SLUSA76B December 2010 – January 2015
|BAT||10||I/O||Battery Connection. System Load may be connected.
Expected range of bypass capacitors 1 μF to 10 μF, connected from BAT to VSS.
|CHG||8||O||Charge Status indication, Low (FET ON) indicates charging, and High impedance (open drain FET OFF) in other cases|
|EN||7||I||Chip enable control. Low to enable charge or load mode, and high to enable suspend mode.|
|ISET||2||I||Programs the Fast-charge current setting. External resistor from ISET to VSS defines fast charge current value.|
|PG||6||O||Power Present indication. LOW (FET ON) When input voltage is in normal range (VBUS>BAT and VBUS>UVLO), High impedance (open drain FET OFF) in other cases.|
|TS||5||I||Temperature sense pin, connected to NTC Thermistor in the battery pack. Pulling High puts part in limited power charging mode. Must not be left floating.|
|VBUS||1||I/O||For charging mode, input for charging source, connect to external DC supply (ie, Solar Panel, Inductive charging PAD, or Wall Adapter) For load mode, output for current limited battery voltage.
Expected range of bypass capacitors 1 μF to 10 μF, connected from VBUS to VSS.
|VDPM||9||I||Programs the input voltage regulation threshold.
Expected range of programming resistor is 1 kΩ to 10 kΩ, connected from VDPM to VSS. When VDPM is floating, the VIN DPM loop operates in battery tracking mode, and the VIN DPM threshold is BAT+100 mV (BAT>3.6 V) or 3.7 V (BAT≤3.6 V) in this case. VIN DPM threshold should be programmed higher than battery voltage to ensure proper operation.
|VTSB||4||O||TS bias reference voltage pin, regulated output. No external capacitor is required from VTSB to VSS. Only enabled during charge.|
|Thermal PAD and Package||–||–||There is an internal electrical connection between the exposed thermal pad and the VSS pin of the device. The thermal pad must be connected to the same potential as the VSS pin on the printed circuit board. Do not use the thermal pad as the primary ground input for the device. VSS pin must be connected to ground at all times.|