MB3891 Fujitsu Microelectronics, Inc., MB3891 Datasheet

Manufacturer Part Number

MB3891

Description

Power Management Ic For Gsm Mobile Phone

Manufacturer

Fujitsu Microelectronics, Inc.

Datasheet

1.MB3891.pdf (29 pages)

FUJITSU SEMICONDUCTOR

ASSP For Power Management Applications (Mobile Phones)

Power Management IC

for GSM Mobile Phone

MB3891

DESCRIPTION

MB3891 is intended to be used in future GSM-phones, Dual Band phones and Dual Mode phones. It contains all

the necessary functions to support all Digital, Analog and RF blocks in these phones. A Charge-pump including

a Logic Level Translation circuit is built in to support SIM-card (SmartCard) of both 3 and 5 Volt technology. The

circuit contains a charger for a rechargeable Lithium coin cell of a Real Time Clock.

A complex control circuit is built in to generate main reset and to turn on and off the different LDO’s.

FEATURES

• Supply voltage range

• Low power consumption current during standby

• 6-channel low-saturation voltage type series regulator

• Error prevention function during Low voltage

• Power on reset function

• 3 V/5 V SW for SIM-Card

• SIM interface function

• Backflow prevention function for Battery-Backup

• Temperature prevention function

PACKAGE

DATA SHEET

64-pin plastic LQFP

(FPT-64P-M03)

: 2.1 V/2 channels, 2.8 V/3 channels, 2.5 V/2.8 V switch

: 3 V to 5.5 V

: 400 A (MAX)

DS04-27801-1E