Fujitsu MB3887 manual Electrical Characteristics

MB3887
■ ELECTRICAL CHARACTERISTICS
				(Ta = +25 °C, VCC = 19 V, VCC (O) = 19 V, VREF = 0 mA)
Parameter		Sym-	Pin	Conditions		Value		Unit
		bol	No.		Min	Typ	Max
	Output voltage	VREF1	6 Ta = +25 °C		4.967	5.000	5.041	V
		VREF2	6 Ta = −10 °C to +85 °C		4.95	5.00	5.05	V
1.
			6 VCC = 8 V to 25 V		
Reference	Input stability	Line				3	10	mV
voltage block	Load stability	Load	6 VREF = 0 mA to −1 mA			1	10	mV
[REF]
	Short-circuit output
		Ios	6 VREF = 1 V		−50	−25	−12	mA
	current
		VTLH	18	VCC = VCC (O) ,	6.2	6.4	6.6	V
				VCC =
	Threshold voltage
2.				VCC = VCC (O) ,
		VTHL	18		5.2	5.4	5.6	V
Under voltage
				VCC =
lockout protec-
	Hysteresis width	VH	18 VCC = VCC (O)			1.0*		V
tion circuit
block	Threshold voltage	VTLH	6	VREF =	2.6	2.8	3.0	V
[UVLO]		VTHL	6	VREF =	2.4	2.6	2.8	V
	Hysteresis width	VH	6			0.2		V
3.					−14	−10	−6	∝A
Soft-start block	Charge current	ICS	22
[SOFT]
4.	Oscillation	fOSC	20 RT = 47 kΩ		260	290	320	kHz
Triangular	frequency
waveform os-	Frequency
cillator circuit		Δf/fdt	20 Ta = −30 °C to +85 °C					%
	temperature					1*
block
	stability
[OSC]
	Input offset voltage	VIO	3, 4,	FB1 = FB2 = 2 V		1	5	mV
			8, 9
	Input bias current	IB	3, 4,		−100	−30		nA
			8, 9
	In-phase input	VCM	3, 4,		0		VCC − 1.8	V
5-1.	voltage range		8, 9
Error amplifier	Voltage gain	AV	5, 7	DC		100*		dB
block	Frequency		5, 7 AV = 0 dB				
[Error Amp1,		BW				2*		MHz
	bandwidth
Error Amp2]
		VFBH	5, 7		4.7	4.9		V
	Output voltage
		VFBL	5, 7			20	200	mV
	Output source	ISOURCE	5, 7 FB1 = FB2 = 2 V			−2	−1	mA
	current
	Output sink current	ISINK	5, 7 FB1 = FB2 = 2 V		150	300		∝A

* : Standard design value.

(Continued)

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