Datasheet

LT1073
11
APPLICATIO S I FOR ATIO
WUUU
Figure 12. Settling Low Battery Detector Trip Point Figure 13. Output Ripple Reduction Using Gain Block
Table 2. Inductor Manufacturers
MANUFACTURER PART NUMBERS
Gowanda Electronics Corporation GA10 Series
1 Industrial Place GA40 Series
Gowanda, NY 14070
716-532-2234
Caddell-Burns 7300 Series
258 East Second Street 6860 Series
Mineola, NY 11501
516-746-2310
Coiltronics International Custom Toroids
984 S.W. 13th Court Surface Mount
Pompano Beach, FL 33069
305-781-8900
Toko America Incorporated Type 8RBS
1250 Feehanville Drive
Mount Prospect, IL 60056
312-297-0070
Renco Electronics Incorporated RL1283
60 Jefryn Boulevard, East RL1284
Deer Park, NY 11729
800-645-5828
Table 3. Capacitor Manufacturers
MANUFACTURER PART NUMBERS
Sanyo Video Components OS-CON Series
1201 Sanyo Avenue
San Diego, CA 92073
619-661-6322
Nichicon America Corporation PL Series
927 East State Parkway
Schaumberg, IL 60173
708-843-7500
Sprague Electric Company 150D Solid Tantalums
Lower Main Street 550D Tantalex
Stanford, ME 04073
207-324-4140
TYPICAL APPLICATIO S
U
1.5V to 3V Step-Up Converter 1.5V to 9V Step-Up Converter
+
220Ω
L1
†
120µH
3V OUTPUT
20mA AT
V
BATTERY
= 1V
100µF
536k*
40.2k*
1073 TA03
LT1073
I
LIM
V
IN
SW1
FB
SW2GND
1.5V
CELL
1N5818
* 1% METAL FILM
†
L1 = GOWANDA GA10-123k
OR CADDELL-BURNS 7300-14
+
L1
†
120µH
9V OUTPUT
7mA AT V
BATTERY
= 1V
16mA AT V
BATTERY
= 1.5V
47µF
1M*
24.3k*
1073 TA04
LT1073
I
LIM
V
IN
SW1
FB
SW2GND
1.5V
CELL
1N5818
* 1% METAL FILM
†
L1 = GOWANDA GA10-123k
OR CADDELL-BURNS 7300-14
+
R3
680k
L1
D1
V
OUT
R1
C1
R2
1073 F13
LT1073
I
LIM
V
IN
SW1
SETFB
AO
SW2GND
V
BAT
V
OUT
= + 1 212mV
( )
R2
R1
( )
–
+
1073 F12
212mV
REF
SET
LT1073
V
IN
GND
A0
R1
R2
100k
V
BAT
TO
PROCESSOR
5V
R1 = R2
( –1 )
V
LB
= BATTERY TRIP POINT
V
LB
212mV