Datasheet > MB3829

MB3829

更新时间： 2024-11-17 22:39:23

品牌	Logo	应用领域
富士通 - FUJITSU		移动电话
页数	文件大小	规格书
24页	441K
描述
System Power Supply IC for Mobile Telephone

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数据手册

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MB3829 数据手册

March 1998

Edition 1.0

DATA SHEET

MB3829

System Power Supply IC for Mobile Telephone

DESCRIPTION

48-PIN PLASTIC LQFP

(FPT-48P-M05)

This power supply IC incorporates a 4-channel series regulator and a battery

backup function. It is a multi-function power supply IC with an output control

function and momentary power-loss detection circuit, which are both

required for mobile telephones. It also incorporates a speaker amplifier and a

buzzer driver. Since it has a built-in power system suitable for mobile

telephones, it promises equipment downsizing.

FEATURES

Power consumption during standby

: 0.22 mW (typ.)

4-channel low-saturation voltage type : 6 Ω typ. for channels 1-3

series regulator

20 Ω typ. for channel 4

Battery backup function

Momentary power-loss and power-restoration functions

ON/OFF switch circuit with an operating error prevention function

BTL amplifier for driving the speaker

: Output power= 90 mW typ.

Buzzer driver to permit changing the sound volume : 200 mA max.

Power supply voltage drops are accurately detected.

Hysteresis is provided for detection voltage.

Watchdog timer stop function is provided (inhibit pin).

Watchdog monitoring time and reset time are set independently.

This device contains circuitry to protect the inputs against

damage due to high static voltages or electric fields.

However, it is advised that normal precautions be taken to

avoid application of any voltage higher than maximum rated

voltages to this high impedance circuit.

1998 by FUJITSU LIMITED



12 3 4 5 6 7...24

中文翻译

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