LT1073_1 Datasheet, PDF (13/16 Pages) Linear Technology – Micropower DC/DC Converter Adjustable and Fixed 5V, 12V

TYPICAL APPLICATIO S
1.5V to 5V Step-Up Converter with Logic Shutdown
L1^†
82µH
1N5818
5V OUTPUT
1.5V
CELL
I_LIM
V_IN
SW1
LT1073
FB
GND SW2
1N4148
909k*
+
100µF
40.2k*
SHUTDOWN OPERATE
74C04
* 1% METAL FILM
† _{L1 = GOWANDA GA10-822k}
OR CADDELL-BURNS 7300-12
1073 TA11
9V
BATTERY
9V to 3V Step-Down Converter
220Ω
3V OUTPUT
I_LIM
V_IN
SW1
LT1073
FB
GND SW2 ^L1†
100µH
+
1N5818
100µF
536k*
40.2k*
* 1% METAL FILM
† _{L1 = GOWANDA GA10-103k}
OR CADDELL-BURNS 7300-13
1073 TA13
1.5V to 5V Bootstrapped Step-Up Converter
L1^†
47µH
1N5818
5V OUTPUT
50mA
2N3906
2.2k 56Ω
1.5V
CELL
I_LIM
V_IN
SW1
LT1073-5
SENSE
GND SW2
† _{L1 = GOWANDA GA10-123k}
OR CADDELL-BURNS 7300-14
MINIMUM START-UP VOLTAGE = 1.1V
+
100µF
1073 TA15
LT1073
1.5V to 5V Step-Up Converter with Low-Battery Detector
L1^†
82µH
1N5818
5V OUTPUT
1.5V
CELL
442k*
I_LIM
V_IN
SET SW1
LT1073-5
100k*
AO SENSE
GND SW2
* 1% METAL FILM
† _{L1 = GOWANDA GA10-822k}
OR CADDELL-BURNS 7300-12
100k
+
100µF
1073 TA12
LO BAT
GOES LOW
AT V_BATTERY
= 1.15V
9V to 5V Step-Down Converter
220Ω
9V
BATTERY
I_LIM
V_IN
SW1
LT1073-5
SENSE
GND SW2 ^L1†
100µH
+
1N5818
5V OUTPUT
100µF
† _{L1 = GOWANDA GA10-103k}
OR CADDELL-BURNS 7300-13
1073 TA14
Memory Backup Supply
5V MAIN
SUPPLY
5V TO MEMORY,
4.5V WHEN MAIN
SUPPLY OPEN
L1^†
82µH
1N5818
I_LIM
V_IN
1.5V
CELL
SW1
LT1073
FB
GND SW2
806k*
+
100µF**
40.2k*
* 1% METAL FILM
**OPTIONAL
† _{L1 = GOWANDA GA10-822k}
OR CADDELL-BURNS 7300-12
1073 TA16
13