Datasheet AP3772AK6TR-G1, AP3772BK6TR-G1, AP3772CK6TR-G1 Datasheet (BCD) [ru]

Low-Power Off-line Primary Side Regulation Controller AP3772

Advance Datasheet

General Description

The AP3772 is a high performance AC/DC power
supply controller for battery charger and adapter
applications. The device uses Pulse Frequency
Modulation (PFM) method to build discontinuous
conduction mode (DCM) flyback power supplies.

The AP3772 provides accurate constant voltage,
constant current (CV/CC) regulation without
requiring an opto-coupler and the secondary control
circuitry. It also eliminates the need of loop
compensation circuitry while maintaining good
stability. The AP3772 can achieve excellent
regulation and high average efficiency, yet meets
no-load consumption less than 30mW. It can also
achieve excellent dynamic performance while
maintaining 30mW standby power with AP4340.

The AP3772 has a built-in fixed cable voltage drop
compensation function. The magnitude of the cable
compensation voltage is set as 6%, 3% and 0 of the
rated output voltage respectively to meet various
cables with different length and gauge. It also has an
adjustable built-in line compensation function to
achieve tight CC.

The AP3772 is available in SOT-23-6 package.

Features

• Primary Side Control for Tight Constant Current
and Constant Voltage

• 30mW No-load Input Power

• Excellent Dynamic Performance with AP4340

• Bipolar Junction Transistor (BJT) Driving

• Proprietary Adjustable Line Compensation for
CC Variation

• Constant and Built-in 6%, 3% and No Cable
Voltage Drop Compensation

• Enhanced Audio Noise Suppression

• Open Circuit Protection

• Over Voltage Protection

• Short Circuit Protection

• SOT-23-6 package

Applications

• Adapters/Chargers for Cell/cordless Phones,
PDAs, MP3 and Other Portable Devices

• LED Driver

• Standby and Auxiliary Power Supplies

Figure 1. Package Type of AP3772

SOT-23-6

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Advance Datasheet

Low-Power Off-line Primary Side Regulation Controller AP3772

Pin Configuration

K6 Package

(SOT-23-6)

Pin 1 Mark

1

2

34

Figure 2. Pin Configuration of AP3772 (Top View)

6

5

Pin Description

Pin Number Pin Name Function

The OUT pin is used to turn on and turn off the power switch. When
turning on the power switch, the OUT pin will output 30mA source

1 OUT

2 GND

3 VCC

4 CS

5 CPC

6 FB

current to support the base current of the power BJT. When turning
off the power switch, the resistance between the OUT and GND will
become to 5Ω
The GND pin is the ground of the IC. When the power BJT is turned
off, a fast reverse sinking current to the gate of BJT will flow out
from this pin. Attention should be paid to in the PCB layout
The VCC pin supplies the power for the IC. In order to get the
correct operation of the IC, a capacitor with low ESR should be
placed as close as possible to the VCC pin
The CS is the current sense pin of the IC. The IC will turn off the
power BJT according to the voltage on the CS pin. When the power
BJT is on, a current is output from the CS pin which is proportional
to the line voltage to realize the function of line compensation
A capacitor more than 10nF should be connected to this pin. The
voltage of CPC pin is linear to load of the system and it is used for
the functions of cable voltage drop compensation and audio noise
suppression
The CV and CC regulation are realized based on the voltage
sampling of this pin

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Advance Datasheet

Low-Power Off-line Primary Side Regulation Controller AP3772

Functional Block Diagram

VCC

3

FB

UVLO

6

0.1V

COMP

PFM

OVP

&

OCKP

Tonsec

Detector

PRO

T

ONS

Regulator

&

Bias

UVLO

CS

V

FB

Line

Compensation

4

T

ONS

Dynamic

Response

Constant Voltage

EA

V

REF1

V

REF2

Constant Current

Control

Control

Peak Current

Control & LEB

Audio noise

Suppression

Cable

Compensation

Q

R

S

Shutdown

Pre_Shutdown

Q

R

S

CV_
CC_

CC

Pro

Dyn

ctrl
ctrl

_ctrl

PFM

Driver

1

OUT

2

GND

5

CPC

Figure 3. Functional Block Diagram of AP3772

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Advance Datasheet

Low-Power Off-line Primary Side Regulation Controller AP3772

Ordering Information

AP3772 -

Circuit Type

G1: Green

Cable Compensation Voltage
A: 6%
B: 3%
C: 0

Package
K6: SOT-23-6

TR: Tape & Reel

Package

SOT-23-6

BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and green.

Temperature

Range

-40 to 85°C

Cable

Compensation

Voltage

6% AP3772AK6TR-G1 GKA Tape & Reel
3% AP3772BK6TR-G1 GKB Tape & Reel

0 AP3772CK6TR-G1 GKC Tape & Reel

Part Number Marking ID Packing Type

Absolute Maximum Ratings (Note 1)

Parameter Symbol Value Unit

Supply Voltage VCC -0.3 to 30 V
CS, CPC to GND -0.3 to 7 V
FB Input Voltage VFB -40 to 10 V
Source Current at OUT Pin I
Operating Junction Temperature TJ 150 ºC
Storage Temperature T

Lead Temperature (Soldering, 10
sec)
Thermal Resistance (Junction to
Ambient)

 Internally Limited A

SOURCE

-65 to 150 ºC

STG

T

300 ºC

LEAD

θ

JA

200 ºC/W

Note 1: 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.

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Advance Datasheet

Low-Power Off-line Primary Side Regulation Controller AP3772

Electrical Characteristics

V

=15V, TA=25°C, unless otherwise specified.

CC

Parameter Symbol Conditions Min Typ Max Unit

UVLO SECTION

Startup Threshold VTH (ST) 13 15.5 18
Minimal Operating Voltage V

(MIN) 3 3.5 6.5

OPR

STANDBY CURRENT SECTION
Startup Current IST

V

CC=VTH

Before startup

(ST)-1V,

0 0.2 0.6

Operating Current ICC(OPR) Static current 250 500 600
DRIVE OUTPUT SECTION

Output Current

Sink I
Source I

Maximum Off Time t

Apply 1V @OUT pin 150 330 500 mA

SINK

24 30 40 mA

SOURCE

(MAX) 18 ms

OFF

CURRENT SENSE SECTION
Current Sense Threshold

Voltage at Heavy Load
Leading Edge Blanking t

500 525 550 mV

V

CS1

The minimum power

LEB

switch turn on time

300 500 650 ns

FEEDBACK INPUT SECTION

Input Resistance of FB Pin RFB VFB=4V 1 1.6 2
Feedback Threshold VFB 3.98 4.04 4.1 V
LINE COMPENSATION SECTION
Line Compensation Current I

VFB=-5V 6

LINE

CABLE COMPENSA TION SECTION

Cable Compensation
Voltage

FB

_CABLE/VFB

%

AP3772B 2 3 4 %
AP3772C 0 %

AP3772A 5 6 7 %

∆V

DYNAMIC FUNCTION SECTION
Delay Time for Dynamic

Function
Trigger Voltage for
Dynamic Function

t

110 150 200 µs

D

V

120 150 180 mV

TRIGGER

PROTECTION SECTION
Over Voltage Protection VFB(OVP) 7 8 9 V

Maximum On Time of
Primary Side

tonp

(MAX)

14 18 30

V
V

µA

MΩ

µA

µs

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Advance Datasheet

Low-Power Off-line Primary Side Regulation Controller AP3772

Typical Performance Characteristics

800

700

600

40

35

500

400

300

Operating Current (µA)

200

100

10 15 20 25 30

Supply Voltage (V)

30

Source Current (mA)

25

20

10 15 20 25 30

Supply Voltage (V)

Figure 4. Operating Current vs. Supply Voltage Figure 5. Source Current vs. Supply Voltage

5.0

500

4.5

4.0

3.5

450

400

3.0

Minimal Operating Voltage (V)

2.5

2.0

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

Ambient Temperature (oC)

Operating Current (µA)

350

300

-40-20 0 20406080100120140

Ambient Temperature (oC)

Figure 6. Minimal Operating Voltage vs.

Ambient Temperature

Figure 7. Operating Current vs.

Ambient Temperature

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Advance Datasheet

Low-Power Off-line Primary Side Regulation Controller AP3772

Typical Performance Characteristics (Continued)

2.0

1.5

1.0

Start-up Current (µA)

0.5

Start-up Voltage (V)

0.0

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

Ambient Temperature (oC)

Figure 8. Start-up Current vs. Ambient Temperature

Figure 9. Start-up Voltage vs. Ambient Temperature

2.00

1.75

1.50

1.25

FB Input Resistance (MΩ)

1.00

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

Ambient Temperature (oC)

18

17

16

15

14

13

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

Ambient Temperature (oC)

30

28

26

24

Source Current (mA)

22

20

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

Ambient Temperature (oC)

Figure 10. FB Input Resistance

vs. Ambient Temperature

Figure 11. Source Current

vs. Ambient Temperature

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gure

ature

Advance Datasheet

Low-Power Off-line Primary Side Regulation Controller AP3772

Typical Performance Characteristics (Continued)

600

155

575

550

525

Current Sense Voltage (mV)

500

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

Ambient Temperature (oC)

150

Delay Time (µs)

145

140

-20-100 1020304050607080

Ambient Temperature (oC)

Figure 12. Current Sense Voltage vs.

Ambient Temperature

Figure 13. Delay Time vs. Ambient Temperature

19.0

18.5

18.0

600

575

17.5

17.0

16.5

Primary Side Maximum On Time (µs)

16.0

-40-200 20406080100120140

Ambient Temperature (oC)

550

LEB (ns)

525

500

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

Ambient Temperature (oC)

Figure 14. Primary Side Maximum On Time

vs. Ambient Temperature

Fi

15. LEB vs. Ambient Temper

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Advance Datasheet

Low-Power Off-line Primary Side Regulation Controller AP3772

Typical Performance Characteristics (Continued)

4

9

3.9

3.8

3.7

Feedback Voltage (V)

3.6

3.5
10 15 20 25 30

Supply Voltage (V)

8

7

Line Compensation Current (µA)

6

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

Ambient Temperature (oC)

Figure 16. Feedback Voltage vs. Supply Voltage

Figure 17. Line Compensation Current vs.

Ambient Temperature

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Advance Datasheet

Low-Power Off-line Primary Side Regulation Controller AP3772

Typical Application

Figure 18. 5V/1A Output for Battery Charger of Mobile Phone

(The AP4340 Is Used to Achieve Fast Dynamic Response)

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Advance Datasheet

Low-Power Off-line Primary Side Regulation Controller AP3772

Mechanical Dimensions

SOT-23-6 Unit: mm(inch)

0°
8°

0.200(0.008)

0.300(0.012)

0.400(0.016)

6

2.820(0.111)

3.020(0.119)

5

0.300(0.012)

0.600(0.024)

4

2.650(0.104)

2.950(0.116)

0.950(0.037)TYP

Pin 1 Mark

1.500(0.059)

1.700(0.067)

123

1.800(0.071)

2.000(0.079)

0.700(0.028)REF

0.000(0.000)

0.150(0.006)

0.900(0.035)

1.300(0.051)

0.100(0.004)

0.200(0.008)

1.450(0.057)
MAX

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