Diodes AP3608E Manuel d'utilisateur télécharger pdf (Page 4)

EIGHT-CHANNEL CONSTANT CURRENT SINK WITH CURRENT MATCH AP3608E

Data Sheet

Mar. 2011 Rev. 1. 5 BCD Semiconductor Manufacturing Limited

Functional Block Diagram

Figure 3. Functional Block Diagram of AP3608E

A (B)

A for QFN-4

×4-24

B for TSSOP-20(EDP)/SOIC-20

PWM Dimming

SDB

DFF

Bandgap

UVLO

OTP

Logic

Time

Out

100mV

CH1

CH2

Disable

All STG

Synchronous

with PWM

Signal

100:1

ISET

Current Sink

CH3

Current Sink

CH4

Current Sink

CH5

Current Sink

CH6

Current Sink

CH7

Current Sink

CH8

CH2

Min.(CH1...CH8,FBx)

CH3CH4CH5CH6CH7CH8

Max.(CH1...CH8)

STG

(Short To GND)

COMP

100mV

Test

CH1...CH8

REF

CH1

VCC

GND

PWM

REF

OPA

SDBX

FBX

1 (1)

5 (11)

8 (13)

9 (14)

(15)

(16)

(17)

14, 21 (5, 6, 18)15 (19)

(20)

(10)

(9)

(8)

(7)

(4)

(3)

(2)

1 2 3 4 5 6 7 8 9 ... 14 15

Data Sheet 1
General Description 1
Features 1
Applications 1
Pin Configuration 2
Pin Description 3
Current per Channel (mA) 7
Duty Cycle (%) 7
RV1941I /.= 9
Data Sheet 11

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