AP3772H datasheet(5/12 Pages) BCDSEMI

Part #	AP3772H

Description	Low-Power Off-line Primary Side Regulation Controller

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Manufacturer	BCDSEMI [BCD Semiconductor Manufacturing Limited]

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Preliminary Datasheet

Low-Power Off-line Primary Side Regulation Controller

AP3772H

Dec. 2012

Rev. 1. 1

BCD Semiconductor Manufacturing Limited

5

Electrical Characteristics

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

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

UVLO SECTION

Startup Threshold

VTH (ST)

13

15.5

18

V

Minimal Operating Voltage

VOPR(MIN)

3

3.5

4.5

V

STANDBY CURRENT SECTION

Startup Current

IST

VCC=VTH (ST)-1V,

Before startup

0

0.2

0.6

µA

Operating Current

ICC(OPR)

Static current

250

500

600

µA

DRIVE OUTPUT SECTION

Output Current

Sink

ISINK

Apply 1V @ OUT pin

150

330

500

mA

Source

ISOURCE

30

40

50

mA

Maximum Off Time

tOFF(MAX)

14

18

25

ms

CURRENT SENSE SECTION

Current

Sense

Threshold

Voltage at Heavy Load

VCS1

500

525

550

mV

Leading Edge Blanking

tLEB

The

minimum

power

switch turn on time

300

500

650

ns

FEEDBACK INPUT SECTION

Input Resistance of FB Pin

RFB

VFB=4V

1

1.6

2

M

Ω

Feedback Threshold

VFB

3.98

4.04

4.1

V

LINE COMPENSATION SECTION

Line

Compensation

Transconductance (Note 2)

gm

0.8

1.2

1.6

µS

CABLE COMPENSATION SECTION

Cable

Compensation

Voltage

∆V

FB_CABLE

/VFB %

AP3772HA

5

6

7

%

AP3772HB

2

3

4

AP3772HC

0

DYNAMIC FUNCTION SECTION

Delay Time for Dynamic

Function

tD

110

150

200

µs

Trigger

Voltage

for

Dynamic Function

VTRIGGER

120

150

180

mV

PROTECTION SECTION

Over Voltage Protection

VFB(OVP)

7

8

9

V

Maximum

On

Time

of

Primary Side

tonp

(MAX)

20

35

50

µs

Note 2: Line compensation voltage on CS pin:

LINE

m

PRI

AUX

DC

IN

CS

R

g

R

N

V

⋅

+

⋅

=

7

6

_

Δ

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