AP34063S8G-13 - DIODES INC.

AP34063

UNIVERSAL DC/DC CONVERTER

AP34063 Rev. 5 1 of 11 JULY 2009

DS31004 www.diodes.com © Diodes Incorporated

• Operation from 3.0V to 40V Input

• Low Standby Current

• Current Limiting

• Output Switch Current to 1.6A

• Output Voltage Adjustable

• Frequency Operation to 100 kHz

• Precision 2% Reference

• Lead Free packages: SOP-8L and PDIP-8L (Note 1)

• SOP-8L: Available in “Green” Molding Compound

(No Br, Sb)

• Lead Free Finish/RoHS Compliant (Note 2)

The AP34063 Series is a monolithic control circuit containing the

primary functions required for DC-to-DC converters. These

devices consist of an internal temperature compensated

reference, comparator, controlled duty cycle oscillator with an

active current limit circuit, driver and high current output switch.

This series is specifically designed for incorporating in

Step-Down and Step-Up and Voltage-Inverting applications with

a minimum number of external components.

Application Circuit

(1) Step-Up Converter

1.25V

Ref

Reg

Ipk CT

R

SQ Q2

Q1

Comp.

+

_

8

7

6

5

1

2

3

4

VCC

Osc

180

+470

uF

Vin

12V

Rsc

0.24

R1 10k 56k

R2

+CO

28V/200mA

Vout

+100

Vout

Optional Filter

L

120uH

CT

680

pF

B240

470uF

1.0uH

Test Conditions Results

Line Regulation Vin = 9V to 12V, IO = 200mA 20mV = ±0.035%

Load Regulation Vin = 12V, IO = 50mA to 200mA 15mV = ±0.035%

Output Ripple Vin = 12V, IO = 200mA 500mVPP

Efficiency Vin = 12V, IO = 200mA 80%

Features Description

AP34063

UNIVERSAL DC/DC CONVERTER

AP34063 Rev. 5 2 of 11 JULY 2009

DS31004 www.diodes.com © Diodes Incorporated

Application Circuit (Continued)

(2) Step-Down Converter

1.25V

Ref

Reg

Ipk

CT

R

SQ Q2

Q1

Comp.

+

_

8

7

6

5

1

2

3

4

VC

C

Osc

+

470

uF

Vin

25V

Rsc

0.11

R1 25k 36k

R2

+

CO

5.0V/500mA

Vout

+

100

Vout

Optional Filter

CT

470

pF

L100uH

B240

470uF

1.0uH

Test Conditions Results

Line Regulation Vin = 12V to 24V, IO = 500mA 20mV = ±0.2%

Load Regulation Vin = 24V, IO = 50mA to 500mA 5mV = ±0.05%

Output Ripple Vin = 24V, IO = 500mA 160mVPP

Efficiency Vin = 24V, IO = 500mA 82%

AP34063

UNIVERSAL DC/DC CONVERTER

AP34063 Rev. 5 3 of 11 JULY 2009

DS31004 www.diodes.com © Diodes Incorporated

Application Circuit (Continued)

(3) Voltage Inverting Converter

1.25V

Ref

Reg

Ipk CT

R

SQ Q2

Q1

Comp.

+

_

8

7

6

5

1

2

3

4

VC

C

Osc

+

470uF

Vin

4.5V to 6.0V

Rsc

0.26

R2 50k 3k

R1

CO

-12V/100mA

Vout

100

Vout

Optional Filter

680

pF

L

B240

470uF

1.0uH

+

100

uH

+ +

Test Conditions Results

Line Regulation Vin = 4.5V to 6.0V, IO = 100mA 20mV = ±0.08%

Load Regulation Vin = 5.0V, IO = 20mA to 100mA 30mV = ±0.12%

Output Ripple Vin = 5.0V, IO = 100mA 500mVPP

Efficiency Vin = 5.0V, IO = 100mA 60%

AP34063

UNIVERSAL DC/DC CONVERTER

AP34063 Rev. 5 4 of 11 JULY 2009

DS31004 www.diodes.com © Diodes Incorporated

Lead-free

Package Packing

Lead Free

L : Lead Free (Note 1)

S8 : SOP-8L

N8 : PDIP-8L G : Green U : Tube

13 : Tape & Reel

AP 34063 XX X - X

Device Package

Code Packaging

(Not e 3)

Tube 13” Tape and Reel

Quantity Part Number

Suffix Quantity Part Number

Suffix

AP34063S8L-13 S8 SOP-8L NA NA 2500/Tape & Reel -13

AP34063S8G-13 S8 SOP-8L NA NA 2500/Tape & Reel -13

AP34063N8L-U N8 PDIP-8L 60 - U NA NA

Notes: 1. PDIP-8L is available in “Lead Free” product only.

2. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions app lied. Please visit our website at

http://www.diodes.com/products/lead_free.html.

3. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at

http://www.diodes.com/datasheets/ap02001.pdf.

(1) SOP-8L (2) PDIP-8L

1

2

3

4

8

7

6

5

VCC

Comparator

Inverting

Input

Driver

Collector

Ipk

Sense

Switch

Collector

Switch

Emitter

Timing

Capacitor

Gnd

( Top View )

1

2

3

4

8

7

6

5

VCC

Comparator

Inverting

Input

Driver

Collector

Ipk

Sense

Switch

Collector

Switch

Emitter

Timing

Capacitor

Gnd

( Top View )

Ordering Information

Pin Assignment

AP34063

UNIVERSAL DC/DC CONVERTER

AP34063 Rev. 5 5 of 11 JULY 2009

DS31004 www.diodes.com © Diodes Incorporated

Maximum Ratings

Symbol Parameter Value Unit

VCC Power Supply Voltage 40 V

VIR Comparator Input Volta

g

e Ran

g

e -0.3 ~ +40 V

VC

(

switch

)

Switch Collector Voltage 40 V

VE

(

switch

)

Switch Emitter Voltage (VPin 1 = 40V) 40 V

VCE

(

switch

)

Switch Collector to Emitter Volta

g

e40 V

VC

(

driver

)

Driver Collector Voltage 40 V

IC

(

driver

)

Drive r Collector Cu rrent 100 mA

ISW Switch Current 1.6 A

PD Power Dissipation and Thermal

Characteristics

SOP: TA = 25°C 600 mW

PDIP: TA = 25°C 1.25 W

θJA Thermal Resistance 160 °C/W

TMJ Maximum Junction Temperature +150 °C

TOP Operating Junction Temperature Range 0 ~ +105 °C

Tstg Storage Temperature Range -65 ~ +150 °C

Notes: 4. Maximum package power dissipa tion limits must be observed.

5. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.

Electrical Characteristics (VCC = 5.0V, unless otherwise specified)

Symbol Characteristics Min Typ. Max Unit

OSCILLATOR

fosc Frequency (VPin 5 = 0V, CT = 1.0nF, TA = 25°C) 24 33 42 kHz

Ichg Charge Current (VCC = 5.0V to 40V, TA = 25°C) 24 30 42 µA

Idischg Discharge Current (VCC = 5.0V to 40V, TA = 25°C) 140 200 260 µA

Idischg / Ichg Discharge to Charge Current Ratio (Pin 7 to VCC, TA = 25°C) 5.2 6.5 7.5 -

Vipk (sense) Current Limit Sense Voltage (Ich

g

= Idisch

g

, TA = 25°C) 300 400 450 mV

OUTPUT SWITCH (Note 3)

VCE (sat) Saturation Voltage, Darlington Connection

(I

SW = 1.0A, Pi ns 1,8 connected) - 1.0 1.3 V

VCE (sat) Saturation Voltage, Darlington Connection

(I

SW = 1.0A, ID = 50mA, Forced ß ≈ 20 ) - 0.45 0.7 V

hFE DC Current Gain (ISW = 1.0A, VCE = 5.0V, TA = 25°C) 50 75 - -

IC (off) Collector Off-State Current (VCE = 40V) - 0.01 100 µA

COMPARATOR

Vth Threshold Voltage

TA = 25°C

TA = 0oC ~ 70 oC

- - - V

- 1.225 1.25 1.275 -

- 1.21 - 1.29 -

Regline Threshold Voltage Line Regulation (VCC = 3.0V to 40V) - 1.4 6.0 mV

TOTAL DEVICE

ICC Supply Current (VCC = 5.0V to 40V, CT =1.0 nF, Pin 7 = VCC, VPin

5 > Vth Pin 2 = Gnd, remaining pins open) - - 3.5 mA

AP34063

UNIVERSAL DC/DC CONVERTER

AP34063 Rev. 5 6 of 11 JULY 2009

DS31004 www.diodes.com © Diodes Incorporated

1.25V

Reference

Regulator

Ipk

Oscillator CT

R

SQ Q2

Q1

100

Comparator

+

_

(Bottom View)

8

7

6

5

1

2

3

4Gnd

Timing

Capacitor

Switch

Emitter

Switch

Collector

Drive

Collector

I

pk

Sense

V

CC

Comparator

Inverting

Input

Representative Schematic Diagram

AP34063

UNIVERSAL DC/DC CONVERTER

AP34063 Rev. 5 7 of 11 JULY 2009

DS31004 www.diodes.com © Diodes Incorporated

Typical Performance Characteristics

Figure 1. Vce(sat) versus le

0.6

0.8

1

1.2

1.4

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6

Ie, Emitter Current (A)

Vce(sat ) , Saturat ion Voltag e (V)

1.24

1.245

1.25

1.255

1.26

0 102030405060708090100

Temp erature (oC)

Reference V oltage (V)

Figure 2. Referen ce Volt ag e ve rsus Temp.

Figure 4. Standby Supply Current

versus Supply Voltage

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

0 5 10 15 20 25 30 35 40

Vcc, Supply Voltage (V)

Icc, Supply Current (mA)

1.4

1.45

1.5

1.55

1.6

1.65

1.7

1.75

1.8

100 300 500 700 900 1100 1300 1500

IE(mA)

VCE (sat), (V)

Figure 5. Emitter Follower Configuration

Output Saturation Voltage vs. Emitter Current

0.1

1

10

100

1000

0.01 0.1 1 10

CT, Oscillat or Ti ming Capa c itor (nF)

ton-off, Output Switch On-Off Time(us)

Figure 6.Output Switch On-Off Time versus

Oscillator Timing Capacitor

VCC = 5.0V

Pin 7 = VCC

Pin 5 = GND

TA = 25oCton

toff

Vcc=2~10V

Pin1,7,8=Vcc

Pin3,5=GND

TA=25oC

Pin2=5

Figure 3. Current Limit Sense Voltage

versus Temperatu re

320

340

360

380

400

420

440

0 102030405060708090100

Temperature (oC)

Current Sense Voltage (mV)

≤10W

AP34063

UNIVERSAL DC/DC CONVERTER

AP34063 Rev. 5 8 of 11 JULY 2009

Design Formula Table

Calculation Step-Up Step-Down Voltage-Inverting

ton / toff Vout + VF -Vin (min) v

out + vF Ivout l + v F

V

in (min) - Vsat v

in(min) - vsat - vout V

in - vsat

( ton + toff ) 1/f 1/f 1/f

toff

ton + toff t

on + toff t

on + toff

ton +1 ton +1 ton +1

toff t

off t

off

ton ( ton +toff ) - toff ( ton +toff ) - toff ( ton + toff ) - toff

CT 4.0×10-5

t

on 4.0×10-5

t

on 4.0×10-5

t

on

Ipk (switch) 2Iout (max) (ton / toff +1) 2Iout (max) 2Iout ( max) (ton / toff +1)

Rsc 0.3 / Ipk (switch) 0.3 / Ipk (switch) 0.3 / Ipk (switch)

L (min)

( Vin (min) – Vsat ) ton (max) ( Vin (min) – Vsat -Vout )ton (max) ( Vin (min ) – Vsat ) ton (max)

Ipk (switch) I

pk (switch) I

pk (switch)

CO 9

Iout ton I

pk (switch) ( toff + ton ) 9 Iout ton

Vripple (pp) 8Vripple (pp) V

ripple (pp)

Vsat = Saturation voltage of the out put switch.

VF = Forward voltage drop of the outpu t rectifier.

The following power supply characteristics must be chosen:

Vin - Nominal input voltage.

Vout - Desired output voltage, |Vout| = 1.25 (1+R2/R1)

Iout - Desired output current.

fmin - Minimum desired output switching frequency at the selected values of Vin and Io.

Vripple(pp) - Desired peak-to-peak output ripple voltage. In practice, the calculated capacitor value will need to be increased due to its

equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly affect the

line and load regulation.

AP34063

UNIVERSAL DC/DC CONVERTER

AP34063 Rev. 5 9 of 11 JULY 2009

Marking Information

(1) SOP-8L ( Top View )

AP34063

YY WW

XX

Logo

Part No.Internal code

Year : "08" = 2008

"09" = 2009

Xth week = 01~52

~

5

8

41

G : Green

L : Lead Free

(2) PDIP-8L

( Top View )

AP34063

YY WW

XX

Logo

Part No.Internal code

Year : "08" = 2008

"09" = 2009

Xth week = 01~52

~

5

8

41

L : Lead Free

AP34063

UNIVERSAL DC/DC CONVERTER

AP34063 Rev. 5 10 of 11 JULY 2009

Package Information (All Dimensions in mm)

(1) SOP-8L

1.27typ 0.3/0.5

7°~9°

4.85/4.95

3.85/3.95

5.90/6.10

0.15/0.25

7°~9°

0.62/0.82

0.10/0.20

Gauge Plane

0.254

Seating Plane

0.35max. 45°

Detail "A"

1.30/1.50

1.75max.

Land Pattern Recommendation

(Unit: mm)

6x-1.27

8x-1.55

8x-0.60

5.4

0°/8°

(2) PDIP-8L

AP34063

UNIVERSAL DC/DC CONVERTER

AP34063 Rev. 5 11 of 11 JULY 2009

IMPORTANT NOTICE

DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS

DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF A NY JURISDICTION).

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other

changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability

arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any

license under its patent or trademark rights, no r the rights of others. Any Customer or user of this document or products described

herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies

whose products are represented on Diodes Incorporated website, harmless against all damages.

Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized

sales channel.

Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall

indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees

arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.

Products described herein may be covered by one or more United States, international or foreign patents pending. Product names

and markings noted herein may also be covered by one or more United States, international or foreign trademarks.

LIFE SUPPOR T

Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without

the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:

A. Life support devices or systems are devices or systems which:

1. are intended to implant into the body, or

2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided

in the labeling can be reasonably expected to result in significant injury to the user.

B. A critical component i s any component in a life support device or system whose failure to perform can be reasonably expected

to cause the failure of the life support device or to affect its safety or effectiveness.

Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their l ife support devices or

systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements

concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems,

notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further,

Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes

Incorporated products in such safety-critical, life support devices or systems.

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