TC1303A Datasheet, PDF (5/36 Pages) Microchip Technology – 500 mA Synchronous Buck Regulator, + 300 mA LDO with Power-Good Output

TC1303A/TC1303B/TC1303C/TC1304
Typical Application Circuits
V_IN
2.7V to 4.2V
4.7 µF
R_PULLUP
Processor
RESET
TC1303A
Fixed-Output Application
10-Lead MSOP
8 V_IN1
L_X 9
2 V_IN2
P_GND 10
7 SHDN1 ^VOUT1 6
1 SHDN2 ^VOUT2 3
4 PG
A_{GND 5}
4.7 µH
4.7 µF
V_OUT1
1.5V @ 500 mA
1 µF
V_OUT2
2.5V @ 300 mA
TC1303B
Adjustable-Output Application
10-Lead DFN
Input
Voltage
4.5V to 5.5V
4.7 µF
*Optional
Capacitor
V_IN2
1.0 µF
Processor
RESET
8 _VIN1
2 V_IN2
L_X ⁹
P_{GND 10}
7 SHDN1 ^VOUT1 6
1 SHDN2 ^VOUT2 3
4 PG
A_{GND 5}
(Note)
4.7 µH
4.7 µF
200 kΩ 4.99 kΩ
1 µF
V_OUT2
3.3V @
300 mA
33 pF
121 kΩ
Note: Connect DFN package exposed pad to A_GND.
V_OUT1
2.1V @
500 mA
V_IN
2.7V to 4.2V
4.7 µF
R_PULLUP
Processor
RESET
TC1304
Fixed-Output Application
10-Lead MSOP
8 V_IN1
2 V_IN2
7 AGND
1 SHDN
4 PG
L_X 9
P_GND 10
V_{OUT1 6}
V_{OUT2 3}
A_{GND 5}
4.7 µH
4.7 µF
V_OUT1
1.2V @ 500 mA
V_OUT2
1 µF 2.5V @ 300 mA
© 2005 Microchip Technology Inc.
DS21949B-page 5