Design contains obsolete parts

MIC24085AYML EV: 3.3V @ 3A, 4.5 ~ 18V in, Buck

Summary

The Micrel MIC24085 is a constant-frequency, current-mode PWM buck regulator with integrated switches. The MIC24085 is targeted for cost-sensitive and high-performance applications.

The MIC24085 operates over a supply range of 4.5V to 18V at a fixed 1MHz switching frequency and can be used to provide up to 3A of output current. The output voltage is adjustable down to 0.9V.

The MIC24085 provides the features of low standby current at 10µA, device enable, input undervoltage lockout, and output voltage monitoring. The part also provides the protections of overcurrent and overtemperature.

The basic parameters of the evaluation board are: Buck regulator, MIC24085A, 1MHz, adjustable output; input, 4.5V to 18V; and output, 0.9V to 5V at 3A.

Specifications

Manufacturer Microchip Technology
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number 576-4549-ND
Eval Board Supplier Microchip Technology
Eval Board Normally In Stock
Topology Step Down
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 3.3 V
Current Out 3 A
Voltage In 4.5 ~ 18 V
Efficiency @ Conditions >90%, 6V in, 3.3V @ 0.25 ~ 1.5 A
>85%, 12V in, 3.3V @ 0.35 ~ 2.2 A
>80%, 18V in, 3.3V @ 0.3 ~ 2.75 A
Voltage Out Range 0.9 ~ 5 V
Features Current Limit (Adj. or Fixed)
Over Voltage Protection
PFM or PWM
Power Good Output
Shutdown, Enable, Standby
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 1 MHz
Standby Current [Typical] 5 µA
Quiescent Current [Typical] 2.3 mA
Component Count + Extras 15 + 15
Internal Switch Yes
Design Author Microchip Technology
Application / Target Market Digital Cameras
Networking
Printer, Plotter
Servers
Set-Top Boxes
Telecom
Standby Current [Maximum] 10 µA
Quiescent Current [Maximum] - Not Given
Main I.C. Base Part MIC24085AYML
Date Created By Author 2013-10
Date Added To Library 2015-01

Support Documents & Media

MIC24085AYML EV - User Guide MIC24085 - Datasheet

Media

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