MIC4685WR-TR

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Microchip Technology

3A BUCK REGULATOR 7 SPAK - T/R ROHS COMPLIANT: YES

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MIC4685WR-TR

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Microchip Technology

3A BUCK REGULATOR 7 SPAK - T/R ROHS COMPLIANT: YES

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Description Specifications Series Pricing CAD Documents

Description

General part information

MIC4685 Series

The MIC4685 is a high-efficiency 200kHz stepdown (buck) switching regulator. Power conversion efficiency of above 85% is easily obtainable for a wide variety of applications. The MIC4685 achieves 3A of continuous current in the 7-lead SPAK package.

The thermal performance of the SPAK allows it to replace TO-220s and TO-263s (D2 PAKs) in many applications. The SPAK saves board space with a 36% smaller footprint than TO-263.

High efficiency is maintained over a wide output current range by utilizing a boost capacitor to increase the voltage available to saturate the internal power switch. As a result of this high efficiency, only the ground plane of the PCB is needed for a heat sink.

Technical Specifications

Parameters and characteristics for this part

Specification	MIC4685WR-TR

Current - Output	3 A
Frequency - Switching	200 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	Adjustable
Package Leads	7 Leads
Package Name	SPAK-7, 7-SPAK
Synchronous Rectifier	No
Topology	Buck
Voltage - Input (Max)	30 V p-p
Voltage - Input (Min)	4 V
Voltage - Output (Max)	28.2 V
Voltage - Output (Min/Fixed)	1.235 V

MIC4685 Series

200kHz 3A SuperSwitcher™ Buck Regulator

Part	Package Leads	Package Name	Voltage - Output (Min/Fixed)	Number of Outputs	Operating Temperature (Max)	Operating Temperature (Min)	Voltage - Output (Max)	Synchronous Rectifier	Current - Output	Mounting Type	Voltage - Input (Min)	Frequency - Switching	Output Type	Output Configuration	Topology	Function	Voltage - Input (Max)
Microchip Technology MIC4685BR TR	7 Leads	7-SPAK SPAK-7	1.235 V	1	125 °C	-40 °C	28.2 V	No	3 A	Surface Mount	4 V	200 kHz	Adjustable	Positive	Buck	Step-Down	30 V p-p
Microchip Technology MIC4685-5.0BR	7 Leads	7-SPAK SPAK-7	5 V	1	125 °C	-40 °C		No	3 A	Surface Mount	4 V	200 kHz	Fixed	Positive	Buck	Step-Down	30 V p-p
Microchip Technology MIC4685WR	7 Leads	7-SPAK SPAK-7	1.235 V	1	125 °C	-40 °C	28.2 V	No	3 A	Surface Mount	4 V	200 kHz	Adjustable	Positive	Buck	Step-Down	30 V p-p
Microchip Technology MIC4685BR	7 Leads	7-SPAK SPAK-7	1.235 V	1	125 °C	-40 °C	28.2 V	No	3 A	Surface Mount	4 V	200 kHz	Adjustable	Positive	Buck	Step-Down	30 V p-p
Microchip Technology MIC4685WR-TR	7 Leads	7-SPAK SPAK-7	1.235 V	1	125 °C	-40 °C	28.2 V	No	3 A	Surface Mount	4 V	200 kHz	Adjustable	Positive	Buck	Step-Down	30 V p-p
Microchip Technology MIC4685-5.0BR TR	7 Leads	7-SPAK SPAK-7	5 V	1	125 °C	-40 °C		No	3 A	Surface Mount	4 V	200 kHz	Fixed	Positive	Buck	Step-Down	30 V p-p

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

MIC4685 Data Sheet

Product Change Notice EN

MIC4685WR-TR | Datasheet