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ZHCSNR6G June 1999 – March 2023 LM2576 , LM2576HV

PRODUCTION DATA

封裝選項

請參考 PDF 數(shù)據(jù)表獲取器件具體的封裝圖。

機械數(shù)據(jù) (封裝 | 引腳)

NDH|5
NEB|5
KTT|5
KC|5

散熱焊盤機械數(shù)據(jù) (封裝 | 引腳)

KTT|5
- PPTD277

訂購信息

6.10 Electrical Characteristics: All Output Voltage Versions

over operating free-air temperature range (unless otherwise noted)

PARAMETER		TEST CONDITIONS		MIN	TYP⁽¹⁾	MAX	UNIT
SYSTEM PARAMETERS TEST CIRCUIT Figure 8-3 and Figure 8-9 ⁽²⁾
I_b	Feedback Bias Current	V_OUT = 5 V (Adjustable Version Only)	T_J = 25°C	100	50		nA
I_b	Feedback Bias Current	V_OUT = 5 V (Adjustable Version Only)	Applies over full operating temperature range	500			nA
f_O	Oscillator Frequency⁽⁷⁾	T_J = 25°C		47	52	58	kHz
f_O	Oscillator Frequency⁽⁷⁾	Applies over full operating temperature range		42		63	kHz
V_SAT	Saturation Voltage	I_OUT = 3 A ⁽³⁾	T_J = 25°C		1.4	1.8	V
V_SAT	Saturation Voltage	I_OUT = 3 A ⁽³⁾	Applies over full operating temperature range			2	V
DC	Max Duty Cycle (ON)⁽⁴⁾			93%	98%
I_CL	Current Limit⁽³⁾⁽⁷⁾	T_J = 25°C		4.2	5.8	6.9	A
I_CL	Current Limit⁽³⁾⁽⁷⁾	Applies over full operating temperature range		3.5		7.5	A
I_L	Output Leakage Current	Output = 0 V Output = ?1 V Output = ?1 V ⁽⁵⁾⁽⁶⁾		2	7.5	30	mA
I_Q	Quiescent Current⁽⁵⁾				5	10	mA
I_STBY	Standby Quiescent Current	ON /OFF Pin = 5 V (OFF)			50	200	μA
ON /OFF CONTROL TEST CIRCUIT Figure 8-3 and Figure 8-9
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	Applies over full operating temperature range	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	Applies over full operating temperature range			0.8	V
I_IH	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 (25°C) unless otherwise noted. All room temperature limits are 100% production tested. All limits at temperature extremes are specified through correlation using standard Statistical Quality Control (SQC) methods.

(2) External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the LM2576/LM2576HV is used as shown in Figure 8-3 and Figure 8-9, system performance is as shown in Section 6.10.

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

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

(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).

(7) The oscillator frequency reduces to approximately 11 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%.