SNVU768 December 2021 LM63440-Q1 , LM63460-Q1 , LM64440-Q1 , LM64460-Q1

2 EVM Performance Specifications

Unless otherwise indicated, V_IN = 13.5 V, V_OUT = 5 V, I_OUT = 6 A and F_SW = 2.1 MHz

Table 2-1 Electrical Performance Specifications

PARAMETER	TEST CONDITIONS		MIN	TYP	MAX	UNIT
INPUT CHARACTERISTICS
Input voltage range, V_IN	Operating		5.5		36	V
Input voltage turn-on, V_IN(on)	Adjusted using EN divider resistors			4.5
Input voltage turn-off, V_IN(off)				3.2
Input voltage hysteresis, V_IN(hys)				1.3
Input current, disabled, I_IN(off)	V_EN = 0 V (with 255-kΩ and 100-kΩ EN divider)			39		µA
OUTPUT CHARACTERISTICS
Output voltage, V_OUT⁽¹⁾	Adjustable from 1 V to 95% VIN		4.95	5.0	5.05	V
Output current, I_OUT	V_IN = 6 V to 36 V ⁽²⁾		0		6	A
Output voltage regulation, ΔV_OUT	Load regulation	I_OUT = 0 A to 6 A		0.1%
Output voltage regulation, ΔV_OUT	Line regulation	V_IN = 6 V to 36 V		0.1%
Output voltage ripple, V_OUT(AC)				25		mVrms
Output overcurrent protection, I_OUT(OCP)				8.5		A
SYSTEM CHARACTERISTICS
Default switching frequency, F_SW(nom)	Adjustable from 200 kHz to 2.2 MHz (with suitable choice of buck inductance and input/ouptut capacitance at lower F_SW)			2.1		MHz
Efficiency, η⁽¹⁾	V_IN = 8 V	I_OUT = 3 A		95%
	V_IN = 8 V	I_OUT = 6 A		92%
	V_IN = 13.5 V	I_OUT = 3 A		94.5%
	V_IN = 13.5 V	I_OUT = 6 A		92.5%
	V_IN = 18 V	I_OUT = 3 A		93%
	V_IN = 18 V	I_OUT = 6 A		91.7%
	V_IN = 24 V	I_OUT = 3 A		91.4%
	V_IN = 24 V	I_OUT = 6 A		90.6%
Thermal impedance, R_θJA				23		°C/W
Junction temperature, T_J			–40		150	°C

(1) The default output voltage and switching frequency of this EVM are 5 V and 2.1 MHz, respectively. The BIAS pin connects to the output for output voltages of 3.3 V and above. Efficiency and other performance metrics can change based on operating input voltage, load current, switching frequency, external bias voltage, ambient temperature, externally connected output capacitance, and other parameters.

(2) The recommended airflow is 200 LFM when operating at output currents greater than 4 A.