Microchip logo
  • All
  • Products
  • Documents
  • Applications Notes
product primary image

MIC22705

1MHz 7A Synchronous Buck Regulator

Status: In Production

Features:

  • Input voltage range: 2.9V to 5.5V
  • Output voltage adjustable down to 0.7V
  • Output load current up to 7A
  • Safe start-up into a pre-biased load
  • Full sequencing and tracking capability
  • Power Good output
  • Efficiency >95% across a broad load range
  • 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
View More
Overview
Documents
Development Environment
RoHS Information
Buy Now

Device Overview

Summary

The MIC22705 is a high-efficiency, 7A integrated switch synchronous buck (step-down) regulator. The MIC22705 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 MIC22705 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 7A
    • Safe start-up into a pre-biased load
    • Full sequencing and tracking capability
    • Power Good output
    • Efficiency >95% across a broad load range
    • 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
7000
Quiescent Current (mA) typ
0.85
Switching Frequency (kHz)
1000
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 125
Vfb (V)
0.7
Duty Cycle Max (%)
1
SHUTDOWN Current (µA) (Typ)
5

Documents

Jump to:

Software Library

User Guides

Development Environment

  • Demo & Evaluation Boards
  • Software Libraries
  • Application Examples
Demo & Evaluation Boards
MIC22705YML Evaluation Board
MIC22705YML Evaluation Board ( MIC22705YML-EV )

The MIC22705 is a high-efficiency, 7A, integrated switch, synchronous buck (step-down) regulator. The MIC22705 achieves more than 95% efficiency and switches 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 is adjustable down to...

Learn More
Add To Cart
Software Libraries
Analog Simulation - MIC22705

The Micrel MIC22705 is a high-efficiency, 7A integrated switch synchronous buck (step-down) regulator. The MIC22705 is optimized for highest efficiency, achieving more than 95% efficiency while still...

Learn More

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC22705YML-TR
0.038700
0.204000
24
VQFN
4x4x0.9mm
Matte Tin
e3
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.

Buy from the Microchip Store

Grid
View
Table
View
Filter:
Apply
Clear
Only show products with samples
Product
Leads
Package Type
Temp Range
Packing Media
5K Pricing
Buy