BQ24180_1 Datasheet, PDF (8/41 Pages) Texas Instruments – Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and Accessory Power Connection

bq24180
SLUSA02 A – FEBRUARY 2010 – REVISED FEBRUARY 2010
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NAME PIN NO.
TS
E2
DRV E3
CSOUT E4, E5
PIN FUNCTIONS (continued)
I/O
DESCRIPTION
I Battery Pack NTC Monitor. Connect TS to a 4.7kΩ NTC thermistor. During DEFAULT mode, when V_TS >
V_COLD or V_TS<V_HOT charging is suspended. If V_HOT < V_TS < V_WARM charging current is reduced. The faults are
reported by the I²C interface. During host mode, the TS function is active, but does not affect charging. The
faults are only reported by the I²C interface.
O Gate Drive Supply. DRV is the supply for the gate drive of the internal MOSFETs. Bypass DRV to PGND with
a 1µF ceramic capacitor. DRV may be used to drive external loads up to 10mA. DRV is active whenever the
input is connected.
I Battery voltage and Current Sense Input. Connect to the positive terminal of the battery pack. CSOUT is also
the supply for the DCOUT output. Bypass CSOUT to PGND with 1µF ceramic capacitor.
8
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