39A126 Overview
MB39A125/126 is a DC/DC converter IC for charging Li-ion battery, which is suitable for down-conversion, and uses pulse width modulation (PWM) for controlling the output voltage and current independently. This IC integrates the build-in parator for the voltage detection of the AC adapter, and selects the AC adapter or battery automatically for power supply to the system. Provides a wide range of power supply...
39A126 Key Features
- High efficiency : 97% (MAX) Built-in two constant current control circuits Analog control of the charging current value
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- External output voltage setting resistor : MB39A125
- Built-in output voltage setting resistor : MB39A126
- Built-in charge stop function at low VCC
- Built-in high accuracy current detection amplifier (±5%) (At input voltage difference 100 mV) , (±15%) (At input voltage
- In IC standby mode (Icc = 0 µA Typ) , make output voltage setting resistor open to prevent inefficient current loss
- Built-in soft-start circuit
- Standby current : 0 µA (Typ)