Datasheet

LT1073
13
TYPICAL APPLICATIO S
U
1.5V to 5V Step-Up Converter with Logic Shutdown
9V to 3V Step-Down Converter
1.5V to 5V Step-Up Converter with Low-Battery Detector
9V to 5V Step-Down Converter
+
L1
†
82µH
5V OUTPUT
100µF
LT1073
I
LIM
V
IN
SW1
FB
SW2GND
1N5818
* 1% METAL FILM
†
L1 = GOWANDA GA10-822k
OR CADDELL-BURNS 7300-12
1073 TA11
909k*
40.2k*
OPERATE
SHUTDOWN
1N4148
1.5V
CELL
74C04
+
L1
†
82µH
5V OUTPUT
100µF
LT1073-5
I
LIM
V
IN
SW1
SENSE
SET
AO
SW2GND
1N5818
* 1% METAL FILM
†
L1 = GOWANDA GA10-822k
OR CADDELL-BURNS 7300-12
1073 TA12
1.5V
CELL
442k*
100k*
100k
LO BAT
GOES LOW
AT V
BATTERY
= 1.15V
+
L1
†
100µH
3V OUTPUT
100µF
LT1073
I
LIM
V
IN
SW1
FB
SW2GND
1N5818
* 1% METAL FILM
†
L1 = GOWANDA GA10-103k
OR CADDELL-BURNS 7300-13
1073 TA13
9V
BATTERY
220Ω
536k*
40.2k*
+
L1
†
100µH
5V OUTPUT
100µF
LT1073-5
I
LIM
V
IN
SW1
SENSE
SW2GND
1N5818
1073 TA14
9V
BATTERY
220Ω
†
L1 = GOWANDA GA10-103k
OR CADDELL-BURNS 7300-13
+
L1
†
47µH
5V OUTPUT
50mA
100µF
LT1073-5
I
LIM
V
IN
SW1
SENSE
SW2GND
1N5818
†
L1 = GOWANDA GA10-123k
OR CADDELL-BURNS 7300-14
MINIMUM START-UP VOLTAGE = 1.1V
56Ω
1073 TA15
2.2k
1.5V
CELL
2N3906
+
L1
†
82µH
5V TO MEMORY,
4.5V WHEN MAIN
SUPPLY OPEN
100µF**
806k*
40.2k*
1073 TA16
LT1073
I
LIM
V
IN
SW1
FB
SW2GND
1.5V
CELL
1N5818
* 1% METAL FILM
**OPTIONAL
†
L1 = GOWANDA GA10-822k
OR CADDELL-BURNS 7300-12
5V MAIN
SUPPLY
1.5V to 5V Bootstrapped Step-Up Converter
Memory Backup Supply