Fujitsu MB3878 Electrical Characteristics, Parameter Symbol Pin Conditions Value Unit Min Typ

MB3878

■ELECTRICAL CHARACTERISTICS

(Ta = +25 °C, VCC = 19 V, VCC (O) = 19 V, VREF = 0 mA)

Parameter		Symbol	Pin	Conditions		Value		Unit
			No.		Min	Typ	Max
	Output voltage	VREF	6	Ta = +25 °C	4.995	5.000	5.045	V
Reference				Ta = −30 °C to +85 °C	4.945	5.000	5.055	V
	Input stability	Line	6	VCC = 7 V to 25 V		3	10	mV
voltage block
(Ref)	Load stability	Load	6	VREF = 0 mA to −1 mA		1	10	mV
	Short-circuit	Ios	6	VREF = 1 V	−25	−15	−5	mA
	output current
		VTLH	18	VCC = VCC (O) ,	6.1	6.4	6.7	V
				VCC =
	Threshold voltage
Under voltage		VTHL	18	VCC = VCC (O) ,	5.1	5.4	5.7	V
				VCC =
lockout protection
	Hysteresis width	VH	18	VCC = VCC (O)	0.7	1.0	1.3	V
circuit block
(UVLO)	Threshold voltage	VTLH	6	VREF =	2.6	2.8	3.0	V
		VTHL	6	VREF =	2.4	2.6	2.8	V
	Hysteresis width	VH	6	VH = VTLH − VTHL	0.05	0.20	0.35	V
Soft-start block	Charge current	ICS	22		−1.3	−0.8	−0.5	∝A
(SOFT)
Triangular	Oscillation	fOSC	20	RT = 47 kΩ	260	290	320	kHz
	frequency
waveform
	Frequency
oscillator circuit		Δf/fdt		Ta = −30 °C to +85 °C				%
	temperature		20			1*
block (OSC)
	stability
	Input offset	VIO	3, 4,	FB1 = FB2 = 2 V		1	5	mV
	voltage		8, 9
	Input bias current	IB	3, 4,		−100	−30		nA
			8, 9
	Common mode		3, 4,				VCC −
	input voltage	VCM			0			V
			8, 9				1.8
	range
Error amplifier
	Voltage gain	AV	5, 7	DC		100*		dB
block
(Error Amp.1,	Frequency	BW	5, 7	AV = 0 dB		2.0*		MHz
Error Amp.2)	bandwidth
	Output voltage	VFBH	5, 7		4.7	4.9		V
		VFBL	5, 7			20	200	mV
	Output source	ISOURCE	5, 7	FB1 = FB2 = 2 V		−2.0	−0.6	mA
	current
	Output sink	ISINK	5, 7	FB1 = FB2 = 2 V	150	300		∝A
	current
* : Standard design value.
							(Continued)

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