PMIC for Low Power Applications
PCA9422 Ultra Low Power Charger+Gauge PMIC for RT5/6/700
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PCA9422 is a highly-integrated Power Management IC (PMIC), targeted to provide a full power management solution for low power microcontroller applications or other similar applications with small batteries.
The device consists of a JEITA compliant linear battery charger capable of charging up to 640 mA current. It has I²C programmable values for flexible configuration. Various built-in protection features such as input overvoltage protection, overcurrent protection, thermal protection are also provided for safe operation. PCA9422 also introduces FLEXGAUGETM which allows for zero incremental cost battery gauging when combined with NXP MCU.
Product Details
Features
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
- 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
Linear Battery Charger for Charging Single Cell Li-Ion Battery
- Programmable constant current, constant voltage regulation, automatic recharge voltage and termination current threshold
- Built-in protection features and JEITA compliant
- Battery attached detection
Documentation
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