Fujitsu MB3891 manual Block Diagram

MB3891

■BLOCK DIAGRAM

			VBAT2			VBAT1
			20		8	9 10 11
			Over		LDO1			12
CONT1 14			Temp				OUT		OUT1
			Protection		ON			13
	Main						POR	17	XPOWERGOOD
	UVLO							18	DELAYCAP
CONT6 15								19	GND1
					LDO2			6 OUT2
							OUT
					ON			7
CONT2 16
				SW1				46	SW1-INPUT
SW1-ON 53
SW2-ON 54								45	SW1-OUTPUT
								52	SW2-INPUT
				SW2
SW3-ON 55								51	SW2-OUTPUT
				SW3				48	SW3-INPUT
CONT3 56								47	SW3-OUTPUT
								60
								61	VBAT3
CONT5 57								62
					LDO3
CONT4 44							OUT	3	OUT3
					ON			4
VREF 22								5	GND3
VFIL 23	VREF	+	VREF-AMP					42	VBAT4
					LDO4			43
		−					OUT	40	OUT4
REF-OUT 24					ON			41
					CONT4
RESET-IN 33								39	GND4
CLK-IN 34					LDO5
∝P-IO 35	GSM/SIM						OUT	58	OUT5
	Logic				ON
RST 36	Level
	Translation
								59	GND5
CLK 37
SIM-IO 38				BACKUP	LDO6
							OUT	21	V-BACKUP
VCC-VSIM 25				UVLO	ON
VSIM-ON 26		VSIMOUT
SIMPROG 27								30	VCAP+
		Charge-pump
OSC 28								31	VCAP−
	32		29				N.C.
	GND-VSIM		VSIMOUT
							Pin : 1, 2, 49, 50, 63, 64

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