TC1303A_08 datasheet(4/38 Pages) MICROCHIP

Part #	TC1303A

Description	500 mA Synchronous Buck Regulator, 300 mA LDO with Power-Good Output

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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4 / 38 page

TC1303A/TC1303B/TC1303C/TC1304

DS21949C-page 4

Functional Block Diagram – TC1304

Synchronous Buck Regulator

NDRV

PDRV

PGND

VIN1

LX

Driver

PGND

Control

VOUT1/VFB1

VIN2

SHDN

PG

VREF

LDO

VOUT2

AGND

PGND

Undervoltage Lockout

UVLO

VREF

TC1304(Note)

PG Generator with Delay

(UVLO)

Output Voltage

Sequencer ckt.

AGND

Note:

PG open-drain for TC1304

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