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MIC22205

4MHz 2A Synchronous Buck Regulator w/Programmable Frequency

Status: In Production

Features:

  • Input voltage range: 2.9V to 5.5V
  • Output voltage adjustable down to 0.7V
  • Output load current up to 2A
  • Safe start-up into a pre-biased output
  • Full sequencing and tracking capability
  • Power Good (PG) 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
  • 12-pin 3mm x 3mm MLF®
  • -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 Micrel MIC22205 is a high-efficiency, 2A, integrated switch, synchronous buck (step-down) regulator. The MIC22205 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 MIC22205 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.

The MIC22205 is available in a 12-pin 3mm x 3mm MLF® with a junction operating range from -40°C to +125°C.

Additional Features
    • Input voltage range: 2.9V to 5.5V
    • Output voltage adjustable down to 0.7V
    • Output load current up to 2A
    • Safe start-up into a pre-biased output
    • Full sequencing and tracking capability
    • Power Good (PG) 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
    • 12-pin 3mm x 3mm MLF®
    • -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
2000
Quiescent Current (mA) typ
1.2
Switching Frequency (kHz)
800 to 4000
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 125
Vfb (V)
0.7
Duty Cycle Max (%)
100
SHUTDOWN Current (µA) (Typ)
3.7

Documents

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Development Environment

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  • Application Examples
Demo & Evaluation Boards
MIC22205YML Evaluation Board
MIC22205YML Evaluation Board ( MIC22205YML-EV )

The MIC22205 is a high-efficiency, 2A, integrated switch, synchronous buck (step-down) regulator. It is frequency programmable up to 4MHz. The MIC22205 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...

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC22205YML-TR
0.023840
0.644302
12
VDFN
3x3x0.9mm
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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