LT3496EFE(RevE) 데이터 시트보기 (PDF) - Linear Technology

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LT3496EFE
(Rev.:RevE)

Triple Output LED Driver

Linear Technology 

LT3496

BLOCK DIAGRAM

+VSENSE–

ILED

M1

LED1

C2

RSENSE 0.2Ω

D1

L1

VIN

C1

R3

R4

RC

CC

OVP1

VC1

CAP1

LED1

TG1

PWM1

+ V1 –

R1 2k

EAMP

+

A1

–

A7

MOSFET

DRIVER

–

A6

+

1V

1V +

CTRL1

+ A8

Q3

–

CTRL

BUFFER

SLOPE

VC –

+

SR LATCH

A3

A2

RQ

S

PWM

COMPARATOR

R2

20k

PWM1

NPN

DRIVER

A4

A5

ISENS2

A10

SW1

Q1

GND

REPLICATED FOR EACH CHANNEL

VIN

C3

VIN

SHDN

VREF

INTERNAL

REGULATOR

AND UVLO

2V

REFERENCE

–

A9

+

R5

C4

R6

VIN

ISRC

200μA

RAMP

GENERATOR

Q2

OSCILLATOR

FADJ

SHARED COMPONENTS

3496 BD

Figure 1. LT3496 Block Diagram Working in Boost Configuration

3496fe

8

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