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ZHCSIJ1E June 1999 – July 2018 LM2574 , LM2574HV

PRODUCTION DATA.

封裝選項

機械數(shù)據(jù) (封裝 | 引腳)

NPA|14
- MPDS386
P|8
- MPDI001B

散熱焊盤機械數(shù)據(jù) (封裝 | 引腳)

訂購信息

6.5 Electrical Characteristics for All Output Voltage Versions

T_J = 25°C, and MIN and MAX apply over full operating temperature range. V_IN = 12 V for the 3.3-V, 5-V, and adjustable version, V_IN = 25 V for the 12-V version, and V_IN = 30 V for the 15-V version, I_LOAD = 100 mA (unless otherwise noted).

PARAMETER		TEST CONDITIONS		MIN⁽¹⁾	TYP	MAX⁽¹⁾	UNIT
I_b	Feedback bias current	Adjustable version only, V_OUT = 5 V	T_J = 25°C		50	100	nA
I_b	Feedback bias current	Adjustable version only, V_OUT = 5 V	–40°C < T_J < 125°C			500	nA
f_O	Oscillator frequency	See⁽²⁾	T_J = 25°C	47	52	58	kHz
f_O	Oscillator frequency	See⁽²⁾	–40°C < T_J < 125°C	42		63	kHz
V_SAT	Saturation voltage	I_OUT = 0.5 A⁽³⁾	T_J = 25°C		0.9	1.2	V
V_SAT	Saturation voltage	I_OUT = 0.5 A⁽³⁾	–40°C < T_J < 125°C			1.4	V
DC	Maximum duty cycle (ON)	See⁽⁴⁾		93%	98%
I_CL	Current limit	Peak current⁽²⁾⁽³⁾		0.7	1	1.6	A
I_CL	Current limit	Peak current⁽²⁾⁽³⁾		0.65		1.8	A
I_L	Current output leakage	Output = 0 V				2	mA
I_L	Current output leakage	Output = –1 V⁽⁵⁾⁽⁶⁾			7.5	30	mA
I_Q	Quiescent current	See⁽⁵⁾			5	10	mA
I_STBY	Standby quiescent current	ON/OFF pin = 5 V (OFF)			50	200	μA
ON/OFF CONTROL (SEE Figure 27)
V_IH	ON/OFF pin logic input level	V_OUT = 0 V	T_J = 25°C	2.2	1.4		V
V_IH		V_OUT = 0 V	–40°C < T_J < 125°C	2.4			V
V_IL		V_OUT = Nominal output voltage	T_J = 25°C		1.2	1	V
V_IL		V_OUT = Nominal output voltage	–40°C < T_J < 125°C			0.8	V
I_H	ON/OFF pin input current	ON/OFF pin = 5 V (OFF)			12	30	μA
I_IL	ON/OFF pin input current	ON/OFF pin = 0 V (ON)			0	10	μA

(1) All limits specified at room temperature TYP and MAX. All room temperature limits are 100% production tested. All limits at temperature extremes are specified through correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level.

(2) The oscillator frequency reduces to approximately 18 kHz in the event of an output short or an overload which causes the regulated output voltage to drop approximately 40% from the nominal output voltage. This self protection feature lowers the average power dissipation of the IC by lowering the minimum duty cycle from 5% down to approximately 2% (see Figure 6).

(3) Output pin sourcing current. No diode, inductor or capacitor connected to output pin.

(4) Feedback pin removed from output and connected to 0 V.

(5) Feedback pin removed from output and connected to 12 V for the adjustable, 3.3-V, and 5-V versions, and 25 V for the 12-V and 15-V versions, to force the output transistor OFF.

(6) V_IN = 40 V (60 V for high voltage version).