LM2576-12BU TR

Obsolete

Microchip Technology

IC REG BUCK 12V 3A TO263-5

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LM2576-12BU TR

Obsolete

Microchip Technology

IC REG BUCK 12V 3A TO263-5

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Description Specifications Series Pricing CAD Documents

Description

General part information

LM2576 Series

The LM2576 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, or 12V fixed output. Adjustable versions have an output voltage range from 1.23V to 37V. Both versions are capable of driving a 3A 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 LM2576 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.

Technical Specifications

Parameters and characteristics for this part

Specification	LM2576-12BU TR

Current - Output	3 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	Fixed
Package Leads	5 Leads
Package Name	D2PAK, TO-263-5
Synchronous Rectifier	No
Topology	Buck
Voltage - Input (Max)	40 V
Voltage - Input (Min)	4 V
Voltage - Output (Min/Fixed)	12 V

LM2576 Series

3A Step-Down SMPS Regulator

Part	Topology	Voltage - Input (Max)	Synchronous Rectifier	Function	Operating Temperature (Max)	Operating Temperature (Min)	Output Type	Voltage - Output (Min/Fixed)	Current - Output	Package Name	Voltage - Input (Min)	Package Leads	Mounting Type	Number of Outputs	Output Configuration	Frequency - Switching	Package / Case	Voltage - Output (Max)
Microchip Technology LM2576-5.0WU-TR	Buck	40 V	No	Step-Down	125 °C	-40 °C	Fixed	5 V	3 A	D2PAK TO-263-5	4 V	5 Leads	Surface Mount	1	Positive	52 kHz
Microchip Technology LM2576-12BT	Buck	40 V	No	Step-Down	125 °C	-40 °C	Fixed	12 V	3 A	TO-220-5	4 V		Through Hole	1	Positive	52 kHz	TO-220-5
Microchip Technology LM2576-3.3BU	Buck	40 V	No	Step-Down	125 °C	-40 °C	Fixed	3.3 V	3 A	D2PAK TO-263-5	4 V	5 Leads	Surface Mount	1	Positive	52 kHz
Microchip Technology LM2576BU	Buck	40 V	No	Step-Down	125 °C	-40 °C	Adjustable	1.23 V	3 A	D2PAK TO-263-5	4 V	5 Leads	Surface Mount	1	Positive	52 kHz		37 V
Microchip Technology LM2576-3.3BT	Buck	40 V	No	Step-Down	125 °C	-40 °C	Fixed	3.3 V	3 A	TO-220-5	4 V		Through Hole	1	Positive	52 kHz	TO-220-5
Microchip Technology LM2576-5.0BU	Buck	40 V	No	Step-Down	125 °C	-40 °C	Fixed	5 V	3 A	D2PAK TO-263-5	4 V	5 Leads	Surface Mount	1	Positive	52 kHz
Microchip Technology LM2576-12WT	Buck	40 V	No	Step-Down	125 °C	-40 °C	Fixed	12 V	3 A	TO-220-5	4 V		Through Hole	1	Positive	52 kHz	TO-220-5
Microchip Technology LM2576-3.3WU	Buck	40 V	No	Step-Down	125 °C	-40 °C	Fixed	3.3 V	3 A	D2PAK TO-263-5	4 V	5 Leads	Surface Mount	1	Positive	52 kHz
Microchip Technology LM2576-12BU TR	Buck	40 V	No	Step-Down	125 °C	-40 °C	Fixed	12 V	3 A	D2PAK TO-263-5	4 V	5 Leads	Surface Mount	1	Positive	52 kHz
Microchip Technology LM2576-3.3WT	Buck	40 V	No	Step-Down	125 °C	-40 °C	Fixed	3.3 V	3 A	TO-220-5	4 V		Through Hole	1	Positive	52 kHz	TO-220-5

Pricing

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

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LM2576-12BU TR | Datasheet