ADD5205 데이터 시트보기 (PDF) - Analog Devices

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ADD5205

Four-String White LED Driver

Analog Devices 

Data Sheet

FUNCTIONAL BLOCK DIAGRAM

ADD5205

VIN

1

VOLTAGE

REFERENCE

UVP COMP

SHDN

2

SHUTDOWN

THERMAL

SHUTDOWN

UVP

REF

LL COMP

LL

ERROR REF

AMP

REF

GM

PWM

COMP

R

RC

S

DCOMP

CC

DREF OSC

OVP

5

OCP

REF

R1

OVP

REF

R2

Q

HEADROOM CONTROL

+

+

CURRENT SENSE

SOFT START

RSENSE

LED OPEN FAULT

PROTECTION

ISET 7

VREF GENERATOR

PWM 6

R_FILTER

C_FILTER 8

CURRENT SOURCE 1

CURRENT SOURCE 2

CURRENT SOURCE 3

CURRENT SOURCE 4

4 SW

3 GND

12 FB1

11 FB2

10 FB3

9 FB4

Figure 2. Functional Block Diagram

Rev. 0 | Page 3 of 16

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