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SLVS503F November 2003 – February 2020 TPS2490 , TPS2491

PRODUCTION DATA.

封裝選項(xiàng)

請(qǐng)參考 PDF 數(shù)據(jù)表獲取器件具體的封裝圖。

機(jī)械數(shù)據(jù) (封裝 | 引腳)

DGS|10

散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)

訂購信息

6.5 Electrical Characteristics

unless otherwise noted, minimum and maximum limits apply across the recommended operating junction temperature and voltage range, V_TIMER = 0 V, and all outputs unloaded; typical specifications are at T_J = 25°C, V_VCC = 48 V, V_TIMER = 0 V, and all outputs unloaded; positive currents are into pins.

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
SUPPLY CURRENT (VCC)
	Enabled	V_EN = Hi, V_SENSE = V_OUT = V_VCC		450	1000	µA
	Disabled	V_EN = Lo, V_SENSE = V_VCC = V_OUT		90	250	µA
CURRENT SENSE INPUT (SENSE)
I_SENSE	Input bias current	V_SENSE = V_VCC, V_OUT = V_VCC		7.5	20	µA
REFERENCE VOLTAGE OUTPUT (VREF)
V_REF	Reference voltage	0 < I_VREF < 1 mA	3.9	4	4.1	V
POWER LIMITING INPUT (PROG)
I_PROG	Input bias current, device enabled, sourcing or sinking	0 < V_PROG < 4 V, V_EN = 48 V			5	µA
R_PROG	Pulldown resistance, device disabled	I_PROG = 200 µA, V_EN = 0 V		375	600	Ω
POWER LIMITING AND CURRENT LIMITING (SENSE)
V_CL	Current sense threshold V_(VCC-SENSE) with power limiting trip	V_PROG = 2.4 V, V_OUT = 0 V or V_PROG = 0.9 V, V_OUT = 30 V, V_VCC = 48 V	17	25	33	mV
V_SENSE	Current sense threshold V_(VCC-SENSE) without power limiting trip	V_PROG = 4 V, V_SENSE = V_OUT	45	50	55	mV
TIMER OPERATION (TIMER)
	Charge current (sourcing)	V_TIMER = 0 V	15	25	34	µA
	Charge current (sourcing)	V_TIMER = 0 V, T_J = 25°C	20	25	30	µA
	Discharge current (sinking)	V_TIMER = 5 V	1.5	2.5	3.7	µA
	Discharge current (sinking)	V_TIMER = 5 V, T_J = 25°C	2.1	2.5	3.1	µA
	TIMER upper threshold voltage		3.9	4	4.1	V
	TIMER lower reset threshold voltage	TPS2491 only	0.96	1	1.04	V
D_RETRY	Fault retry duty cycle	TPS2491 only	0.5%	0.75%	1%
GATE DRIVE OUTPUT (GATE)
I_GATE	GATE sourcing current	V_SENSE = V_VCC, V_(GATE-OUT) = 7 V, V_EN = Hi	15	22	35	µA
	GATE sinking current	V_EN = Lo, V_GATE = V_VCC	1.8	2.4	2.8	mA
	GATE sinking current	V_EN = Hi, V_GATE = V_VCC, V_(VCC-SENSE) ≥ 200 mV	75	125	250	mA
	GATE output voltage, V_(GATE-OUT)		12		16	V
POWER GOOD OUTPUT (PG)
V_{PG_L}	Low voltage (sinking)	I_PG = 2 mA		0.1	0.25	V
V_{PG_L}	Low voltage (sinking)	I_PG = 4 mA		0.25	0.5	V
V_PGTL	PG threshold voltage, V_OUT rising, PG goes open drain	V_SENSE = V_VCC, measure V_(VCC-OUT)	0.8	1.25	1.7	V
VPGTH	PG threshold voltage, V_OUT falling, PG goes low	V_SENSE = V_VCC, measure V_(VCC-OUT)	2.2	2.7	3.2	V
ΔV_PGT	PG threshold hysteresis voltage, V_(SENSE-OUT)	V_SENSE = V_VCC		1.4		V
	Leakage current, PG false, open drain				10	µA
OUTPUT VOLTAGE FEEDBACK INPUT (OUT)
I_OUT	Bias current	V_OUT = V_VCC, V_EN = Hi, sinking		8	20	µA
I_OUT	Bias current	V_OUT = GND, V_EN = Lo, sourcing		18	40	µA
ENABLE INPUT (EN)
V_{EN_H}	Threshold, V_EN going high		1.32	1.35	1.38	V
V_{EN_L}	Threshold, V_EN going low		1.22	1.25	1.28	V
	V_EN hysteresis			100		mV
	Leakage current	V_EN = 48 V			1	µA
INPUT SUPPLY UVLO (VCC)
	V_VCC turn on	Rising		8.4	8.8	V
	V_VCC turn off	Falling	7.5	8.3		V
	Hysteresis			75		mV