米6体育平台手机版

ZHCSHQ3F August 2017 – November 2020 LMR33630

PRODUCTION DATA

7.7 System Characteristics

The following specifications apply to a typical applications circuit, with nominal component values. Specifications in the typical (TYP) column apply to T_J = 25°C only. Specifications in the minimum (MIN) and maximum (MAX) columns apply to the case of typical components over the temperature range of T_J = –40°C to 125°C. These specifications are not ensured by production testing.

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
V_IN	Operating input voltage range	V_OUT = 3.3 V, I_OUT= 0 A	3.8		36	V
V_OUT	Output voltage regulation for V_OUT = 5 V⁽¹⁾	V_OUT = 5 V, V_IN = 7 V to 36 V, I_OUT = 0 A to max. load	–1.5%		2.5%
	Output voltage regulation for V_OUT = 5 V⁽¹⁾	V_OUT = 5 V, V_IN = 7 V to 36 V, I_OUT = 1 A to max. load	–1.5%		1.5%
	Output voltage regulation for V_OUT = 3.3 V⁽¹⁾	V_OUT = 3.3 V, V_IN = 3.8 V to 36 V, I_OUT = 0 A to max. load	–1.5%		2.5%
	Output voltage regulation for V_OUT = 3.3 V⁽¹⁾	V_OUT = 3.3 V, V_IN = 3.8 V to 36 V, I_OUT = 1 A to max. load	–1.5%		1.5%
I_SUPPLY	Input supply current when in regulation	V_IN = 12 V, V_OUT = 3.3 V, I_OUT = 0 A, R_FBT = 1 MΩ		25		µA
V_DROP	Dropout voltage; (V_IN – V_OUT)	V_OUT = 5 V, I_OUT = 1A Dropout at –1% of regulation, ƒ_SW = 140 kHz		150		mV
D_MAX	Maximum switch duty cycle⁽²⁾	V_IN = V_OUT = 12 V, I_OUT = 1 A		98%
V_HC	FB pin voltage required to trip short-circuit hiccup mode			0.4		V
t_HC	Time between current-limit hiccup burst			94		ms
t_D	Switch voltage dead time			2		ns
T_SD	Thermal shutdown temperature	Shutdown temperature		165		°C
T_SD	Thermal shutdown temperature	Recovery temperature		148		°C

(1) Deviation is with respect to V_IN =12 V, I_OUT = 1 A.

(2) In dropout the switching frequency drops to increase the effective duty cycle. The lowest frequency is clamped at approximately: ƒ_MIN = 1 / (t_ON-MAX + t_OFF-MIN). D_MAX = t_ON-MAX /(t_ON-MAX + t_OFF-MIN).