MB3891 Datasheet, PDF (25/29 Pages) Fujitsu Component Limited. – Power Management IC for GSM Mobile Phone

MB3891
s OPERATION TIMING CHART
Input
VBAT1 to VBAT4,
VCC-VSIM
CONT1
CONT6
CONT5
CONT2
CONT3
SW1-ON
SW2-ON (SW3-ON)
VSIM-ON
SIMPROG
Output
REF-OUT
OUT6
OUT1
XPOWERGOOD
2.0 V
delay
OUT5
OUT2
OUT3 (OUT4)
SW1-OUTPUT
SW2-OUTPUT
(SW3-OUTPUT)
VSIMOUT
VSIMOUT = 5 V
VSIMOUT = 3 V
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (17)
(1) : Battery controlled
(2) : BACKUP UVLO ON
(3) : phone turned on
(4) : XPOWERGOOD on
(5) : OUT1 hold
(6) to (12) : µP controlled
(14) : Main UVLO off
(16) : BACKUP UVLO off
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