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MB3829 - System Power Supply

General Description

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

Key Features

  • Power consumption during standby 4 - channel low - saturation voltage type series regulator 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 pr.

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Other Datasheets by Fujitsu Semiconductor Limited

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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March 1998 Edition 1.0 DATA SHEET MB3829 DESCRIPTION System Power Supply IC for Mobile Telephone 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.