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ZHCSAW6K March 2009 – April 2019 LM2840 , LM2841 , LM2842

PRODUCTION DATA.

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机械数据 (封装 | 引脚)

DDC|6
- MPDS124I

散热焊盘机械数据 (封装 | 引脚)

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6.5 Electrical Characteristics

Specifications are for T_J = 25°C unless otherwise specified. 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 = 12 V.⁽¹⁾⁽²⁾⁽³⁾

PARAMETER		TEST CONDITIONS		MIN	TYP	MAX	UNIT
I_Q	Quiescent current	SHDN = 0 V			16		µA
		SHDN = 0 V	T_J = −40°C to 125°C			40	µA
		Device ON, not switching			1.3		mA
		Device ON, not switching	T_J = −40°C to 125°C			1.75
		Device ON, no load			1.35
		Device ON, no load	T_J = −40°C to 125°C			1.85
R_DSON	Switch ON resistance	See ⁽⁴⁾			0.9		Ω
R_DSON	Switch ON resistance	See ⁽⁴⁾	T_J = −40°C to 125°C			1.6	Ω
I_LSW	Switch leakage current	V_IN = 42 V			0		µA
I_LSW	Switch leakage current	V_IN = 42 V	T_J = −40°C to 125°C			0.5	µA
I_CL	Switch current limit	LM2840⁽⁵⁾			525		mA
		LM2840⁽⁵⁾	T_J = −40°C to 125°C			900	mA
		LM2841⁽⁵⁾			525		mA
		LM2841⁽⁵⁾	T_J = −40°C to 125°C			900	mA
		LM2842⁽⁵⁾			1.15		A
		LM2842⁽⁵⁾	T_J = −40°C to 125°C			1.7	A
I_FB	Feedback pin bias current	LM284[0,1,2]⁽⁶⁾			0.1		µA
I_FB	Feedback pin bias current	LM284[0,1,2]⁽⁶⁾	T_J = −40°C to 125°C			1	µA
V_FB	FB Pin reference voltage				0.765		V
V_FB	FB Pin reference voltage		T_J = −40°C to 125°C	0.747		0.782	V
t_ON(min)	Minimum ON-time	See ⁽⁷⁾			100		ns
t_ON(min)	Minimum ON-time	See ⁽⁷⁾	T_J = −40°C to 125°C			150	ns
t_OFF(min)	Minimum OFF-time	X option			110		ns
		X option	T_J = −40°C to 125°C			370	ns
		Y option			104		ns
		Y option	T_J = −40°C to 125°C			200	ns
f_SW	Switching frequency	X option, V_FB = 0.5 V			550		kHz
		X option, V_FB = 0.5 V	T_J = −40°C to 125°C	325		750
		X option, V_FB = 0 V			140
		Y option, V_FB = 0.5 V			1.25		MHz
		Y option, V_FB = 0.5 V	T_J = −40°C to 125°C	0.95		1.5
		Y option, V_FB = 0 V			0.35
D_MAX	Maximum duty cycle	X option			94%
		X option	T_J = −40°C to 125°C	88%
		Y option			87%
		Y option	T_J = −40°C to 125°C	81%
V_UVP	Undervoltage lockout thresholds	On threshold			3.7		V
		On threshold	T_J = −40°C to 125°C	4.4
		Off threshold			3.5
		Off threshold	T_J = −40°C to 125°C			3.25
V_SHDN	Shutdown threshold	Device ON			1		V
		Device ON	T_J = −40°C to 125°C	2.3
		Device OFF			0.9
		Device OFF	T_J = −40°C to 125°C			0.3
I_SHDN	Shutdown pin input bias current	V_SHDN = 2.3 V⁽⁶⁾			0.05		µA
		V_SHDN = 2.3 V⁽⁶⁾	T_J = −40°C to 125°C			1.5
		V_SHDN = 0 V			0.02
		V_SHDN = 0 V	T_J = −40°C to 125°C			1.5

(1) All limits specified at room temperature (T_A= 25°C) unless otherwise noted. Room temperature limits are production tested. Limits at temperature extremes are ensured through correlation using standard Statistical Quality Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL).

(2) Typical numbers are at 25°C and represent the most likely norm.

(3) The part numbers in this table represent both the Q1 and non-Q1 versions of the respective parts.

(4) Includes the bond wires, R_DSON from V_IN pin to SW pin.

(5) Current limit at 0% duty cycle. May be lower at higher duty cycle or input voltages below 6 V.

(6) Bias currents flow into pin.

(7) Minimum ON-time specified by design and simulation.