Specification	LM2575-12WU

Current - Output	1 A
Frequency - Switching	52 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	1.81 mOhm
Package / Case	TO-263-6, TO-263BA, D2PAK (5 Leads + Tab)
Supplier Device Package	TO-263-5
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Min) [Min]	4 V
Voltage - Output (Min/Fixed)	12 V

LM2575 Series

Part	Current - Output	Output Configuration	Mounting Type	Package / Case [custom]	Package / Case	Package / Case [custom]	Function	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Output (Min/Fixed)	Voltage - Output (Max)	Topology	Supplier Device Package	Output Type	Frequency - Switching	Number of Outputs	Voltage - Input (Min) [Min]	Output Type	Package / Case	Package / Case
Microchip Technology LM2575YWM	1 A	Positive	Surface Mount	7.5 mm	24-SOIC	0.295 in	Step-Down	-40 °C	125 ¯C	1.23 V	37 V	Buck	24-SOIC	Adjustable	52 kHz	1	4 V
Microchip Technology LM2575-12YWM	1 A	Positive	Surface Mount	7.5 mm	24-SOIC	0.295 in	Step-Down	-40 °C	125 ¯C	12 V		Buck	24-SOIC		52 kHz	1	4 V	1.81 mOhm
Microchip Technology LM2575-3.3BN	1 A	Positive	Through Hole		16-DIP		Step-Down	-40 °C	125 ¯C	3.3 V		Buck	16-DIP		52 kHz	1	4 V	1.81 mOhm	0.3 in	7.62 mm
Microchip Technology LM2575-5.0WU-TR	1 A	Positive	Surface Mount		D2PAK (5 Leads + Tab) TO-263-6 TO-263BA		Step-Down	-40 °C	125 ¯C	5 V		Buck	TO-263-5		52 kHz	1	4 V	1.81 mOhm
Microchip Technology LM2575-3.3BT	1 A	Positive	Through Hole		TO-220-5		Step-Down	-40 °C	125 ¯C	3.3 V		Buck	TO-220-5		52 kHz	1	4 V	1.81 mOhm
Microchip Technology LM2575-5.0WT	1 A	Positive	Through Hole		TO-220-5		Step-Down	-40 °C	125 ¯C	5 V		Buck	TO-220-5		52 kHz	1	4 V	1.81 mOhm
Microchip Technology LM2575-5.0BU	1 A	Positive	Surface Mount		D2PAK (5 Leads + Tab) TO-263-6 TO-263BA		Step-Down	-40 °C	125 ¯C	5 V		Buck	TO-263-5		52 kHz	1	4 V	1.81 mOhm
Microchip Technology LM2575-5.0BWM	1 A	Positive	Surface Mount	7.5 mm	24-SOIC	0.295 in	Step-Down	-40 °C	125 ¯C	5 V		Buck	24-SOIC		52 kHz	1	4 V	1.81 mOhm
Microchip Technology LM2575WU	1 A	Positive	Surface Mount		D2PAK (5 Leads + Tab) TO-263-6 TO-263BA		Step-Down	-40 °C	125 ¯C	1.23 V	37 V	Buck	TO-263-5	Adjustable	52 kHz	1	4 V
Microchip Technology LM2575-12WU	1 A	Positive	Surface Mount		D2PAK (5 Leads + Tab) TO-263-6 TO-263BA		Step-Down	-40 °C	125 ¯C	12 V		Buck	TO-263-5		52 kHz	1	4 V	1.81 mOhm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 1.75
		25	$ 1.46
		100	$ 1.33
Microchip Direct	TUBE	1	$ 1.75
		25	$ 1.46
		100	$ 1.33
		1000	$ 1.28
		5000	$ 1.27
		10000	$ 1.26
Newark	Each	100	$ 1.37

Description

General part information

LM2575 Series

The LM2575 series of monolithic integrated circuits provide all the active functions for a step-down (buck) switching regulator. Fixed versions are available with a 3.3V, 5V, 12V, or 15V fixed output. Adjustable versions have an output voltage range from 1.23V to 37V. Both versions are capable of driving a 1A load with excellent line and load regulation.

These regulators are simple to use because they require a minimum number of external components and include internal frequency compensation and a fixed-frequency oscillator.

The LM2575 series offers a high efficiency replacement for popular three-terminal adjustable linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required.

Documents

Technical documentation and resources

LM2575 - 52 kHz Simple 1A Buck Regulator

Data Sheets

Product Change Notice EN

Datasheet