC2936 is powered

by setting JP9 appropriately.

POWERING THE BOARD

The DC1605B board can be powered from the DC1613

USB’s 5V power or from a wall-powered 12V supply

(jack). The LTC2936 hex supervisor can be powered in a

number of different ways. The chip itself is powered from

the on-board 5V supply or an external supply. There is a

table silk-screened onto the board as a reminder. If the

USB power or jack power is present, the +5V LED will

illuminate. The LTC2936 can then be powered by setting

the jumper to “INT .” Alternatively set the jumper to “EXT”

to connect an external power supply voltage to the VPWR

turret. With JP9 set to “EXT,” apply an external 3.3V sup-

ply. If the jumper is removed, apply an external voltage in

the range 3.4V to 13.9V. The board comes pre-configured

with jumpers JP1-JP6 set to the INTERNAL position which

allows the on-board 5V LDO regulator to power all circuits.

NOTE: Turrets V1-V6 are tied directly to the LTC2936

independent of the jumper settings.

The DC1605B uses a multiplexed ADC that is used to

provide voltage readback values. The telemetry plot in

the GUI is similar to a multichannel oscilloscope which is

capable of displaying any parameter that is displayed in

the telemetry window. Due to the nature of a multiplexed

ADC converter, it has an associated ADC loop time. The

total ADC loop time is ~400ms for a given channel. You

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DEMO MANUAL DC1605B

THEORY OF OPERATION

is powered. The default setting of jumper JP9 is set to

internal 5V and the 3.3V OUT LED will illuminate, indicating

the LTC2936 is powered. If this LED is not illuminated,

the LTC2936 is not in a functioning state, the I2C bus will

not communicate with the GUI, and the LTC2936 will be

grayed out in the system tree.

DC1605B ToolWindow and GUI Indicators

The ToolWindow displays the ADC readings on the left and

DAC voltage settings on the right. The blue/red indicators

next to the GPIs and GPIOs display the state (H vs. L) and

voltage reading from the ADC (LT2499). Blue indicates a

logic high and red indicates a logic low. The ToolWindow

is automatically populated when LTpowerPlay detects the

DC1605B demo board when it starts. Note that when you

save a project, the DAC settings are saved in the project file.

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DEMO MANUAL DC1605B

LTpowerPlay GUI SOFTWARE

LTpowerPlay is a powerful Windows-based development

environment that supports Linear Technology power

system management ICs with EEPROM, including the

LTC2936 6-channel voltage supervisor. The software

supports a variety of different tasks. You can use LTpow-

erPlay to evaluate Linear Technology ICs by connecting

to a demo board system. LTpowerPlay can also be used

in an offline mode (with no hardware present) in order to

build a multi-chip configuration file that can be saved and

re-loaded at a later time. LTpowerPlay provides unprec-

edented system level diagnostic and debug features. It

becomes a valuable diagnostic tool during board bring-up

to program or tweak the power management scheme in

a system or to diagnose power issues when bringing up

rails. LTpowerPlay utilizes the DC1613 I2C/SMBus/PMBus

controller to communicate with one of many potential tar-

gets, including the DC1605B demo system or a customer

board. The software also provides an automatic update

feature to keep the software current with the latest set

of device drivers and documentation. The LTpowerPlay

software can be downloaded from:

http://www.linear.com/ltpowerplay

To access technical support documents for LT C power

system management products visit “Help, View Online

Help” on the L

TpowerPlay menu.

Figure 3. Screenshot of the LTpowerPlay GUI

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DEMO MANUAL DC1605B

QUICK START PROCEDURE

The following procedure describes how to set up a DC1605B

demo system.

1. Download and install the LTpowerPlay GUI: www.linear.

com/ltpowerplay

2. Remove the board from the ESD protective bag and

place it on a level surface. Connect the DC1613 I2C/

SMBus/PMBus controller to the DC1605B board using

the 12-pin ribbon cable.

3. Plug the USB-to-I2C/SMBus/PMBus Controller into a

USB port on your PC. The board should power up with

+5V and +3.3VOUT LEDs illuminated green. The GPIO

and CMP LEDs will illuminate blue.

Figure 4. Connecting DC1605B Board and the DC1613 USB to I2C/SMBus/PMBus Controller

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DEMO MANUAL DC1605B

QUICK START PROCEDURE

4. Launch the LTpowerPlay GUI.

a. The GUI automatically identifies the DC1605B and

builds a system tree for each I2C device. The system

tree on the left hand side will look like this:

b. A green message box will be displayed momentarily

in the lower left hand corner confirming that the

DC1605B is communicating. The board at this point

is fully operational.

5. Load the Demo Configuration.

In the upper left hand corner of the GUI, select File >

Initialize DC1605B Demo > Demo Config (or Factory

Defaults). This will load the configuration settings into

the working RAM of the LTC2936, set the DAC outputs,

clear the status registers, and store the settings into

NVM (EEPROM). The ‘Demo Config’ file is the starting

point for the use cases. The ‘Factory Defaults’ file sets

the Vn thresholds that accommodate the initial powerup

state of the DAC outputs (2.048V).

SAVING A CONFIGURATION

You can make changes to the LTC2936 register values

and DAC settings. Save the demo board configuration to

a (*.proj) file by clicking the "Save" icon. This creates a

backup file. Name it whatever you like. Note that the DAC

settings are saved in the project file.

QUICK START VIDEO

There is a Quick Start Video that covers the basic features

of the LTC2936 chip and DC1605B demo board. The video

can be accessed via LTpowerPlay by navigating to the Help

menu > DC1605B Content.

LOADING A DC1605B CONFIGURATION (*.proj) FILE

WITH THE GUI

1. In the upper left hand corner of the GUI, File > Open

> browse to your *.proj file. This will load the file into

the GUI.

2. Click on the “Go Online” icon, then click on the “PC →

RAM” icon to write all registers. This loads the configu-

ration into the working RAM of the LTC2936. The DAC

settings are stored and retrieved from the .proj file.

3. To store the configuration to NVM (EEPROM), click on

the “RAM → NVM” icon

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DEMO MANUAL DC1605B

DC1605B DETAILS – TOP SIDE

Table 2. Default Jumper Configuration

REFERENCE

DESIGNATOR SIGNAL NAME USAGE DEFAULT

JP1 – JP6 V1 – V6 Selects internal vs external voltage INT

JP7, JP8 ASEL1, ASEL0 Selects H/Z/L for LTC2936 slave address L

JP9 VPWR Selects internal 5V, external 3.3V, or remove to apply 3.4V to 14V turret. INT

Figure 5. DC1605B Top Side Details

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DEMO MANUAL DC1605B

DEMO BOARD USE CASES

USE CASE #1

A common configuration for the LTC2936 dedicates the

V1 pin to the highest supply in the system and uses V2-V6

to monitor other voltages. The V1 pin provides power to

the chip and also is used to detect an OV or UV on the V1

pin. For simplicity, the USB controller (DC1613) powers

the board and the LTC2936 is powered via the V1 pin with

the jumper set to INT 5V.

Each of the high comparator fault outputs is mapped to

GPIO1, indicating an active-low OV fault. Each of the low

comparator fault outputs are mapped to GPIO3, indicating

an active-low UV fault. These OV and UV conditions are

indicated in multiple places—LEDs next to the GPIO tur-

rets and also in the GUI. The GPIO2 pin has been mapped

as an active-low latched OV indicator. The latched ALERT

is cleared by pressing the GPI1 pushbutton. The GPIO

pins have a red-blue LED which is red when low and blue

when high.

The two GPI inputs are used to detect a manual reset

(MR) and margin disable (MARG) and activated when the

pushbutton switches are depressed.

GPIO1 → OV fault

GPIO2 → ALERT (latched)

GPIO3 → UV fault

GPI1 → MR (manual reset)

GPI2 → MARG (ignore OV/UV when margining)

Let’s margin V5 and V6 low by typing a value of 1V and

0.9V into the respective DAC control boxes. You may also

move the DAC output by clicking the up/down arrows on

the individual DAC box or by double-clicking the DAC value

and entering a new value in the box. V5 and V6 will report

a UV, turning the LED on GPIO3 red. The dashboard in the

GUI indicates the V5 and V6 voltages are below the LO

thresholds of 0.95V and 1.1V. Also notice in the Telemetry

window a STATUS_WORD register, expand it. This register

is a live indicator of LO or HI fault conditions. Note the state

of LO_FAULT bits when the margin low button is selected.

We can demonstrate the effect of the GPI2 pushbutton at

this point. The GPI2 pin has been programmed to function

as MARG, enabling the LTC2936 to ignore all UV condi-

tions. Notice that when the pushbutton is depressed, GPIO3

returns high (blue). This is useful when the system does

not want to be informed of a UV condition during margin

low testing. Moving the DAC voltages back to 1.2V and

1V returns GPIO3 to a high state (blue), indicating there

is no UV condition.

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DEMO MANUAL DC1605B

DEMO BOARD USE CASES

Let’s margin V5 and V6 high by typing a value of 1.4V and

1.1V into the respective DAC control boxes. V5 and V6

will report an OV in the GUI and on the demo board. Both

GPIO1 and GPIO2 LEDs will turn red and the dashboard

indicates an OV condition and a latched ALERT. Note the

state of HI_FAULT bits in the STATUS_WORD register.

When the GPI2 button is pushed, the GPIO1 (OV) LED is

returned to blue and the STATUS_WORD reflects the MARG

pin as well, clearing the HI_FAULT bits. We can now change

the DACs back to 1.2V and 1.0V. The OV condition is no

longer present, however ALERT (GPIO2) remains latched

low. Since the GPI1 pin is defined as a Manual Reset,

pressing this button clears the latched ALERT, turning

GPIO2 LED blue which indicates a de-asserted high state. Apply an external supply voltage to the turret. A sensor

or other moderate source impedance voltage may be

supervised on the Vn inputs. A battery voltage may be

supervised since the LTC2936 supply current is < 700µA.

For example, a +5V external supply may be connected to

turret V1. Notice the

GPIO1 and GPIO2 LEDs turn red, indi-

cating OV and ALERT are asserted low. The V2 thresholds

need to be changed. Enter 5.5V and 4.5V for the HI and LO

threshold settings. The GPIO1 will return high and the LED

will change to blue but the GPIO2 remains low (red) since

it indicates a latched ALERT. Press the MR pushbutton on

GPI1 to release GPIO2 back high (LED blue).

USE CASE #2

The DC1605B demo board can be configured to supervise

external supply voltages. Inputs V1-V6 may be used for

this purpose. Simply move the jumper from INT to EXT

which disconnects the backside DAC, allowing an external

voltage to be applied to the LTC2936. Please ensure the

maximum ratings on the turrets are not exceeded, most

of which are 6V.

The GPI inputs may also be used to monitor external

voltages. These pins can be configured as an auxiliary

comparator (AUXC). In this mode, the GPI pin voltage is

compared to an internal 0.5V reference. Typically an external

voltage divider is provided to obtain the appropriate trip

point for the external voltage. The GPI comparators can

be mapped to one of the GPIOs to alert the system of an

overvoltage or undervoltage condition.

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DEMO MANUAL DC1605B

DEMO BOARD USE CASES

USE CASE #3

Another common configuration is one that uses a GPIO

pin to drive a system reset. The LTC2936 data sheet shows

this feature throughout. The other two GPIOs are config-

ured as previously shown, OV and ALERT. Additionally a

manual reset pushbutton (GPI1) asserts the system reset.

GPIO1 → RST (system reset)

GPIO2 → OV

GPIO3 → ALERT

GPI1 → MR pushbutton

LTC2936 SYSTEM

V1 V2 V3 V4 V5 V6

GPIO1

GPIO2

GPIO3

SDA

SCL

GPI2

GPI1

RST

ALERT

MARG

1. To program GPIO1 to system reset function, first

uncheck the hi_comp mapping of all V1-V6 channels

to GPIO1.

2. Configure GPI1 as a Manual Reset. Map GPI1 to GPIO1.

3. Configure GPIO1 as active-low with weak pull-up. To

update the changes made in steps 1-3, click the Write

All Registers (PC → RAM) icon.

4. You can optionally extend the low time of the system

reset by changing the delay-on-release setting to ensure

a clean release of reset. This provides a time-based

debounce of the switch.

When configured in this way, GPIO1 provides a system reset

for the host processor and GPI1 can drive a system reset

(GPIO1) with a push of a button. You may set the GPIO1

delay-on-release time to 410 ms to experience the extended

reset firsthand. The UV condition indicator remains on

GPIO3. The OV condition is indicated as a latched ALERT

on GPIO2. When GPI1 pushbutton is pressed, a system

reset is asserted on GPIO1 and the ALERT is released if

the OV condition is removed.

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DEMO MANUAL DC1605B

DC1605B DETAILS – TOP

TEST POINT

TURRETS FOR

V1 –V6

TEST POINT

TURRETS FOR

GPO1–3

V1 –V6

JUMPERS

I2C TURRETS TO DC1613

6V TO 14V

POWER JACK

TURRET AND LED

INDICATING 5V POWER

FOR DC1605B

CMP1-6

HEADER

TEST POINT TURRETS FOR GPI1–2 SIGNALS GPI PUSHBUTTON

SWITCHES

SLAVE ADDRESS

JUMPERS

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DEMO MANUAL DC1605B

DC1605B DETAILS – BOTTOM

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DEMO MANUAL DC1605B

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 1 U1 IC PROG HEX VOLT SUPERVISOR EEPROM SSOP-24 LINEAR: LTC2936CGN#PBF

Additional Demo Board Circuit Components

2 16 C1, C2, C3, C4, C5, C6, C8, C9, C10, C11,

C12, C13, C14, C19, C27, C34

CAP CER 10nF 25V 10% X7R 0603 MURATA: GRM188R71E103KA01D

3 8 C7, C15, C16, C17, C18, C26, C28, C33 CAP CER 100nF 16V 10% X7R 0603 MURATA: GRM188R71C104KA01D

4 3 C20, C21, C25 CAP CER 1µF 16V 10% X7R 0603 MURATA: GRM188R71C105KA12D

5 1 C22 CAP CER 22µF 25V 10% X5R 1210 MURATA: GRM32ER61E226KE15L

6 2 C23, C24 CAP CER 10µF 16V 10% X5R 0805 MURATA: GRM21BR61C106KE15L

7 3 LED1-LED3, LED6-LED11 LED-DUAL-COLOR BLUE-RED SS SMD KINGBRIGHT: APHB1608QBDSURKC

8 2 LED4, LED5 LED GREEN SS TYPE BRIGHT SMD PANASONIC-SSG: LNJ326W83RA

9 9 Q1-Q9 DUAL N-CHANNEL FET2N7002DWA DIODES INC.: 2N7002DWA-7

10 6 R1-R6 RES ARRAY 10k/20k 0.1W 0.1% 25ppm 0606 SMD VISHAY: ACASN1002S2002AT

11 10 R7, R10, R25, R27, R48, R67, R70, R73,

R76

RES 3k 0.1W 5% 0603 SMD VISHAY: CRCW06033K0OJNEA

12 12 R8, R11, R26, R28, R30, R46, R58, R59,

R68, R71, R74, R77

RES 1k 0.1W 5% 0603 SMD VISHAY: CRCW06031K0OJNEA

13 14 R9, R12, R13, R14, R41, R42, R44, R55,

R56, R57, R69, R72, R75, R78

RES 10k 0.1W 1% 0603 SMD VISHAY: CRCW060310K0FKEA

14 2 R15, R16 RES 402k 0.1W 1% 0603 SMD VISHAY: CRCW0603402KFKEA

15 5 R17, R18, R61, R63, R65 RES 200k 0.1W 1% 0603 SMD VISHAY: CRCW0603200KFKEA

16 3 R19, R20, R21 RES 604k 0.1W 1% 0603 SMD VISHAY: CRCW0603604KFKEA

17 6 R22, R23, R24, R62, R64, R66 RES 100k 0.1W 1% 0603 SMD VISHAY: CRCW0603100KFKEA

18 0 R31, R32, R33, R49, R51, R53

(OPTIONAL)

RES 0Ω 0.1W 1% 0603 SMD

19 8 R34, R35, R36, R37, R38, R50, R52, R54 RES 0Ω 0.1W 1% 0603 SMD VISHAY: CRCW060366K5FKEA

20 2 R39, R40 0Ω RESISTOR ARRAY, 4 RES, 1206 PANASONIC: EXB-38VR000V

21 1 R43 RES 49.9k 0.1W 1% 0603 SMD VISHAY: CRCW060349K9FKEA

22 1 R45 RES 249 Ω 0.1W 1% 0603 SMD VISHAY: CRCW0603249RFKEA

23 1 R47 RES 9.31k 0.1W 1% 0603 SMD VISHAY: CRCW06039K31FKEA

24 1 R60 RES 1.50k 0.1W 1% 0603 SMD VISHAY: CRCW06031K50JNEA

25 1 U2 IC ADC 24-BIT DELTA SIGMA 16-CH WITH I2C LINEAR: LTC2499CUHF#PBF

26 1 U3 IC OP AMP DUAL MICROPOWER LINEAR: LTC6078CMS8

27 1 U4 IC DAC 12-BIT OCTAL WITH I2C LINEAR: LTC2637CMS-HMX12

28 1 U5 IC VREF SERIES PRECISION REFERENCE LINEAR: LT6654AMPS6-4.096

29 1 U6 FIXED 5V 100mA MICROPOWER LDO LINEAR: LT1761ES5-5#PBF

30 1 U7 2K-BIT I2C SERIAL EEPROM MICROCHIP: 24AA02T-I/OT

31 1 U8 DUAL 4A IDEAL DIODES WITH ADJ CURR LMT LINEAR: LTC4415IMSE#PBF

Hardware: For Demo Board Only

32 1 J1 CONN HEADER 12POS 2mm STR DL PCB FCI: 98414-G06-12ULF

33 1 J2 CONN PWR JACK 2.1mm × 5.5mm HIGH CUR CUI INC.: PJ-002AH

34 6 JP1-JP6, JP9 2mm PIN HEADER 1×3 SULLINS: NRPN031PAEN-RC

35 1 JP7, JP8 2mm PIN HEADER 1×4 SULLINS: NRPN041PAEN-RC

36 1 JP10 0.100" PIN HEADER 1×6 SULLINS: PRPC006SAAN-RC

37 4 MH1-MH4 SPACER STACKING #4 SCREW NYLON KEYSTONE: 8831

38 2 SW1, SW2 BLK SWITCH TACTILE SPST-NO 0.05A 12V C&K: PTS635SL25SMTR LFS

39 19 TP1-TP19 TERM SOLDER TURRET .219"H .109"L MILL MAX:: 2501-2-00-80-00-00-07-0

40 1 TP20 TERM SOLDER TURRET .156"H .084"L MILL MAX: 2308-2-00-80-00-00-07-0

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DEMO MANUAL DC1605B

SCHEMATIC DIAGRAM

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DEMO MANUAL DC1605B

SCHEMATIC DIAGRAM

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DEMO MANUAL DC1605B

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-

tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.

SCHEMATIC DIAGRAM

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DEMO MANUAL DC1605B

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com

 LINEAR TECHNOLOGY CORPORATION 2014

LT 1014 • PRINTED IN USA

DEMONSTRATION BOARD IMPORTANT NOTICE

Linear Technology Corporation (LT C ) provides the enclosed product(s) under the following AS IS conditions:

This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT

OR EVALUATION PURPOSES ONLY and is not provided by LT C for commercial use. As such, the DEMO BOARD herein may not be complete

in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety

measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union

directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.

If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date

of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU

OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS

FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR

ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LT C from all claims

arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all

appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or

agency certified (FCC, UL, CE, etc.).

No License is granted under any patent right or other intellectual property whatsoever. LT C assumes no liability for applications assistance,

customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.

LT C currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.

Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and

observe good laboratory practice standards. Common sense is encouraged.

This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LT C applica-

tion engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035