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MIC4681BM The MIC4681BM is an easy-to-use step-down (buck) voltage-mode switching regulator from Microchip Technology. It provides over 1A of continuous output current over a 4V to 30V input range.
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MIC4681BM

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
The MIC4681BM is an easy-to-use step-down (buck) voltage-mode switching regulator from Microchip Technology. It provides over 1A of continuous output current over a 4V to 30V input range.
✓ Total Stock: 5,000 pcs
$ Price Range: $1.08

MIC4681BM Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
5,000 pcs
On Request
5000 pcs On Request 1 On Request On Request On Request On Request On Request
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MIC4681BM Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Efficiency
Frequency
Function
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Type
Output Voltage
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage
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MIC4681BM Description

Short technical summary and product information.

The MIC4681BM SuperSwitcher™ is an efficient step-down (buck) voltage-mode switching regulator designed for ease of use. It operates at a fixed 200kHz frequency and can deliver over 1A of continuous output current, with a peak capability of 2A, making it suitable for pulsed current applications like GSM chargers.

 

This regulator features a wide input voltage range of 4V to 30V and an adjustable output voltage down to 1.25V. It requires minimal external components and is internally compensated for fast transient response. The MIC4681BM includes cycle-by-cycle current limiting and thermal shutdown for protection under fault conditions. In shutdown mode, it draws less than 6µA of standby current.

 

The device is housed in an 8-lead SOP package, suitable for surface mounting. It operates within a junction temperature range of -40°C to +125°C. Typical applications include cellular phone battery chargers and power supplies, as well as general-purpose high-efficiency step-down regulation.

MIC4681BM Quick Information

Product Type: Buck Regulator
Canonical Name: MIC4681BM SuperSwitcher™ SOP-8 Buck Regulator
Subcategory: DC-DC Switching Regulator

MIC4681BM Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

MIC4681BM Estimated Pricing

Qty Low High
1+ $1.08 $1.08

Estimated market price range - modelled values for guidance only, not live distributor offers.

MIC4681BM Features

  • Easy-to-use step-down buck regulator.
  • 1A continuous output current capability.
  • Wide 4V to 30V input voltage range.
  • Fixed 200kHz switching frequency.
  • Adjustable output voltage down to 1.25V.

MIC4681BM Applications

  • Ideal for battery-powered portable devices.
  • Used in distributed power systems.
  • Suitable for industrial control circuits.
  • Applies to automotive aftermarket modules.
  • Works in networking and telecom equipment.

MIC4681BM FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the MIC4681BM?

4V to 30V.

What is the output voltage range?

Adjustable down to 1.25V.

What is the package type?

8-Pin SOIC (8-SOIC).

What is the operating temperature range?

-40°C to +125°C (junction).

What is the switching frequency?

200kHz.

What is the output current rating?

1A continuous, 2A peak.

What is the typical efficiency?

Up to 90%.

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