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Fujitsu MB3891 Datasheet
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DS04-27801-1EFUJITSU SEMICONDUCTORDATA SHEETASSP For Power Management Applications (Mobile Phones)Power Management ICfor GSM Mobile PhoneMB3891nnnn DESCRIPTIONMB3891 is intended to be used in future GSM-phones, Dual Band phones and Dual Mode phones. It contains allthe necessary functions to support all Digital, Analog and RF blocks in these phones. A Charge-pump includinga Logic Level Translation circuit is built in to support SIM-card (SmartCard) of both 3 and 5 Volt technology. Thecircuit 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.nnnn 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 functionnnnn PACKAGE64-pin plastic LQFP(FPT-64P-M03) |
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