MB3891

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 LDO’s. 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) MB3891 s PIN ASSIGNMENT (TOP VIEW) 47 : SW3-OUTPUT 45 : SW1-OUTPUT 48 : SW3-INPUT 46 : SW1-INPUT N.C. : 49 N.C. : 50 SW2-OUTPUT : 51 SW2-INPUT : 52 SW1-ON : 53 SW2-ON : 54 SW3-ON : 55 CONT3 : 56 CONT5 : 57 OUT5 : 58 GND5 : 59 VBAT3 : 60 VBAT3 : 61 VBAT3 : 62 N.C. : 63 N.C. : 64 33 : RESET-IN 44 : CONT4 34 : CLK-IN 43 :...