LTC1754-3.3 LINER [Linear Technology], LTC1754-3.3 Datasheet - Page 9

• Manufacturer Part Number: LTC1754-3.3
• Description: Micropower, Regulated 3.3V/5V Charge Pump with Shutdown in SOT-23
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIO S
10 F
V
5V
IN
1.2M
475k
1N4148
Low Power Battery Backup with Autoswitchover and No Reverse Current
75k
U
+
2-CELL
NiCd
BATTERY
USB Port to Regulated 5V Power Supply
10k
1M
10 F
10 F
5
4
3
6
5
V
IN
C
LTC1754-3.3
–
4
LTC1540
GND
1 F
5
3
2
7
2
4
LTC1754-5
SHDN
C
V
+
1 F
OUT
6
1
2
1
3
8
3
6
1
LTC1521-3.3
LTC1754-3.3/LTC1754-5
HIGH = BACKUP MODE
10 F
2
10 F
5V 4%
50mA
1754 TA06
V
1
OUT
V
I
I
OUT
OUT
OUT
= 3.3V
300mA
20mA BACKUP
175433 TA03
9