PCA9420中文资料恩XP数据手册PDF规格书

Features and benefits

• Linear battery charger for charging single cell li-ion battery

– 20 V tolerance on VIN pin

– Programmable input OVP (5.5 V or 6 V)

– Programmable constant current (up to 315 mA) and pre-charge low voltage current

threshold

– Programmable constant voltage regulation

– Programmable automatic recharge voltage and termination current threshold

– Built-in protection features such as input OVP, battery SCP, thermal protection

– JEITA compliant

– Battery attached detection

– Over-temperature protection

• Two step-down DC-DC converters

– Very low quiescent current

– Programmable output voltage

– SW1: core buck converter, 0.5 V to 1.5 V output, 25 mV/step, and a fixed 1.8 V, up to

250 mA

– SW2: system buck converter, 1.5 V to 2.1 V/2.7 V to 3.3 V output, 25 mV/step, up to

500 mA

– Low-power mode for extra power saving

• Two LDOs

– Programmable output voltage regulation

– LDO1: always-on LDO, 1.70 V to 1.90 V output, 25 mV/step, up to 1 mA

– LDO2: system LDO, 1.5 V to 2.1 V/2.7 V to 3.3 V output, 25 mV/step, up to 250 mA

• 1 MHz I2C-bus target interface

• -40 °C to +85 °C ambient temperature range

• Offered in 5 x 5 bump-array WLCSP and 24-pin QFN package

Applications

• Low power microcontroller application