NXP Semiconductors
UM11216
PCA9420UK-EVM evaluation board user manual
UM11216
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User manual
Rev. 1.2 — 11 March 2020
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5 Key features
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Linear battery charger for charging single cell li-ion battery
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20V tolerance on VIN pin
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Programmable input OVP (5.5V or 6V)
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Programmable constant current (up to 315 mA) and pre-charge low voltage current
threshold
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Programmable constant voltage regulation
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Programmable automatic recharge voltage and termination current threshold
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Built-in protection features such as input OVP, battery SCP, thermal protection
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JEITA compliant
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Battery attached detection
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Over-temperature protection
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Two step-down DC/DC converters with very low quiescent current
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Programmable output voltage
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SW1: core buck converter, 0.5V~1.5V output, 25mV/step, and a fixed 1.8V, up to
250mA
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SW2: system buck converter, 1.5V~2.1V/2.7V~3.3V output, 25mV/step, up to 500mA
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Low power mode for extra power saving
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Two LDOs
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Programmable output voltage regulation
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LDO1: always-on LDO, 1.70V~1.90V output, 25mV/step, up to 1mA
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LDO2: system LDO, 1.5V~2.1V/2.7V~3.3V output, 25mV/step, up to 250mA
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1 MHz I
2
C-bus slave interface
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-40°C ~ +85°C ambient temperature range