PCA9422BUK中文资料数据手册PDF规格书

Features and benefits

• Linear battery charger for charging single cell Li-Ion battery

– 26 V tolerance on VIN pin

– Programmable input OVP (5.75 V)

– Programmable constant current (up to 640 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 (Over Voltage Protection), battery OCP (Over Current

Protection), thermal protection

– JEITA compliant

– Battery attached detection

– Over-temperature protection

• Three step-down DC/DC converters

– Very low quiescent current

– Programmable output voltage

– SW1: core buck converter, 0.4 V~1.975 V output, 6.25 mV/step, up to 300 mA

– SW2: system buck converter, 0.4 V~3.4 V output, 25 mV/step, up to 500 mA

– SW3: core buck converter, 0.4 V~1.975 V output, 6.25 mV/step, up to 300 mA

– Low power mode for extra power saving

• One Buck-Boost converter

– Ultra-low quiescent current

– High-efficient Boost mode

– Seamlessly transition between Buck, Boost and Buck-Boost modes

– 2.5 V~5.5 V input and 1.8 V~5.0 V output, 25 mV/step, up to 500 mA

• Four LDOs

– Programmable output voltage regulation

– LDO1: always-on LDO, 0.8 V~3.0 V output, 25 mV/step, up to 10 mA

– LDO2: system LDO/Load switch, 0.5 V~1.95 V output, 25 mV/step, up to 200 mA

– LDO3: system LDO/Load switch, 0.5 V~1.95 V output, 25 mV/step, up to 200 mA

– LDO4: LDO, 0.8 V~3.3 V output, 25 mV/step, up to 200 mA

• 1 MHz I2C-bus slave interface

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

• Offered in 7 x 7 bump-array WLCSP

Applications

• Low power microcontroller application

• Wearable Devices

• IoT