3X3MLPQ-16L-TR datasheet(6/11 Pages) MICROSEMI

部品番号	3X3MLPQ-16L-TR

部品情報	SINGLE INPUT SUPPLY PWM CONTROLLER WITH LDO CONTROLLER

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メーカー	MICROSEMI [Microsemi Corporation]

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LX2750

Microsemi

Analog Mixed Signal Group

6

Rev. 1.0a

07/14/10

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

BLOCK DIAGRAM

Figure 2 - Simplified block diagram of the LX2750

VIN UVLO

POR

SS_done

LDO_FB

LDO_DRV

0.3V

Bias

Generator

1.25V

0.8V

BST

HDRV

SW

LDRV

9/8

RT

GND

VCC

Hiccup

Reset dominant

FET Drivers

Latchout logic

VIN

START

FB

60%*Vp

SS_half_done

60%*0.8V

POR

R

VIN

MODE

MODE SELECTION

VOLTAGE MODE

CONSTANT ON TIME

FCCM

MODE SELECTION

SYNCHRONOUS MODE

DIODE EMULATION MODE

VREF_OC

LDO

PGOOD

FB

COMP

OSC

Digital

start Up

START

CLK

HDin

Internal RT

FB

Dis_EA

PWM/PFM control core

IFF

comp

RT

9k

LDOPOR

LDO

amplifier

LDOPOR

SS_DAC

REFIN

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