LT3755 Просмотр технического описания (PDF) - Linear Technology

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Компоненты Описание

производитель

LT3755

40VIN, 75VOUT LED Controllers

Linear Technology 

Block Diagram

LT3755/LT3755-1/LT3755-2

SHDN/UVLO – A6

1.22V +

2.1µA

FB

SHDN

1.25V

+ A5

–gm

VC

–

+

1.3V

OVFB

COMPARATOR

10µA AT

FB = 1.25V

PWMOUT PWM

1.25V

– LDO

+A8

VIN

7.15V INTVCC

SHORT-CIRCUIT

DETECT +

–+ 150mV

–A10

ISN

SCILMB

gm

+ EAMP

ISP

5k

–A1

CTRL

CTRL

+ BUFFER

1.1V +–A3

Q2

VREF

–

+A7

2V

50k

140µA

FAULT

LOGIC

TLIM

170k 165°C

10µA

10µA AT

A1+ = A1–

SCILMB

+

–A2 PWM

COMPARATOR

VC

SSCLAMP

RAMP

GENERATOR

10µA

1.25V

100KHz TO 1MHz

OSCILLATOR

+

+– FREQ

PROG

RQ

S

DRIVER

ISENSE

A4

–

1.2V

FB +

GATE

SENSE

GND

OPENLED

OPTION

FOR

LT3755

AND

LT3755-2

SS

RT

SYNC

OPTION FOR

LT3755-1

37551 BD

37551fd



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