AP4320BK6TR-G1 - DIODES INC

AP4320

Document number: DS36786 Rev. 2 - 2

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December 2013

AP4320

A Product Line of

Diodes Incorporated

CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER

Description

The AP4320 is a highly integrated solution for a constant

voltage/constant current mode SMPS application.

The AP4320 contains one 2.5V voltage reference and two operational

amplifiers. The 2.5V voltage reference, combined with one

operational amplifier, makes of an ideal voltage controller for use in

adapters and battery chargers. The low voltage reference, combined

with another operational amplifier, makes of an ideal current limiter for

output low side current sensing.

The AP4320 is available in SOT26 package.

Features

 Constant Voltage and Constant Current Control

 Low External Component Count

 Easy Compensation

 Low Supply Current: 190A

 Precision Internal Voltage Reference: 2.5V

 Operating Supply Voltage: 3.5V to 36V

 Low Current Sense Threshold: 30mV/50mV

 Totally Lead-free & Fully RoHS Compliant (Note 1 & 2)

 Halogen and Antimony Free. “Green” Device (Note 3)

Pin Assignments

(Top View)

1

2

3 4

5

Pin 1 Mark

6

VSENSE

GND

VCTRL ICTRL

VOUT

VCC

SOT26 (K6 Package)

Applications

 AC/DC Adapters

 Battery Chargers

 LED Drivers

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

Typical Applications Circuit

VCC

VOUT

GND

VSENSE

ICTRL

RSS

R4

To

primary R2

R1

VOUT+

VOUT-

Load

C1

R3

C3

R5

R6

VCTRL

AP4320

++

IL

2.5V

C2

(Optional)

OP1

OP2

1

2

3

4

5

6

Typical Application 1

121RRR

VV REFOUT





SS

SENSE

R

V

itCurrentLim 

AP4320

Document number: DS36786 Rev. 2 - 2

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December 2013

AP4320

A Product Line of

Diodes Incorporated

Typical Applications Circuit (Cont.)

Typical Application 2

Typical Application 3

VCC

VOUT

GND

VSENSE

ICTRL

RSS

R4

To

primary R2

R1

VOUT+

VOUT-

Load

C1

R3

C3

R5

R6

VCTRL

AP4320

++

IL

2.5V

C2

(Optional)

OP1

OP2

1

2

3

4

5

6

)(

121

)]([ SSLSSLREF

UT

ORI

RRR

RIVV 





SS

SENSE

R

V

itCurrentLim 

VCC

VOUT

GND

VSENSE

ICTRL

RSS

R4

To

primary R2

R1

VOUT+

VOUT-

Load

C1

R3

C3

R5

R6

VCTRL

AP4320

++

IL

2.5V

C2

(Optional)

OP2

OP1

1

2

3

4

5

6

)(

121 SSLREFOUT RI

RRR

VV 





 

SSREFSENSE

REFSENSE RVV VV

itCurrentLim 





AP4320

Document number: DS36786 Rev. 2 - 2

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December 2013

AP4320

A Product Line of

Diodes Incorporated

Pin Descriptions

Pin Number

Pin Name

Function

1

VSENSE

Input pin of the current control loop

2

GND

Ground

3

VCTRL

Input pin of the voltage control loop

4

ICTRL

Input pin of the current control loop

5

VOUT

Output pin. Sinking current only

6

VCC

Power Supply

Functional Block Diagram

41

2

3

6

VCC

VOUT

VCTRL

5

GND

VSENSE

ICTRL

2.5V

OP1

OP2

AP4320

Document number: DS36786 Rev. 2 - 2

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December 2013

AP4320

A Product Line of

Diodes Incorporated

Absolute Maximum Ratings (Note 4)

Symbol

Parameter

Rating

Unit

VCC

Power Supply Voltage

-0.3 to 38

V

VOUT

Input Voltage (VOUT Pin)

-0.3 to VCC

V

VICTRL

Input Voltage (ICTRL Pin)

-0.3 to 18

V

VSENSE

Input Voltage (VSENSE Pin)

-0.3 to 18

V

VVCTRL

Input Voltage (VCTRL Pin)

-0.3 to 18

V

TJ

Junction Temperature

+150

C

TSTG

Storage Temperature

-55 to +150

C

TLEAD

Lead Temperature (Soldering, 5sec)

+260

C

θJA

Thermal Resistance (Junction to Ambient)

250

C/W

Note 4: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied.

Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.

Recommended Operating Conditions

Symbol

Parameter

Min

Max

Unit

VCC

Power Supply Voltage

3.5

36

V

AP4320

Document number: DS36786 Rev. 2 - 2

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AP4320

A Product Line of

Diodes Incorporated

Electrical Characteristics (@VCC=20V, -25C <TA<+125C, unless otherwise specified.)

Symbol

Parameters

Conditions

Min

Typ

Max

Unit

TOTAL CURRENT CONSUMPTION

ICC

Total Supply Current Not Including the

Output Sinking Current

VICTRL=VSENSE=0V, VOUT=Open

–

190

–

μA

VOLTAGE CONTROL LOOP

Gmv

Transconduction Gain (VCTRL). Sink

Current Only

–

1

3.5

–

mA/mV

VREF

Voltage Control Loop Reference

TA=+25oC

2.488

2.50

2.512

V

–

2.48

–

2.52

IIBV

Input Bias Current (VCTRL)

–

25

–

nA

CURRENT CONTROL LOOP

Gmi

Transconduction Gain (ICTRL). Sink

Current Only

–

1.5

7

–

mA/mV

VSENSE

Current Control Loop Reference

AP4320A

TA = +25°C

29

30

31

mV

–

28

30

32

AP4320B

TA = +25°C

48.5

50

51.5

–

46

50

54

IIBI

Current Out of Pin ICTRL at VSENSE

AP4320A

VICTRL=-30mV

–

16

–

μA

AP4320B

VICTRL=-50mV

–

16

–

OUTPUT STAGE

VOL

Low Output Voltage at 2mA

Sinking Current

–

30

100

mV

IOS

Output Short Circuit Current.

Sink Current Only

VOUT=4V

–

30

–

mA

AP4320

Document number: DS36786 Rev. 2 - 2

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AP4320

A Product Line of

Diodes Incorporated

Performance Characteristics

VREF vs. Ambient Temperature ICC vs. Ambient Temperature

VSENSE vs. Ambient Temperature VSENSE vs. Ambient Temperature

IIBV vs. Ambient Temperature IIBI vs. Ambient Temperature

-40 -20 0 20 40 60 80 100 120 140

2.480

2.485

2.490

2.495

2.500

2.505

2.510

2.515

2.520

VREF (V)

Ambient Temperature (oC)

-40 -20 0 20 40 60 80 100 120 140

150

160

170

180

190

200

210

220

230

240

ICC (A)

Ambient Temperature (oC)

-40 -20 0 20 40 60 80 100 120 140

29.0

29.2

29.4

29.6

29.8

30.0

30.2

30.4

30.6

30.8

31.0

VSENSE (mV)

Ambient Temperature (oC)

AP4320A

-40 -20 0 20 40 60 80 100 120 140

48.0

48.5

49.0

49.5

50.0

50.5

51.0

51.5

52.0

VSENSE (mV)

Ambient Temperature (oC)

AP4320B

-40 -20 0 20 40 60 80 100 120 140

0

5

10

15

20

25

30

35

40

45

50

IIBV (nA)

Ambient Temperature (oC)

-40 -20 0 20 40 60 80 100 120 140

8

10

12

14

16

18

20

22

IIBI (A)

Ambient Temperature (oC)

AP4320

Document number: DS36786 Rev. 2 - 2

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AP4320

A Product Line of

Diodes Incorporated

Performance Characteristics (Cont.)

IOS_OP1 vs. Ambient Temperature IOS_OP2 vs. Ambient Temperature

Gmv vs. Ambient Temperature Gmi vs. Ambient Temperature

VOL vs. Ambient Temperature

-40 -20 0 20 40 60 80 100 120 140

20

25

30

35

40

45

50

IOS_OP1 (mA)

Ambient Temperature (oC)

-40 -20 0 20 40 60 80 100 120 140

20

25

30

35

40

45

50

IOS_OP2 (mA)

Ambient Temperature (oC)

-40 -20 0 20 40 60 80 100 120 140

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

Gmv (mA/mV)

Ambient Temperature (oC)

-40 -20 0 20 40 60 80 100 120 140

2

3

4

5

6

7

8

9

10

Gmi (mA/mV)

Ambient Temperature (oC)

-40 -20 0 20 40 60 80 100 120 140

18

20

22

24

26

28

30

32

34

36

VOL (mV)

Ambient Temperature (oC)

AP4320

Document number: DS36786 Rev. 2 - 2

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AP4320

A Product Line of

Diodes Incorporated

Ordering Information

AP4320 X XX XX - XX

PackingVersion

TR : Tape & Reel

A: 30mV VSENSE G1 : Green

Product Name RoHS/GreenPackage

K6 : SOT26

B: 50mV VSENSE

Diodes IC’s Pb-free products with "G1" suffix in the part number, are RoHS compliant and green.

Package

Version

Part Number

Marking ID

Packing

SOT26

30mV VSENSE

AP4320AK6TR-G1

GJZ

3000/Tape and Reel

50mV VSENSE

AP4320BK6TR-G1

GKW

Marking Information

: Logo

XXX: Marking ID (See details from ordering information)

AP4320

Document number: DS36786 Rev. 2 - 2

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AP4320

A Product Line of

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Package Outline Dimensions (All dimensions in mm(inch).)

(1) Package Type: SOT26

2.820(0.111)

3.100(0.122)

2.650(0.104)

3.000(0.118)

1.500(0.059)

1.700(0.067)

0.950(0.037)TYP

1.800(0.071)

2.000(0.079)

0.300(0.012)

0.500(0.020)

0.700(0.028)REF

0.100(0.004)

0.200(0.008)

0°

8°

0.200(0.008)

0.300(0.012)

0.600(0.024)

0.000(0.000)

0.150(0.006)

0.900(0.035)

1.300(0.051) 1.450(0.057)

MAX

1 2 3

4

5

6

Pin 1 Mark

AP4320

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AP4320

A Product Line of

Diodes Incorporated

Suggested Pad Layout

(1) Package Type: SOT26

E E

GZ

Y

X

Dimensions

Z

(mm)/(inch)

G

(mm)/(inch)

X

(mm)/(inch)

Y

(mm)/(inch)

E

(mm)/(inch)

Value

3.600/0.142

1.600/0.063

0.700/0.028

1.000/0.039

0.950/0.037

AP4320

Document number: DS36786 Rev. 2 - 2

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AP4320

A Product Line of

Diodes Incorporated

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 ANY 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, nor 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.

This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the

final and determinative format released by Diodes Incorporated.

LIFE SUPPORT

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 is 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 life 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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