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ZHCSMO2A June 2022 – November 2022 LMR51430

PRODUCTION DATA

封裝選項(xiàng)

機(jī)械數(shù)據(jù) (封裝 | 引腳)

DDC|6
- MPDS124I

散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)

訂購信息

7.5 Electrical Characteristics

Limits apply over operating junction temperature (T_J) range of –40°C to +150°C, unless otherwise stated. Minimum and maximum limits(1) are specified through test, design or statistical correlation. Typical values represent the most likely parametric norm at T_J = 25°C, and are provided for reference purposes only. Unless otherwise stated, the following conditions apply: V_IN = 4.5 V to 36 V.

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
SUPPLY
I_Q(VIN)	VIN quiescent current (non-switching)⁽²⁾	V_EN= 3 V, PFM variant only		40	65	μA
I_SD(VIN)	VIN shutdown supply current	V_EN = 0 V		3	15	μA
UVLO
VIN_UVLO(R)	VIN UVLO rising threshold	V_IN rising		3.89	4.5	V
VIN_UVLO(F)	VIN UVLO falling threshold	V_IN falling	3.35	3.58		V
VIN_UVLO(H)	VIN UVLO hysteresis			0.3		V
ENABLE
V_EN(R)	EN voltage rising threshold	EN rising, enable switching	1.1	1.227	1.36	V
V_EN(F)	EN voltage falling threshold	EN falling, disable switching	0.95	1.08	1.22	V
I_EN(P2)	EN pin sourcing current post EN rising threshold	V_EN= 3 V		10	200	nA
REFERENCE VOLTAGE
Vfb	Reference voltage		0.591	0.6	0.609	V
I_FB(LKG)	FB input leakage current	V_FB= 1.2 V		0.8	50	nA
SWITCHING FREQUENCY
f_SW1(CCM)	Switching frequency, CCM operation	500-kHz trim option	450	500	560	kHz
f_SW2(CCM)	Switching frequency, CCM operation	1.1-MHz trim option	0.95	1.1	1.25	MHz
STARTUP
t_SS	Internal fixed soft-start time		3.2	4.0	5.4	ms
POWER STAGE
R_DSON(HS)	High-side MOSFET on-resistance	T_J = 25℃		0.12		Ω
R_DSON(LS)	Low-side MOSFET on-resistance	T_J = 25℃		0.07		Ω
t_ON(min)	Minimum ON pulse width	V_IN = 12 V, I_OUT = 3 A		70		ns
t_ON(max)	Maximum ON pulse width	V_IN = 12 V, I_OUT = 3 A		6.76		μs
t_OFF(min)	Minimum OFF pulse width	V_IN = 4.5 V		150		ns
OVERCURRENT PROTECTION
I_{HS_PK(OC)}	High-side peak current limit⁽³⁾	LM51430	3.67	4.76	6.68	A
I_{LS_V(OC)}	Low-side valley current limit⁽³⁾	LM51430	2.75	3.5	4.2	A
I_LS(NOC)	Low-side negative current limit	LM51430 FPWM Only		–1.6		A
I_ZC	Zero-cross detection current threshold			0.02		A
THERMAL SHUTDOWN
T_J(SD)	Thermal shutdown threshold(4)	Temperature rising		163		°C
T_J(HYS)	Thermal shutdown hysteresis(4)			22		°C

(1) MIN and MAX limits are 100% production tested at 25℃. Limits over the operating temperature range verified through correlation using Statistical Quality Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL).

(2) This is the current used by the device open loop. It does not represent the total input current of the system when in regulation.

(3) The current limit values in this table are tested, open loop, in production. They may differ from those found in a closed loop application

(4) Specified by design