Texas Instruments TPS54810 warranty Electrical Characteristics

	www.ti.com								TPS54810
						SLVS420B − MARCH 2002 − R EVISED FEBRUARY 2005
ELECTRICAL CHARACTERISTICS
TJ = −40°C to 125°C, VI = 4 V to 6 V unless otherwise noted
	PARAMETER		TEST CONDITIONS				MIN	TYP	MAX	UNIT
SUPPLY VOLTAGE, VIN
	Input voltage range, VIN						4.0		6.0	V
		fs = 350 kHz, SYNC ≤ 0.8 V, RT open,						11	15.8
		PH pin open
I(Q)	Quiescent current	fs = 550 kHz, SYNC ≥ 2.5 V, RT open,						16	23.5	mA
		PH pin open
		Shutdown, SS/ENA = 0 V						1.0	1.4
UNDER VOLTAGE LOCK OUT
	Start threshold voltage, UVLO							3.8	3.85	V
	Stop threshold voltage, UVLO						3.40	3.50		V
	Hysteresis voltage, UVLO						0.14	0.16		V
	Rising and falling edge deglitch, UVLO (1)							2.5		∝s
BIAS VOLTAGE
	Output voltage, VBIAS	I(VBIAS) = 0					2.70	2.80	2.90	V
	Output current, VBIAS (2)								100	∝A
CUMULATIVE REFERENCE
Vref	Accuracy						0.882	0.891	0.900	V
REGULATION
	Line regulation(1) (3)	IL = 4 A,	fs = 350 kHz,		TJ = 85°C				0.04	%/V
		IL = 4 A,	fs = 550 kHz,		TJ = 85°C				0.04
	Load regulation(1) (3)	IL = 0 A to 8 A, fs = 350 kHz,				TJ = 85°C			0.03	%/A
		IL = 0 A to 8 A, fs = 550 kHz,				TJ = 85°C			0.03
OSCILLATOR
	Internally set—free running frequency range	SYNC ≤ 0.8 V,		RT open			280	350	420	kHz
		SYNC ≥ 2.5 V,		RT open			440	550	660
		RT = 180 kΩ (1% resistor to AGND)					252	280	308
	Externally set—free running frequency range	RT = 100 kΩ (1% resistor to AGND)					460	500	540	kHz
		RT = 68 kΩ (1% resistor to AGND)					663	700	762
	High level threshold, SYNC						2.5			V
	Low level threshold, SYNC								0.8	V
	Pulse duration, external sychronization, SYNC (1)						50			ns
	Frequency range, SYNC (1)						330		700	kHz
	Ramp valley (1)							0.75		V
	Ramp amplitude (peak-to-peak) (1)							1		V
	Minimum controllable on time (1)								200	ns
	Maximum duty cycle (1)						90%

(1)Specified by design

(2)Static resistive loads only

(3)Specified by the circuit used in Figure 9

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