Fujitsu MB3891 manual Parameter Symbol Pin Conditions Value Unit Min

MB3891

(Ta = +25 °C, VBAT1 to VBAT4 = VCC-VSIM = 3.6 V)

	Parameter	Symbol	Pin		Conditions		Value		Unit
			No.			Min.	Typ.	Max.
	Output voltage	VO	12,	13	−50 ∝A > OUT1 > −120 mA	2.000	2.100	2.200	V
	Line regulation	Line	12,	13	3.1 V < VBAT1 < 5.5 V			10	mV
	Load reguration	Load	12,	13	−50 ∝A > OUT1 > −120 mA			30	mV
	Ripple rejection	R.R	12,	13	f = 217 Hz	45			dB
LDO1	ΔVBAT1/ΔOUT1
(OUT1)	Dropout voltage	VDO	12,	13	OUT1 = −120 mA			500	mV
	GND current at low load	IGND	19		OUT1 > −1 mA			30	∝A
	GND current at max. load	IGND	19		OUT1 = −120 mA			2	mA
	Output noise volt. (RMS)	VNOVL	12,	13	f = 10 Hz to 1 MHz,			500	∝V
					OUT1 = 1 ∝F
		VOH	17			0.8 ⋅		OUT1	V
XPOWER-						OUT1
	Output voltage
								0.1 ⋅
GOOD		VOL	17			0			V
(RESET)								OUT1
	Hold time	TXPG	17		DELAYCAP = 0.033 ∝F	10	25	40	ms
	Output voltage	VO	6,	7	−50 ∝A > OUT2 > −50 mA	2.700	2.800	2.900	V
	Line regulation	Line	6,	7	3.1 V < VBAT1 < 5.5 V			10	mV
	Load regulation	Load	6,	7	−50 ∝A > OUT2 > −50 mA			30	mV
	Ripple rejection	R.R	6,	7	f = 217 Hz	45			dB
LDO2	ΔVBAT1/ΔOUT2
(OUT2)	Dropout voltage	VDO	6,	7	OUT2 = −50 mA			250	mV
	GND current at low load	IGND	19		OUT2 > −1 mA			30	∝A
	GND current at max. load	IGND	19		OUT2 = −50 mA			1	mA
	Output noise volt. (RMS)	VNOVL	6,	7	f = 10 Hz to 1 MHz,			350	∝V
					OUT2 = 1 ∝F
		RSW1	45,	46	SW1-INPUT = 2.8 V			4.0	Ω
General					(Gate/Source = 2.8 V)
					SW2-INPUT = 2.8 V				Ω
purpose	Input/Output resistance	RSW2	51,	52				7.0
					(Gate/Source = 2.8 V)
switches
		RSW3	47,	48	SW3-INPUT = 2.8 V			7.0	Ω
					(Gate/Source = 2.8 V)

(Continued)

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