Rainbow Electronics MAX17047 - Manual (Page 12)

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MAX17047
ModelGauge m3 Fuel Gauge
Figure 6. Operating Circuits that Share Pack Thermistor with System Charger
Figure 5. Typical Operating Circuit
MAX17047
VOLTAGE BASED
ON EXISTING
CHARGER REQUIREMENTS
V BIAS
V SYSTEM
V BATT
THERMISTOR
INSIDE
CELL PACK
MAX17047 + CHARGER
WITH EXTERNAL BIAS
PK- PK-
CHARGER WITH
V TT + THRM
AVAILABLE
P P
V TT
THRM
CSP
AIN
MAX17047
V BIAS
2.8V < V BIAS < V INTERNAL + 0.6V
V SYSTEM
V BATT
THERMISTOR
INSIDE
CELL PACK
MAX17047 + CHARGER
WITH INTERNAL BIAS
CHARGER WITH
INTERNAL
BIAS
P
V TT
THRM
CSP
AIN
V INTERNAL
ON DURING
CHARGE
OFF DURING
DISCHARGE
0.1µF 0.1µF
OPTIONAL
10nF
OPTIONAL
10k I
PK-
PK+
T
OPTIONAL
10k I
NTC
THERMISTOR 10m I
RSNS
CSP
REG
AIN SCL
THRM
V BATT V TT
CSN EP
SDA
ALRT
MAX17047
OPTIONAL
200k I
OPTIONAL
5k I
SYSTEM BATTERY PACK
HOST
µP
PROTECTION IC
THERMISTOR
MEASUREMENT OPTIONAL