Specification	MIC4576WU

Current - Output	3 A
Frequency - Switching	200 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	TO-263-6, TO-263BA, D2PAK (5 Leads + Tab)
Supplier Device Package	TO-263-5
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Max) [Max]	36 V
Voltage - Input (Min) [Min]	4 V
Voltage - Output (Max) [Max]	33 V
Voltage - Output (Min/Fixed)	1.23 V

MIC4576 Series

200kHz 3.0A Step-down Regulator

Part	Current - Output	Output Configuration	Topology	Voltage - Input (Max) [Max]	Supplier Device Package	Package / Case	Number of Outputs	Voltage - Input (Min) [Min]	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Output (Min/Fixed)	Frequency - Switching	Mounting Type	Output Type	Function	Output Type	Voltage - Output (Max) [Max]
Microchip Technology MIC4576-3.3WT	3 A	Positive	Buck	36 V	TO-220-5	TO-220-5	1	4 V	85 °C	-40 °C	3.3 V	200 kHz	Through Hole	1.81 mOhm	Step-Down
Microchip Technology MIC4576-5.0WT	3 A	Positive	Buck	36 V	TO-220-5	TO-220-5	1	4 V	85 °C	-40 °C	5 V	200 kHz	Through Hole	1.81 mOhm	Step-Down
Microchip Technology MIC4576-5.0BU TR	3 A	Positive	Buck	36 V	TO-263-5	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1	4 V	85 °C	-40 °C	5 V	200 kHz	Surface Mount	1.81 mOhm	Step-Down
Microchip Technology MIC4576-3.3BU TR	3 A	Positive	Buck	36 V	TO-263-5	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1	4 V	85 °C	-40 °C	3.3 V	200 kHz	Surface Mount	1.81 mOhm	Step-Down
Microchip Technology MIC4576-3.3BT	3 A	Positive	Buck	36 V	TO-220-5	TO-220-5	1	4 V	85 °C	-40 °C	3.3 V	200 kHz	Through Hole	1.81 mOhm	Step-Down
Microchip Technology MIC4576-3.3BU	3 A	Positive	Buck	36 V	TO-263-5	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1	4 V	85 °C	-40 °C	3.3 V	200 kHz	Surface Mount	1.81 mOhm	Step-Down
Microchip Technology MIC4576BU	3 A	Positive	Buck	36 V	TO-263-5	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1	4 V	85 °C	-40 °C	1.23 V	200 kHz	Surface Mount		Step-Down	Adjustable	33 V
Microchip Technology MIC4576WT	3 A	Positive	Buck	36 V	TO-220-5	TO-220-5	1	4 V	85 °C	-40 °C	1.23 V	200 kHz	Through Hole		Step-Down	Adjustable	33 V
Microchip Technology MIC4576BU TR	3 A	Positive	Buck	36 V	TO-263-5	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1	4 V	85 °C	-40 °C	1.23 V	200 kHz	Surface Mount		Step-Down	Adjustable	33 V
Microchip Technology MIC4576WU	3 A	Positive	Buck	36 V	TO-263-5	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1	4 V	85 °C	-40 °C	1.23 V	200 kHz	Surface Mount		Step-Down	Adjustable	33 V

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	$ 5.95
		25	$ 4.94
		100	$ 4.51
Microchip Direct	TUBE	1	$ 5.95
		25	$ 4.94
		100	$ 4.51
		1000	$ 3.76
		5000	$ 3.47
		10000	$ 3.21
Newark	Each	1	$ 7.87
		10	$ 7.35
		25	$ 6.82
		50	$ 6.60
		100	$ 6.37

Description

General part information

MIC4576 Series

The MIC4576 is a series of easy to use fixed and adjustable BiCMOS step-down (buck) switch-mode voltage regulators. The 200kHz MIC4576 duplicates the pinout and function of the 52kHz LM2576. The higher switching frequency may allow up to a 2:1 reduction in output filter inductor size.

The MIC4576 is available in 3.3V, and 5V fixed output versions or a 1.23V to 33V adjustable output version. Both versions are capable of driving a 3A load with excellent line and load regulation.

The feedback voltage is guaranteed to ±2% tolerance for adjustable versions, and the output voltage is guaranteed to ±3% for fixed versions, within specified voltages and load conditions. The oscillator frequency is guaranteed to ±10%.

Documents

Technical documentation and resources

MIC4576WU

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MIC4576WU

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Technical Specifications

MIC4576 Series

Pricing

Description

MIC4576 Series

Documents

Product Change Notice EN

Technical Data Sheet EN

200kHz MIC4574/5/6 Family Design Guide

Practical Switching Regulator Circuits

Migrating to KSZ8051 Family PHY Transceivers

MIC4576 200 kHz Simple 3A Buck Regulator Data Sheet

MIC4807 Display Dimmer

MIC4576 Series