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MB3891 Datasheet, PDF (1/29 Pages) Fujitsu Component Limited. – Power Management IC for GSM Mobile Phone | |||
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FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27801-1E
ASSP For Power Management Applications (Mobile Phones)
Power Management IC
for GSM Mobile Phone
MB3891
s 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 LDOâs.
s FEATURES
⢠Supply voltage range
: 3 V to 5.5 V
⢠Low power consumption current during standby
: 400 µA (MAX)
⢠6-channel low-saturation voltage type series regulator
: 2.1 V/2 channels, 2.8 V/3 channels, 2.5 V/2.8 V switch
⢠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
s PACKAGE
64-pin plastic LQFP
(FPT-64P-M03)
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