
TC1301A/B
DS21798B-page 2
2005 Microchip Technology Inc.
Functional Block Diagrams
Typical Application Circuits
LDO #2
150 mA
LDO #1
300 mA
LDO #2
150 mA
V
IN
V
OUT1
V
OUT2
Bandgap
Reference
1.2V
SHDN2
Threshold
Detector
Time Delay
300 ms, typ
RESET
V
DET
GND
Bypass
TC1301A
V
DET
TC1301B
V
IN
SHDN2
GND
Bypass
SHDN1
LDO #1
300 mA
Threshold
Detector
Time Delay
300 ms typ
V
OUT1
V
OUT2
RESET
V
O
Bandgap
Reference
1.2V
V
OUT1
8
4
1
2
3
RESET
GND
V
DET
V
IN
7
V
OUT2
6
BATTERY
C
OUT1
1 μF Ceramic
X5R
C
1 μF
TC1301A
C
OUT2
1 μF Ceramic
X5R
C
BYPASS
(Note)
10 nF Ceramic
Bypass
SHDN2
ON/OFF Control V
OUT2
System RESET
2.8V @ 300 mA
2.6V @ 150 mA
5
V
OUT1
8
4
1
2
3
RESET
GND
SHDN1
BATTERY
C
OUT1
1 μF Ceramic
X5R
C
IN
1 μF
TC1301B
1 μF Ceramic
X5R
Bypass
V
IN
7
2.7V
to
4.2V
V
OUT2
6
SHDN2
ON/OFF Control V
OUT2
System RESET
2.8V @ 300 mA
2.6V @ 150 mA
5
ON/OFF Control V
OUT1
Note:
C
BYPASS
is optional
2.7V
to
4.2V
C
OUT2