Datasheet

LT1004-1.2, LT1004-2.5
MICROPOWER INTEGRATED VOLTAGE REFERENCES
SLVS022M − JANUARY 1989 − REVISED MAY 2008
13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
1 MΩ
Battery Output
12 V
LO = Battery Low
R1
†
1%
133 kΩ
1%
LT1004-1.2
+
−
TLC271
†
R1 sets trip point, 60.4 kΩ per cell for 1.8 V per cell.
Figure 28. Lead-Acid Low-Battery-Voltage Detector
V
CC
− 1 V
0.015
LT1084
ADJ
V
I
V
O
V
O
V
I
10 µF
10 µF
120 Ω
LT1004-1.2
2 kΩ
V
CC−
+
+
R1 ≤
R1
Figure 29. Variable-Voltage Supply