Electrical Characteristics

Electrical Characteristics
(V_IN= 8V to 60V, T_A = -40°C to +105°C, unless otherwise noted. Typical values are at V_IN = 48V, C_OUT= 22μF, T_A= +25°C, R_IMON1= 3.01kΩ, R_IMON2= 3.01kΩ, R_DLY= 68kΩ (Note 1))
PARAMETER	SYMBOL	CONDITIONS		MIN	TYP	MAX	UNITS
POWER SUPPLY
IN Voltage Range	V_IN			8		60	V
Shutdown Input Current	I_SHDN	V_EN1= 0V, V_EN2 = 0V, V_IN= 48V			32	90	µA
Shutdown OUT Current	I_OFF	V_EN1 = V_EN2 = 0V; V_OUT= 0.1V;	T_A = +25°C	-2			µA
Supply Current	I_IN	V_IN = V_OUT= 48V,			0.88	1.5	mA
UVLO
UVLO Trip Level	V_UVLO	V_IN falling, UVLO trip point			7.1
UVLO Trip Level	V_UVLO	V_INrising			7.58	7.9	V
UVLO Hysteresis					500		mV
EN_
EN_ Input Logic-High	V_{EN_IH}			1.4			V
EN_ Input Logic-Low	V_{EN_IL}					0.4	V
EN_ Pullup Voltage	V_{EN_PUP}	EN_ pin unconnected, V_IN= 60V				2.35	V
EN_ Input Current	I_{EN_IN}	V_{EN_}= 5.5V		-1		+1	µA
EN_ Pullup Current	I_{EN_PUP}	V_{EN_}= 0.4V		1	4.5	12	μA
INTERNAL FETs
Internal FETs On-Resistance	R_DSON	V_IN≥ 10V, I_OUT = 100mA, T_A = +25ºC, TQFN Package			180		mΩ
Internal FETs On-Resistance	R_DSON	V_IN ≥ 10V, I_OUT = 100mA, T_A = +25ºC, WLP Package			140		mΩ
CURRENT LIMIT
Current Limit Range	I_LIM			0.5		1.5	A
Current Limit Accuracy	I_{LIM_ACC}	T_A = -40°C to 105°C	0.5A ≤ I_{LIM_ACC} ≤ 1.5A	-5		+5	%
Fast Current Limit Range	I_{LIM_F}	133% x I_LIM		0.66		2	A
Fast Current Limit Accuracy		0.66A ≤ I_{LIM_F}≤ 2A		-10		+10	%
Fast Current Limit Shut Down Time	T_{LIM_F}				200		ns
Average Inrush Current	I_INRUSH	During initial turn-on period, V_IN- V_OUT > 0.7V			28		mA
IMON_
IMON_ Reference	V_REF				1.125		V
Current-Mirror Output Ratio	C_IRATIO	0.05A ≤ I_OUT≤ 1.5A			4000		A/A
Current Sense Accuracy	I_{SENS_ACC}	T_A = -40°C to +105°C	0.05A ≤ I_{SENS_ACC} < 0.5A	-12.5		+12.5	%
Current Sense Accuracy	I_{SENS_ACC}	T_A = -40°C to +105°C	0.5A ≤ I_{SENS_ACC} ≤ 1.5A	-3		+3	%
IMON_ Leakage Current	I_{IMON_L}	V_EN1 = V_EN2 = 0V		-1		+1	μA
TIMING
Startup Watchdog Timeout	T_SU				250		ms
Switch Turn-On Time	T_{ON_SWITCH}	V_IN = 48V, C_OUT = 22μF			37		ms
IN Debounce Time	T_DEB	V_IN> V_{IN_UVLO} and EN = High			16		ms
Current Limit Delay Time	T_DELAY	R_DLY = 0		7	12	17	μs
		R_DLY = 28kΩ		80	110	130	μs
		R_DLY = 47.5kΩ		0.8	1	1.2	ms
		R_DLY = 68.1kΩ		8	10	12	ms
Auto-retry Time	T_RETRY				60 X T_DELAY		ms
ALRT
ALRT De-assertion Threshold	V_ALRT	Measured V_IN - V_OUT			2.1		V
ALRT Assertion Delay	T_ALRT	I_OUT reaches Current Limit			6		us
ALRT Output Low Voltage	V_{ALRT_OL}	Low-Impedance State, I_ALRT = 1mA				0.4	V
ALRT Output High Leakage Current	I_{ALRT_OH}	High-Impedance State, V_ALRT= 5.5V			1		uA
THERMAL PROTECTION
Thermal Shutdown	T_{J_MAX}				156		°C
Thermal-Shutdown Hysteresis					20		°C

Note 1:

All devices are 100% production tested at T_A= +25°C. Limits over the operating-temperature range are guaranteed by design; not production tested.

{"data-trigger":"hover","data-placement":"right","data-toggle":"popover","data-original-title":"\u003cstrong\u003eNote 1\u003c/strong\u003e","data-html":true,"data-content":"All devices are 100% production tested at TA = +25°C. Limits over the operating-temperature range are guaranteed by design; not production tested."}