TC1040 Datasheet, PDF (6/14 Pages) Microchip Technology – Linear Building Block . Dual Low Power Comparator and Voltage Reference with Shutdown

TC1040
FIGURE 4-2:
PRECISION BATTERY MONITOR
To System DC/DC
Converter
V_DD
TC1034
+
AMP1
–
R2, 330k, 1%
R4, 470k, 1%
R5, 7.5M
V_DD
+
COMPA
–
BATTLOW
+
3V
Alkaline
TC1040
R1, 270k, 1%
V_R
V_DD
–
COMPB
+
BATTFAIL
R6, 7.5M
R3, 470k, 1%
FIGURE 4-3:
TC1040
R_A
V_SRC
R_B
COMPARATOR
EXTERNAL HYSTERESIS
CONFIGURATION
R_C
V_DD
+
– _COMPA
1/2
V_R
V_OUT
DS21345B-page 6
© 2002 Microchip Technology Inc.