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ZHCSN38D October 2021 – April 2024 LMR54406 , LMR54410

PRODUCTION DATA

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- MPDS026Q

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6.5 Electrical Characteristics

Limits apply over operating junction temperature (T_J ) range of –40°C to +150°C, unless otherwise stated. Minimum and Maximum limits 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 V to 36 V.

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
SUPPLY VOLTAGE (VIN PIN)
V_{IN_UVLO}	Undervoltage lockout thresholds	Rising threshold	3.55	3.75	4	V
		Falling threshold	3.25	3.45	3.65	V
		Hysteresis		0.3		V
I_Q-nonSW	Operating quiescent current (non-switching)⁽¹⁾	V_EN= 3.3 V, VFB=1.1V (PFM variant only)		80	120	µA
I_SD	Shutdown quiescent current; measured at VIN pin	V_EN= 0 V		3	10	µA
ENABLE (EN PIN)
V_EN-VOUT-H	Enable input high-level for V_OUT	V_ENABLE rising	1.1	1.23	1.36	V
V_EN-VOUT-L	Enable input low-level for V_OUT	V_ENABLE falling	0.95	1.1	1.22	V
V_EN-VOUT-HYS	Enable input hysteresis for V_OUT	Hysteresis		130		mV
I_LKG-EN	Enable input leakage current	V_EN = 3.3V		10	200	nA
VOLTAGE REFERENCE (FB PIN)
V_FB	Feedback voltage		0.79	0.8	0.81	V
I_LKG-FB	Feedback leakage current	FB = 1.2 V		0.2		nA
SWITCHING FREQUENCY
F_OSC	Internal oscillator frequency		0.935	1.1	1.265	MHz
CURRENT LIMITS AND HICCUP
I_SC	High-side current limit⁽²⁾	LMR54410	1.25	1.6	1.9	A
I_LS-LIMIT	Low-side current limit⁽²⁾	LMR54410	.9	1.1	1.3	A
I_SC	High-side current limit⁽²⁾	LMR54406	.85	1.1	1.3	A
I_LS-LIMIT	Low-side current limit⁽²⁾	LMR54406	.65	0.8	.95	A
I_L-ZC	Zero cross detector threshold	PFM variants only		0.02		A
MOSFETS
R_DS-ON-HS	High-side MOSFET ON-resistance	T_J=25 ℃, V_IN = 12 V		450		mΩ
R_DS-ON-LS	Low-side MOSFET ON-resistance	T_J=25 ℃, V_IN = 12 V		240		mΩ
THERMAL SHUTDOWN
T_SD-Rising	Thermal shutdown	Shutdown threshold		170		°C
T_SD-Falling	Thermal shutdown	Recovery threshold		158		°C

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

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