Datasheet Linear Technology LTC4002EDD-4.2#PBF — 数据表

LTC4002
Standalone Li-Ion
Switch Mode Battery Charger U FEATURES DESCRIPTIO ■ The LTC®4002 is a complete battery charger controller for
one (4.2V) or two (8.4V) cell lithium-ion batteries. With a
500kHz switching frequency, the LTC4002 provides a
small, simple and efficient solution to fast charge Li-Ion
batteries from a wide range of supply voltages. An external
sense resistor sets the charge current with ±5% accuracy.
An internal resistor divider and precision reference set the
final float voltage to 4.2V per cell with ±1% accuracy. ■
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■ Wide Input Supply Range:
4.7V to 22V – 4.2 Version …