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MB39A126



Fujitsu Component Limited 로고
Fujitsu Component Limited
39A126 데이터시트, 핀배열, 회로
www.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 comparator for the voltage detection of the AC adapter, and selects the AC adapter or battery auto-
matically 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)
PACKAGES
(Continued)
24-pin plastic SSOP
28-pin plastic QFN
(FPT-24P-M03)
(LCC-28P-M11)
Datasheet pdf - http://www.DataSheet4U.net/


39A126 데이터시트, 핀배열, 회로
www.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)
• Totem-pole type output for Pch MOS FET
2
Datasheet pdf - http://www.DataSheet4U.net/




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