39A126 Datasheet | Fujitsu Component Limited

.DataSheet.co.kr FUJITSU SEMICONDUCTOR DATA SHEET DS04-27248-1E ASSP for Power Supply Applications (Secondary battery) DC/DC Converter IC for Charging Li-ion Battery MB39A125/126 - DESCRIPTION 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 voltage, low standby current, and high efficiency, which makes them ideal as a built-in charging device in products such as notebook PC. - Features - - - - High efficiency : 97% (MAX) Built-in two constant current control circuits Analog control of the charging current value (+INE1, +INE2 terminal) Built-in AC adapter voltage detection function (ACOK, XACOK terminal) (Continued) - PACKAGES 24-pin plastic SSOP 28-pin plastic QFN (FPT-24P-M03) (LCC-28P-M11) Datasheet pdf - http://..net/ .DataSheet.co.kr MB39A125/126 (Continued) - External output voltage setting resistor : MB39A125 - Built-in output voltage setting resistor : MB39A126 - Built-in charge stop function at low VCC - Output voltage setting accuracy : ± 0.74% (Ta = - 10 °C to +85 °C) : MB39A125 : 12.6 V/16.8 V ± 0.8% (Ta = - 10 °C to +85 °C) : MB39A126 - Built-in high accuracy current detection amplifier (±5%) (At input voltage difference 100 mV) , (±15%) (At input voltage difference 20 mV) - 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)...