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| TC1303A_08 Datasheet, PDF (3/38 Pages) Microchip Technology – 500 mA Synchronous Buck Regulator, + 300 mA LDO with Power-Good Output | |||
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TC1303A/TC1303B/TC1303C/TC1304
Functional Block Diagram â TC1303
VREF
Undervoltage Lockout
(UVLO)
UVLO
VIN1
VIN2
SHDN1
SHDN2
Synchronous Buck Regulator
Control
PDRV
Driver
NDRV
AGND
PGND
PGND
Sense Switcher for A,C
VREF
TC1303A(1),B(2),C(1) options
PG Generator with Delay
Sense LDO for B,C
LDO
UVLO
LX
PGND
VOUT1/VFB1
PG
VOUT2
AGND
Note 1: PG open-drain for A,C options
2: PG push-pull output for B option
© 2008 Microchip Technology Inc.
DS21949C-page 3
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