2017 Microchip Technology Inc. DS20005588A-page 1
HV9961
Features
• Fast Average Current Control
• Programmable Constant Off-time Switching
• Linear Dimming Input
• PWM Dimming Input
• Output Short-circuit Protection with Skip Mode
• –40°C to +125°C Ambient Operating
Temperature
• Pin-compatible with HV9910B
Applications
• DC/DC or AC/DC LED Driver Applications
• LED Backlight Driver for LCD Displays
• General Purpose Constant-current Source
• LED Signage and Displays
• Architectural and Decorative LED Lighting
• LED Street Lighting
General Description
The HV9961 is an Average-Current mode
constant-current control LED driver IC operating in a
constant Off-time mode. Unlike the HV9910B, this
control IC does not produce a peak-to-average error.
This greatly improves accuracy as well as the line and
load regulations of the LED current without any need
for loop compensation or high-side current sensing. Its
output LED current accuracy is ±3%.
The IC is equipped with a current limit comparator for
Hiccup mode output short-circuit protection.
The HV9961 can be powered from an 8V–450V supply.
It has a PWM dimming input that accepts an external
control TTL-compatible signal. In addition, the output
current can be programmed by an internal 275 mV
reference or controlled externally through a 0V–1.5V
linear dimming input.
The HV9961 is pin-to-pin compatible with HV9910B,
and it can be used as a drop-in replacement for many
applications to improve LED current accuracy and
regulation.
Package Type
16-lead SOIC
(Top view)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
8
7
6
5
1
2
3
4
VIN
CS
GND
GATE
RT
LD
VDD
PWMD
VIN
NC
NC
CS
GND
NC
NC
GATE
NC
NC
RT
LD
VDD
NC
NC
PWMD
8-lead SOIC
(Top view)
See Table 2-1 for pin information.
s
LED Driver with Average-Current Mode Constant-Current Control
HV9961
DS20005588A-page 2 2017 Microchip Technology Inc.
Functional Block Diagram
CS
R
S
Q
Q
T
OFF
Timer
L/E
Blanking
GATE
0.44V
MIN (V
LD
• 0.185, 0.275V)
LD
400µs
PWMD
RT
GND
Current
Mirror
i
Regulator
VIN VDD
UVLO
POR
0.15/0.20V
Average Current
Control Logic
OUT
Auto-REF
HV9961
CLK
IN
Hiccup
2017 Microchip Technology Inc. DS20005588A-page 3
HV9961
Typical Application Circuit
1
4
2
8
5
6
7
3
HV9961
VIN
GATEPWMD
LD
VDD
RT
CS
GND
LED
Load
Sets
LED
Current
8V–450V
RCS
RT
HV9961
DS20005588A-page 4 2017 Microchip Technology Inc.
1.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings†
VIN to GND ............................................................................................................................................ –0.5V to +470V
VDD to GND ............................................................................................................................................................ +12V
CS, LD, PWMD, Gate, RT to GND.................................................................................................... –0.3V to VDD+0.3V
Junction Temperature, TJ .................................................................................................................... –40°C to +150°C
Storage Temperature, TS ..................................................................................................................... –65°C to +150°C
Continuous Power Dissipation (TA = +25°C):
8-lead SOIC ............................................................................................................................................ 650 mW
16-lead SOIC ........................................................................................................................................ 1000 mW
† Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. This is a stress rating only, and functional operation of the device at those or any other conditions above those
indicated in the operational sections of this specification is not intended. Exposure to maximum rating conditions for
extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
Electrical Specifications: TA = 25°C, VIN = 12V, VLD = VDD, and VPWMD = VDD unless otherwise specified.
Parameter Sym. Min. Typ. Max. Unit Conditions
INPUT
Input DC Supply Voltage Range VINDC 8 — 450 VDC input voltage
(Note 1 and Note 2)
Shutdown Mode Supply Current IINSD —0.5 1mA Pin PWMD connected to
GND (Note 2)
INTERNAL REGULATOR
Internally Regulated Voltage VDD 7.25 7.5 7.75 VVIN = 8V, IDD(EXT) = 0 mA,
500 pF at gate, RT = 226 k
Line Regulation of VDD VDD, line 0 — 1 V
VIN = 8V–450V,
IDD(EXT) = 0 mA,
500 pF at gate, RT = 226 k
Load Regulation of VDD VDD, load 0 — 100 mV IDD(EXT) = 0 mA–1 mA,
500 pF at gate, RT = 226 k
VDD Undervoltage Lockout Upper
Threshold VUVLO 6.45 6.7 6.95 V VIN rising (Note 2)
VDD Undervoltage Lockout
Hysteresis VUVLO —500 —mV VIN falling
Maximum Input Current
(Limited by UVLO) IIN, MAX
3.5 — — mA VIN = 8V, TA = 25°C (Note 3)
1.5 — — VIN = 8V, TA = 125°C (Note 3)
PWM DIMMING
PWMD Input Low Voltage VPWMD(LO) — — 0.8 V VIN = 8V–450V (Note 2)
PWMD Input High Voltage VPWMD(HI) 2.2 — — V VIN = 8V–450V (Note 2)
PWMD Pull-down Resistance RPWMD 50 100 150 kVPWMD = 5V
AVERAGE-CURRENT SENSE LOGIC
Current Sense Reference Voltage VCST 268 275 286 mV VLD = 1.5V
LD-to-CS Voltage Ratio AV(LD) 0.182 0.185 0.188 — VLD = 1.2V
LD-to-CS Voltage Offset AV x VLD(OFFSET) 0 — 10 mV Offset = VCS– AV(LD) x VLD,
VLD = 1.2V
Note 1: Also limited by package power dissipation limit, whichever is lower
2: Denotes specifications which apply over the full operating ambient temperature range of
–40°C < TA < +125°C
3: Specification is obtained by characterization and is not 100% tested.
2017 Microchip Technology Inc. DS20005588A-page 5
HV9961
CS Threshold Temperature
Regulation VCST(TEMP) — — 5 mV (Note 2)
LD Input Shutdown Threshold
Voltage VLD(OFF) —150 —mV VLD falling
LD Input Enable Threshold Voltage VLD(EN) —200 —mV VLD rising
Current Sense Blanking Interval TBLANK 150 —320 ns (Note 2)
Minimum On-time TON(MIN) — — 1000 ns VCS = VCST + 30 mV
Maximum Steady-state Duty Cycle DMAX 75 — — %
Reduction in output LED
current may occur beyond
this duty cycle
SHORT-CIRCUIT PROTECTION
Hiccup Threshold Voltage VCSH 410 440 470 mV
Current Limit Delay CS-to-Gate TDELAY — — 150 ns VCS = VCSH + 30 mV
Short-circuit Hiccup Time THICCUP 350 400 550 s
Minimum On-time (Short-circuit) TON(MIN),SC — — 430 ns VCS = VDD
TOFF TIMER
Off-time TOFF
32 40 48 sRT = 1 M
810 12 RT = 226 k
GATE DRIVER
Gate Sourcing Current ISOURCE 0.165 — — A VGATE = 0V, VDD = 7.5V
Gate Sinking Current ISINK 0.165 — — A VGATE = VDD, VDD = 7.5V
Gate Output Rise Time tr—30 50 ns CGATE = 500 pF, VDD = 7.5V
Gate Output Fall Time tf—30 50 ns CGATE = 500 pF, VDD = 7.5V
TEMPERATURE SPECIFICATIONS
Parameter Sym. Min. Typ. Max. Unit Conditions
TEMPERATURE RANGES
Operating Ambient Temperature TA–40 —+125 °C
Maximum Junction Temperature TJ(MAX) — — +150 °C
Storage Temperature TS–65 —+150 °C
PACKAGE THERMAL RESISTANCE
8-lead SOIC JA —101 —°C/W
16-lead SOIC JA —83 —°C/W
ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Specifications: TA = 25°C, VIN = 12V, VLD = VDD, and VPWMD = VDD unless otherwise specified.
Parameter Sym. Min. Typ. Max. Unit Conditions
Note 1: Also limited by package power dissipation limit, whichever is lower
2: Denotes specifications which apply over the full operating ambient temperature range of
–40°C < TA < +125°C
3: Specification is obtained by characterization and is not 100% tested.
HV9961
DS20005588A-page 6 2017 Microchip Technology Inc.
2.0 PIN DESCRIPTION
The details on the pins of HV9961 are listed on
Table 2-1. Refer to Package Types for the location of
pins.
TABLE 2-1: PIN FUNCTION TABLE
Pin Number
Pin Name Description
8-lead SOIC 16-lead SOIC
1 1 VIN This pin is the input of an 8V–450V linear regulator.
2 4 CS This pin is the current sense pin used to sense the FET current with
an external sense resistor.
3 5 GND Ground return for all internal circuitry. This pin must be electrically
connected to the ground of the power train.
4 8 Gate This pin is the output of gate driver for driving an external N-chan-
nel power MOSFET.
5 9 PWMD
This is the PWM dimming input of the IC. When this pin is pulled to
GND, the gate driver is turned off. When the pin is pulled high, the
gate driver operates normally.
612 VDD
This is the power supply pin for all internal circuits. It must be
bypassed with a low ESR capacitor to GND (at least 0.1 F).
713 LD
This pin is the linear dimming input, and it sets the current sense
threshold as long as the voltage at this pin is less than 1.5V. If volt-
age at LD falls below 150 mV, the gate output is disabled. The gate
signal recovers at 200 mV at LD.
814 RT A resistor connected between this pin and GND programs the gate
off-time.
—2, 3, 6, 7, 10,
11, 15 and16 NC No connection
2017 Microchip Technology Inc. DS20005588A-page 7
HV9961
3.0 APPLICATION INFORMATION
3.1 General Description
Peak current control (as in HV9910B) is the simplest
and the most economical way to regulate a buck
converter's output current. However, it suffers accuracy
and regulation problems that arise from
peak-to-average current error, contributed by the
current ripple in the output inductor and the
propagation delay in the current sense comparator.
The full inductor current signal is unavailable for direct
switch current sensing across the sense resistor at the
ground path in this low-side switch buck converter
when the control switch is at the ground potential
because the switch is turned off. While it is very simple
to detect the peak current in the switch, controlling the
average inductor current is usually implemented by
level translating the sense signal from +VIN. Although
this is practical for a relatively low-input voltage, VIN,
this type of average-current control may become
excessively complex and expensive in the offline AC or
other high-voltage DC applications.
The HV9961 uses a proprietary control scheme that
allows fast and accurate control of the average current
in the buck inductor by sensing the switch current only.
No compensation of the current control loop is
required. The output LED current’s response to PWMD
input is similar to that of the HV9910B. The effect of
inductor current ripple amplitude on this control
scheme is insignificant. Therefore, the LED current is
independent of the variation in inductance, switching
frequency or output voltage. Constant off-time control
of the buck converter is used for stability and improving
the LED current regulation over a wide range of input
voltages. Unlike HV9910B, the HV9961 does not
support Constant Frequency mode.
3.2 Off Timer
The timing resistor connected between RT and GND
determines the off-time of the gate driver. Wiring this
resistor between RT and Gate as with HV9910B is no
longer supported. Refer to Equation 3-1 for the
computation of the gate output’s off-time.
EQUATION 3-1:
TOFF sRTk
25
-------------------0.3+=
within the range of 30 k RT 1 M
3.3 Average-Current Control
Feedback and Output Short-circuit
Protection
The current through the switching Metal-oxide
Semiconductor Field-effect Transistor (MOSFET)
source is averaged and used to give constant-current
feedback. This current is detected with a sense resistor
at the CS pin. The feedback operates in a fast
Open-loop mode. No compensation is required. Output
current is programmed as seen in Equation 3-2.
EQUATION 3-2:
ILED
0.275V
RCS
-----------------
=
When the voltage at the LD input VLD 1.5V
If the voltage at the LD input is less than 1.5V, the
output current is computed as specified in
Equation 3-3.
EQUATION 3-3:
ILED
VLD 0.185
RCS
------------------------------
=
When the voltage at the LD input 0.2V VLD < 1.5V
The above equations are only valid for continuous
conduction of the output inductor. It is good design
practice to choose the inductance of the inductor such
that the peak-to-peak inductor current is 30% to 40% of
the average DC full-load current. Hence, the
recommended inductance can be calculated as shown
in Equation 3-4.
EQUATION 3-4:
LO
VOMAX
TOFF
0.4 IO
-----------------------------------------
=
The duty-cycle range of the current control feedback is
limited to D 0.75. A reduction in the LED current may
occur when the desired LED string voltage VO is
greater than 75% of the input voltage VIN of the
HV9961 LED driver.
Reducing the targeted output LED string voltage VO
below VO(MIN) = VIN x DMIN, where DMIN = 1 µs/(TOFF
+1 µs), may also result in the loss of regulation of the
LED current. This condition, however, causes an
increase in the LED current and can potentially trip the
short-circuit protection comparator.
The typical output characteristic of the HV9961 LED
driver is shown in Figure 3-1. The corresponding
HV9910B characteristic is given for the comparison.
HV9961
DS20005588A-page 8 2017 Microchip Technology Inc.
FIGURE 3-1: Typical Output
Characteristic of an HV9961 LED Driver.
V
IN
= 170VDC
HV9961
HV9910B
0 10 20 30 40 50 60
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
LED Current (A)
Output Voltage (V)
Output Characteristics
The short-circuit protection comparator trips when the
voltage at CS exceeds 0.44V. When this occurs, the
short-circuit gate off-time THICCUP = 400 µs is
generated to prevent the staircasing of the inductor
current and, potentially, its saturation due to insufficient
output voltage. The typical short-circuit inductor current
is shown in the waveform of Figure 3-2.
400µs
0.44V/R
CS
FIGURE 3-2: Short-circuit Inductor
Current.
A leading-edge blanking delay is provided at CS to
prevent false triggering of the current feedback and the
short-circuit protection.
3.4 Linear Dimming
When the voltage at LD falls below 1.5V, the internal
275 mV reference to the constant-current feedback
becomes overridden by VLD x 0.185. As long as the
current in the inductor remains continuous, the LED
current is given by Equation 3-3. However, when VLD
falls below 150 mV, the gate output becomes disabled.
The gate signal recovers when VLD exceeds 200 mV. It
is required in some applications to use the same
brightness control signal input to shut off the lamp. The
typical linear dimming response is shown in Figure 3-3.
FIGURE 3-3:
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
LED Current (A)
LD (V)
LD Response Characteristics
Typical Linear Dimming
Response of an HV9961 LED Driver.
The linear dimming input could also be used for
“mixed-mode” dimming to expand the dimming ratio. In
such case, a pulse-width modulated signal with an
amplitude below 1.5V should be applied to LD.
3.5 Input Voltage Regulator
The HV9961 can be powered directly from an
8 VDC–450 VDC supply through its VIN input. When this
voltage is applied at the VIN pin, the HV9961 maintains
a constant 7.5V level at VDD. This voltage can be used
to power the IC and external circuitry connected to VDD
within the rated maximum current or within the thermal
ratings of the package, whichever limit is lower. The
VDD pin must be bypassed by a low ESR capacitor to
provide a low-impedance path for the high-frequency
current of the gate output. The HV9961 can also be
powered through the VDD pin directly with a voltage
greater than the internally regulated 7.5V, but less than
12V.
Despite the instantaneous voltage rating of 450V,
continuous voltage at VIN is limited by the power
dissipation in the package. For example, when HV9961
draws IIN = 2.5 mA from the VIN input, and the 8-pin
SOIC package is used, the maximum continuous
voltage at VIN is limited to the value shown in
Equation 3-5.
EQUATION 3-5:
VIN MAX
TJMAX
TA
–
RJAIIN
--------------------------------
=
396V=
Where:
Ambient temperature: TA = 25°C
Maximum working junction temperature: TJ(MAX) = 125°C
Junction-to-ambient thermal resistance:
R,JA = 101°C/W
2017 Microchip Technology Inc. DS20005588A-page 9
HV9961
In such cases, when it is needed to operate the
HV9961 from a higher voltage, a resistor or a Zener
diode can be added in series with the VIN input to divert
some of the power loss from the HV9961. In the above
example, using a 100V Zener diode will allow the circuit
to work up to 490V. The input current drawn from the
VIN pin is represented by Equation 3-6.
EQUATION 3-6:
IIN 1mA QGfS
+
Where:
fS = Switching frequency
QG = Gate charge of the external FET (obtained from
the manufacturer’s data sheet)
3.6 Gate Output
The gate output of the HV9961 is used to drive an
external MOSFET. It is recommended that the gate
charge QG of the external MOSFET be less than 25 nC
for switching frequencies 100 kHz and less than
15 nC for switching frequencies >100 kHz.
3.7 PWM Dimming
Due to the fast open-loop response of the
average-current control loop of the HV9961, its PWM
dimming performance nearly matches that of the
HV9910B. The inductor current waveform comparison
is shown in Figure 3-4.
CH4 = Inductor Current
CH3 = Inductor Current
of HV9910B
for comparison
CH2 = VPWMD
FIGURE 3-4: Typical PWM Dimming
Response of an HV9961 LED Driver.
The rising and falling edges are limited by the current
slew rate in the inductor. The first switching cycle is
terminated upon reaching the 275 mV or VLD x 0.185
level at CS. The circuit is further reaching its
steady-state within 3–4 switching cycles regardless of
the switching frequency.
HV9961
DS20005588A-page 10 2017 Microchip Technology Inc.
4.0 PACKAGING INFORMATION
4.1 Package Marking Information
Legend: XX...X Product Code or Customer-specific information
Y Year code (last digit of calendar year)
YY Year code (last 2 digits of calendar year)
WW Week code (week of January 1 is week ‘01’)
NNN Alphanumeric traceability code
Pb-free JEDEC® designator for Matte Tin (Sn)
*This package is Pb-free. The Pb-free JEDEC designator ( )
can be found on the outer packaging for this package.
Note: In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for product code or customer-specific information. Package may or
not include the corporate logo.
3
e
3
e
8-lead SOIC Example
NNN
XXXXXXXX
YYWW
e3
888
HV9961LG
1725
e3
16-lead SOIC
XXXXXXXXX
YYWWNNN
Example
HV9961NG
1714789
e3 e3
Note: For the most current package drawings, see the Microchip Packaging Specification at www.microchip.com/packaging.
2017 Microchip Technology Inc. DS20005588A-page 11
HV9961
Note: For the most current package drawings, see the Microchip Packaging Specification at www.microchip.com/packaging.Note: For the most current package drawings, see the Microchip Packaging Specification at www.microchip.com/packaging.
HV9961
DS20005588A-page 12 2017 Microchip Technology Inc.
2017 Microchip Technology Inc. DS20005588A-page 13
HV9961
APPENDIX A: REVISION HISTORY
Revision A (November 2017)
• Converted Supertex Doc# DSFP-HV9961 to
Microchip DS20005588A
• Changed the package marking format
• Changed the packaging quantity of the LG pack-
age from 2500/Reel to 3300/Reel
• Changed the packaging quantity of the NG M901
media type from 1000/Reel to 2600/Reel
• Changed the packaging quantity of the NG M934
media type from 2500/Reel to 2600/Reel
• Made minor text changes throughout the docu-
ment
HV9961
DS20005588A-page 14 2017 Microchip Technology Inc.
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, contact your local Microchip representative or sales office.
Examples:
a) HV9961LG-G: LED Driver with Average-
Current Mode Constant-
Current Control, 8-lead
SOIC, 3300/Reel
b) HV9961NG-G: LED Driver with Average-
Current Mode Constant-
Current Control, 16-lead
SOIC, 45/Tube
c) HV9961NG-G-M901: LED Driver with Average-
Current Mode Constant-
Current Control, 16-lead
SOIC, 2600/Reel
d) HV9961NG-G-M934: LED Driver with Average-
Current Mode Constant-
Current Control, 16-lead
SOIC, 2600/Reel
PART NO.
Device
Device: HV9961 = LED Driver with Average-Current Mode
Constant-Current Control
Packages: LG = 8-lead SOIC
NG = 16-lead SOIC
Environmental: G = Lead (Pb)-free/RoHS-compliant Package
Media Types: (blank) = 3300/Reel for an LG Package
(blank) = 45/Tube for an NG Package
M901 = 2600/Reel for an NG Package
M934 = 2600/Reel for an NG Package
Note: For Media Types M901 and M934, the base quantity for tape and reel
was standardized to 2600/reel. Both options will result in the delivery of
the same number of parts/reel.
XX
Package
-
X - X
Environmental
Media Type
Options
2017 Microchip Technology Inc. DS20005588A-page 15
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights unless otherwise stated.
Trademarks
The Microchip name and logo, the Microchip logo, AnyRate, AVR,
AVR logo, AVR Freaks, BeaconThings, BitCloud, CryptoMemory,
CryptoRF, dsPIC, FlashFlex, flexPWR, Heldo, JukeBlox, KEELOQ,
KEELOQ logo, Kleer, LANCheck, LINK MD, maXStylus,
maXTouch, MediaLB, megaAVR, MOST, MOST logo, MPLAB,
OptoLyzer, PIC, picoPower, PICSTART, PIC32 logo, Prochip
Designer, QTouch, RightTouch, SAM-BA, SpyNIC, SST, SST
Logo, SuperFlash, tinyAVR, UNI/O, and XMEGA are registered
trademarks of Microchip Technology Incorporated in the U.S.A.
and other countries.
ClockWorks, The Embedded Control Solutions Company,
EtherSynch, Hyper Speed Control, HyperLight Load, IntelliMOS,
mTouch, Precision Edge, and Quiet-Wire are registered
trademarks of Microchip Technology Incorporated in the U.S.A.
Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any
Capacitor, AnyIn, AnyOut, BodyCom, chipKIT, chipKIT logo,
CodeGuard, CryptoAuthentication, CryptoCompanion,
CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average
Matching, DAM, ECAN, EtherGREEN, In-Circuit Serial
Programming, ICSP, Inter-Chip Connectivity, JitterBlocker,
KleerNet, KleerNet logo, Mindi, MiWi, motorBench, MPASM, MPF,
MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach,
Omniscient Code Generation, PICDEM, PICDEM.net, PICkit,
PICtail, PureSilicon, QMatrix, RightTouch logo, REAL ICE, Ripple
Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI,
SuperSwitcher, SuperSwitcher II, Total Endurance, TSHARC,
USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and
ZENA are trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated in
the U.S.A.
Silicon Storage Technology is a registered trademark of Microchip
Technology Inc. in other countries.
GestIC is a registered trademark of Microchip Technology
Germany II GmbH & Co. KG, a subsidiary of Microchip Technology
Inc., in other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2017, Microchip Technology Incorporated, All Rights Reserved.
ISBN: 978-1-5224-2317-1
Note the following details of the code protection feature on Microchip devices:
• Microchip products meet the specification contained in their particular Microchip Data Sheet.
• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
• Microchip is willing to work with the customer who is concerned about the integrity of their code.
• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Microchip received ISO/TS-16949:2009 certification for its worldwide
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and manufacture of development systems is ISO 9001:2000 certified.
QUALITYMANAGEMENTS
YSTEM
CERTIFIEDBYDNV
== ISO/TS16949==
DS20005588A-page 16 2017 Microchip Technology Inc.
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Fax: 774-760-0088
Chicago
Itasca, IL
Tel: 630-285-0071
Fax: 630-285-0075
Dallas
Addison, TX
Tel: 972-818-7423
Fax: 972-818-2924
Detroit
Novi, MI
Tel: 248-848-4000
Houston, TX
Tel: 281-894-5983
Indianapolis
Noblesville, IN
Tel: 317-773-8323
Fax: 317-773-5453
Tel: 317-536-2380
Los Angeles
Mission Viejo, CA
Tel: 949-462-9523
Fax: 949-462-9608
Tel: 951-273-7800
Raleigh, NC
Tel: 919-844-7510
New York, NY
Tel: 631-435-6000
San Jose, CA
Tel: 408-735-9110
Tel: 408-436-4270
Canada - Toronto
Tel: 905-695-1980
Fax: 905-695-2078
ASIA/PACIFIC
Australia - Sydney
Tel: 61-2-9868-6733
China - Beijing
Tel: 86-10-8569-7000
China - Chengdu
Tel: 86-28-8665-5511
China - Chongqing
Tel: 86-23-8980-9588
China - Dongguan
Tel: 86-769-8702-9880
China - Guangzhou
Tel: 86-20-8755-8029
China - Hangzhou
Tel: 86-571-8792-8115
China - Hong Kong SAR
Tel: 852-2943-5100
China - Nanjing
Tel: 86-25-8473-2460
China - Qingdao
Tel: 86-532-8502-7355
China - Shanghai
Tel: 86-21-3326-8000
China - Shenyang
Tel: 86-24-2334-2829
China - Shenzhen
Tel: 86-755-8864-2200
China - Suzhou
Tel: 86-186-6233-1526
China - Wuhan
Tel: 86-27-5980-5300
China - Xian
Tel: 86-29-8833-7252
China - Xiamen
Tel: 86-592-2388138
China - Zhuhai
Tel: 86-756-3210040
ASIA/PACIFIC
India - Bangalore
Tel: 91-80-3090-4444
India - New Delhi
Tel: 91-11-4160-8631
India - Pune
Tel: 91-20-4121-0141
Japan - Osaka
Tel: 81-6-6152-7160
Japan - Tokyo
Tel: 81-3-6880- 3770
Korea - Daegu
Tel: 82-53-744-4301
Korea - Seoul
Tel: 82-2-554-7200
Malaysia - Kuala Lumpur
Tel: 60-3-7651-7906
Malaysia - Penang
Tel: 60-4-227-8870
Philippines - Manila
Tel: 63-2-634-9065
Singapore
Tel: 65-6334-8870
Taiwan - Hsin Chu
Tel: 886-3-577-8366
Taiwan - Kaohsiung
Tel: 886-7-213-7830
Taiwan - Taipei
Tel: 886-2-2508-8600
Thailand - Bangkok
Tel: 66-2-694-1351
Vietnam - Ho Chi Minh
Tel: 84-28-5448-2100
EUROPE
Austria - Wels
Tel: 43-7242-2244-39
Fax: 43-7242-2244-393
Denmark - Copenhagen
Tel: 45-4450-2828
Fax: 45-4485-2829
Finland - Espoo
Tel: 358-9-4520-820
France - Paris
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
Germany - Garching
Tel: 49-8931-9700
Germany - Haan
Tel: 49-2129-3766400
Germany - Heilbronn
Tel: 49-7131-67-3636
Germany - Karlsruhe
Tel: 49-721-625370
Germany - Munich
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Germany - Rosenheim
Tel: 49-8031-354-560
Israel - Ra’anana
Tel: 972-9-744-7705
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Italy - Padova
Tel: 39-049-7625286
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Norway - Trondheim
Tel: 47-7289-7561
Poland - Warsaw
Tel: 48-22-3325737
Romania - Bucharest
Tel: 40-21-407-87-50
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
Sweden - Gothenberg
Tel: 46-31-704-60-40
Sweden - Stockholm
Tel: 46-8-5090-4654
UK - Wokingham
Tel: 44-118-921-5800
Fax: 44-118-921-5820
Worldwide Sales and Service
10/25/17