Integrated Circuits (ICs)

MIC4681YM-TR

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Microchip Technology

2A PEAK SUPERSWITCHER 8 SOIC 3.9MM T/R ROHS COMPLIANT: YES

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Integrated Circuits (ICs)

MIC4681YM-TR

Active

Microchip Technology

2A PEAK SUPERSWITCHER 8 SOIC 3.9MM T/R ROHS COMPLIANT: YES

Deep-Dive with AI

DocumentsDatasheet Product Change Notice EN

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	MIC4681YM-TR

Current - Output	1 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 / Case	8-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	8-SOIC
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Max) [Max]	30 V
Voltage - Input (Min) [Min]	4 V
Voltage - Output (Min/Fixed)	1.25 V

MIC4681 Series

Part	Function	Current - Output	Voltage - Input (Max) [Max]	Voltage - Input (Min) [Min]	Package / Case	Package / Case [y]	Package / Case [x]	Mounting Type	Frequency - Switching	Output Type	Supplier Device Package	Number of Outputs	Topology	Voltage - Output (Min/Fixed)	Operating Temperature [Min]	Operating Temperature [Max]	Output Configuration	Output Type
Microchip Technology MIC4681YM-TR	Step-Down	1 A	30 V	4 V	8-SOIC	3.9 mm	0.154 in	Surface Mount	200 kHz	Adjustable	8-SOIC	1	Buck	1.25 V	-40 °C	125 ¯C	Positive
Microchip Technology MIC4681-2.5BM TR	Step-Down	1 A	30 V	4 V	8-SOIC	3.9 mm	0.154 in	Surface Mount	200 kHz		8-SOIC	1	Buck	2.5 V	-40 °C	125 ¯C	Positive	1.81 mOhm
Microchip Technology MIC4681BM	Step-Down	1 A	30 V	4 V	8-SOIC	3.9 mm	0.154 in	Surface Mount	200 kHz	Adjustable	8-SOIC	1	Buck	1.25 V	-40 °C	125 ¯C	Positive
Microchip Technology MIC4681-5.0BM	Step-Down	1 A	30 V	4 V	8-SOIC	3.9 mm	0.154 in	Surface Mount	200 kHz		8-SOIC	1	Buck	5 V	-40 °C	125 ¯C	Positive	1.81 mOhm
Microchip Technology MIC4681-2.5BM	Step-Down	1 A	30 V	4 V	8-SOIC	3.9 mm	0.154 in	Surface Mount	200 kHz		8-SOIC	1	Buck	2.5 V	-40 °C	125 ¯C	Positive	1.81 mOhm
Microchip Technology MIC4681-5.0BM TR	Step-Down	1 A	30 V	4 V	8-SOIC	3.9 mm	0.154 in	Surface Mount	200 kHz		8-SOIC	1	Buck	5 V	-40 °C	125 ¯C	Positive	1.81 mOhm
Microchip Technology MIC4681YM	Step-Down	1 A	30 V	4 V	8-SOIC	3.9 mm	0.154 in	Surface Mount	200 kHz	Adjustable	8-SOIC	1	Buck	1.25 V	-40 °C	125 ¯C	Positive
Microchip Technology MIC4681BM-TR	Step-Down	1 A	30 V	4 V	8-SOIC	3.9 mm	0.154 in	Surface Mount	200 kHz	Adjustable	8-SOIC	1	Buck	1.25 V	-40 °C	125 ¯C	Positive

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	2500	$ 2.69
Microchip Direct	T/R	1	$ 3.56
		25	$ 2.97
		100	$ 2.69
		1000	$ 2.61
		5000	$ 2.58
Newark	Each (Supplied on Full Reel)	100	$ 2.77

Description

General part information

MIC4681 Series

The MIC4681 SuperSwitcher™ is an easy-to-use step-down (buck) voltage-mode switching regulator. The 200kHz MIC4681 achieves over 1A of continuous output current over a 4V to 30V input range in an 8-lead SOP package . The MIC4681 features a high 2.1A minimum current limit, making the device ideal for pulsed current applications such as GSM and TDMA cell phone battery chargers and power supplies. The MIC4681 sustains an output of 4.2V/2A within a typical GSM charging environment.

The MIC4681 has an input voltage range of 4V to 30V, with excellent line, load, and transient response. The regulator performs cycle-by-cycle current limiting and thermal shutdown for protection under fault conditions. In shutdown mode, the regulator draws less than 6µA of standby current.

The MIC4681 SuperSwitcher™ regulator requires a minimum number of external components and can operate using a standard series of inductors and capacitors. Frequency compensation is provided internally for fast transient response and ease of use.