TC43 Datasheet, PDF (5/6 Pages) TelCom Semiconductor, Inc – LINEAR BUILDING BLOCK - VOLTAGE REFERENCE, DUAL OP AMP, DUAL COMPARATOR WITH SHUTDOWN MODE

LINEAR BUILDING BLOCK –
PRELIMINARY INFORMATION
VOLTAGE REFERENCE, DUAL OP AMP,
DUAL COMPARATOR WITH SHUTDOWN MODE
TC43
3V
ALKALINE
TO SYSTEM DC/DC
CONVERTER
R4, 470k, 1%
+
AMP1
–
R2, 330k, 1%
R5, 7.5M
+
CMPTR1
–
BATTLOW
TC43
R1, 270k, 1%
Vr
+5V
–
CMPTR2
+
R6, 7.5M
R3, 470k, 1%
BATTFAIL
Figure 2. Precision Battery Monitor
V_IN
SHDN
+
AMP1
–
2N2222
V_OUT1
+
AMP2
–
2N2222
V_OUT2
Vr
RA
C1, 1µF
RA
C2, 1µF
RB
RB
TC43
V_OUT = Vr x (RA + RB)/RB
Figure 3. Dual Low Dropout Regulator
5