‧Charger:Adapter & Battery Two Input with Auto PowerDynamic Path.
‧PWR_IN LDO support continuous 1.5A, peak 2Acurrent
‧4.5V to 5.5V Operation Voltage Range with Max.Input 18V from PWR_IN Pin
‧Set Charge Current by ISETA Pin
‧Charge Status Indicator
‧Interrupt for PWR_IN Plug In/Out and Charger Done.
‧Battery Temperature Monitoring
‧Hysteretic Buck:Max. Efficiency Up to 90%
‧Low Voltage Detector
‧I2C Compatible Interface
‧Power ON Timing Control
‧RoHS Compliant and Halogen Free
Power Management ICs for Handheld Device
【产品应用】‧GPS and PDA
【文字介绍】The RT9941 is a complete power management IC (PMIC) for handheld device platform. This PMIC contains a fully integrated linear charger for a single cell Lithium Ion battery, five LDO linear regulators and two high efficiency buck converters, a comparator, a reset and an I2C serial interface to program one buck and one regulator output voltages as
well as power on timing control for complete flexibility.
The linear charger integrates LDO, MOS pass element, and thermal-regulation circuitry. The proprietary thermalregulation
circuitry limits the die temperature when fast charging or while exposed to high ambient temperatures, allowing maximum charging current without damaging the IC.