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MIC22405

4MHz 4A Synchronous Buck Regulator w/Programmable Freq. & POR

Status: In Production

Features:

  • Input voltage range: 2.9V to 5.5V
  • Output voltage adjustable down to 0.7V
  • Output load current up to 4A
  • Safe start-up into a pre-biased output
  • Full sequencing and tracking capability
  • Power Good output
  • Efficiency > 95% across a broad load range
  • Programmable frequency 300kHz to 4MHz
  • Ultra-fast transient response
  • Easy RC compensation
  • 100% maximum duty cycle
  • Fully-integrated MOSFET switches
  • Thermal shutdown and current-limit protection
  • -40°C to +125°C junction temperature range
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC22405 is a high efficiency, 4A integrated switch synchronous buck (step-down) regulator. The MIC22405 is optimized for highest efficiency, achieving more than 95% efficiency while still switching at 1MHz. The ultra-high speed control loop keeps the output voltage within regulation even under the extreme transient load swings commonly found in FPGAs and low-voltage ASICs. The output voltage is pre-bias safe and can be adjusted down to 0.7V to address all low-voltage power needs.

The MIC22405 offers a full range of sequencing and tracking options. The Enable/Delay (EN/DLY) pin, combined with the Power Good (PG) pin, allows multiple outputs to be sequenced in any way during turn-on and turn-off. The Ramp Control™ (RC) pin allows the device to be connected to another product in the MIC22xxx and/or MIC68xxx family, to keep the output voltages within a certain ∆V on start-up.

Additional Features
    • Input voltage range: 2.9V to 5.5V
    • Output voltage adjustable down to 0.7V
    • Output load current up to 4A
    • Safe start-up into a pre-biased output
    • Full sequencing and tracking capability
    • Power Good output
    • Efficiency > 95% across a broad load range
    • Programmable frequency 300kHz to 4MHz
    • Ultra-fast transient response
    • Easy RC compensation
    • 100% maximum duty cycle
    • Fully-integrated MOSFET switches
    • Thermal shutdown and current-limit protection
    • -40°C to +125°C junction temperature range
Parametrics
Name
Value
Regulator Type
Step Down (Buck)
# of Outputs
1
Input Voltage Range Min (V)
2.9
Input Voltage Range Max (V)
5.5
Output Voltage Range Min (V)
0.7
Output Voltage Range Max (V)
5.5
Output Current (mA) max
4000
Quiescent Current (mA) typ
1.3
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 125
Vfb (V)
0.7
Duty Cycle Max (%)
1
SHUTDOWN Current (µA) (Typ)
5

Documents

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Software Library

Development Environment

  • Demo & Evaluation Boards
  • Software Libraries
Demo & Evaluation Boards
MIC22405YML Evaluation Board
MIC22405YML Evaluation Board ( MIC22405YML-EV )

The MIC22405 is a high-efficiency, 4A, integrated switch, synchronous buck (step-down) regulator. The MIC22405 achieves more than 95% efficiency and switches at 1MHz. The ultra-high speed control loop keeps the output voltage within regulation even under extreme transient load swings commonly found in FPGAs and low-voltage ASICs. The output voltage is pre-bias safe and is adjustable down to 0.7V.

Learn More
Add To Cart
Software Libraries
Analog Simulation - MIC22405

The Micrel MIC22405 is a high efficiency, 4A integrated switch synchronous buck (step-down) regulator. The MIC22405 is optimized for highest efficiency, achieving more than 95% efficiency while still...

Learn More

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC22405YML-TR
0.031400
0.664302
20
VQFN
4x3x0.9mm
NiPdAu
e4
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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