Datasheet > MB3887_06

MB3887_06

更新时间： 2024-11-07 04:16:47

品牌	Logo	应用领域
富士通 - FUJITSU		转换器电池
页数	文件大小	规格书
34页	418K
描述
DC/DC Converter IC for Charging Li-ion battery

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中文翻译

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MB3887_06 数据手册

FUJITSU SEMICONDUCTOR

DATA SHEET

DS04-27709-6E

ASSP For Power Supply Applications (Secondary battery)

DC/DC Converter IC

for Charging Li-ion battery

MB3887

■ DESCRIPTION

The MB3887 is a DC/DC converter IC suitable for down-conversion, using pulse-width (PWM) charging and

enabling output voltage to be set to any desired level from one cell to four cells.

These ICs can dynamically control the secondary battery’s charge current by detecting a voltage drop in an AC

adapter in order to keep its power constant (dynamically-controlled charging) .

The charging method enables quick charging, for example, with the AC adapter during operation of a notebook PC.

The MB3887 provides a broad power supply voltage range and low standby current as well as high efficiency,

making it ideal for use as a built-in charging device in products such as notebook PC.

This product is covered by US Patent Number 6,147,477.

■ FEATURES

• Detecting a voltage drop in the AC adapter and dynamically controlling the charge current

(Dynamically-controlled charging)

• Output voltage setting using external resistor

• High efficiency

• Wide range of operating supply voltages

• Output voltage setting accuracy

• Charging current accuracy

: 1 cell to 4 cells

: 96% (VIN = 19 V, Vo = 16.8 V)

: 8 V to 25 V

: 4.2 V 0.74% (Ta = −10 °C to +85 °C , per cell)

: 5%

• Built-in frequency setting capacitor enables frequency setting using external resistor only

• Oscillation frequency range : 100 kHz to 500 kHz

• Built-in current detection amplifier with wide in-phase input voltage range : 0 V to VCC

• In standby mode, leave output voltage setting resistor open to prevent inefficient current loss

• Built-in standby current function

: 0 µA (standard)

• Built-in soft-start function independent of loads

• Built-in totem-pole output stage supporting P-channel MOS FET devices

• One type of package (SSOP-24pin : 1 type)

■ Application

• Notebook PC

12 3 4 5 6 7...34

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与MB3887_06相关器件

型号	品牌	获取价格	描述	数据表
MB3887PFV	FUJITSU	获取价格	DC/DC Converter IC for Charging Li-ion battery
MB3887PFV-XXX	FUJITSU	获取价格	Battery Charge Controller, 0.7A, 500kHz Switching Freq-Max, PDSO24, 5.60 X 7.75 MM, 1.45 M
MB3887PFV-XXX	SPANSION	获取价格	Battery Charge Controller
MB3887PFV-XXX	CYPRESS	获取价格	Battery Charge Controller, Voltage-mode, 0.045A, 500kHz Switching Freq-Max, PDSO24
MB3887PFV-XXXE1	FUJITSU	获取价格	Battery Charge Controller, 0.7A, 500kHz Switching Freq-Max, PDSO24, 5.60 X 7.75 MM, 1.45 M
MB3887PFV-XXXE1	CYPRESS	获取价格	Battery Charge Controller, Voltage-mode, 0.045A, 500kHz Switching Freq-Max, PDSO24
MB3888	FUJI	获取价格	DC/DC Converter IC for Charging Li-ion Battery
MB3888PFV	SPANSION	获取价格	Battery Charge Controller
MB3888PFV	FUJITSU	获取价格	Battery Charge Controller, Voltage-mode, 0.7A, 500kHz Switching Freq-Max, PDSO20, PLASTIC,
MB3888PFV	CYPRESS	获取价格	Battery Charge Controller, Current/voltage-mode, 0.045A, 500kHz Switching Freq-Max, PDSO20