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MIC2203

1MHz 300mA Synchronous PWM Buck Regulator w/Sync

Status: In Production

Features:

  • Input voltage range: 2.3V to 5.5V
  • Output voltage adjustable down to 0.5V
  • 300mA output current
  • Constant 1MHz PWM switching frequency
  • > 95% efficiency
  • < 1mA switching supply current
  • < 350µA static quiescent current
  • < 1µA shutdown current
  • All-ceramic capacitors
  • Easily synchronized to external clock
  • SYNCLOCK feature to daisy chain multiple devices
  • Thermal shutdown and current limit protection
  • 10-pin MSOP package
  • -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 MIC2203 is a high efficiency 1MHz PWM synchronous buck switching regulator. The MIC2203 features low noise constant frequency PWM operation with a low dynamic supply current of <1mA. The low noise and efficient operation both make the MIC2203 well suited for sensitive RF, and audio power applications.

The MIC2203 operates from 2.3V to 5.5V input and can supply over 300mA of output current with output voltages down to 0.5V. Additionally, the MIC2203 can be synchronized to an external clock, or multiple MIC2203s can easily be daisy-chained with the SYNCLOCK feature.

The MIC2203 has a high loop bandwidth with corresponding ultra fast transient response times. This reduces the output capacitor size, and is very useful when powering applications that require fast dynamic response such as CPU cores and RF circuitry in high performance cellular phones and PDAs.

The MIC2203 is available in 10-pin MSOP package with an operating junction temperature range from -40°C to 125°C.

Additional Features
    • Input voltage range: 2.3V to 5.5V
    • Output voltage adjustable down to 0.5V
    • 300mA output current
    • Constant 1MHz PWM switching frequency
    • > 95% efficiency
    • < 1mA switching supply current
    • < 350µA static quiescent current
    • < 1µA shutdown current
    • All-ceramic capacitors
    • Easily synchronized to external clock
    • SYNCLOCK feature to daisy chain multiple devices
    • Thermal shutdown and current limit protection
    • 10-pin MSOP package
    • -40°C to +125°C junction temperature range
Parametrics
Name
Value
Regulator Type
Step Down (Buck)
# of Outputs
1
Input Voltage Range Min (V)
2.3
Input Voltage Range Max (V)
5.5
Output Voltage Range Min (V)
0.5
Output Voltage Range Max (V)
5.5
Output Current (mA) max
300
Quiescent Current (mA) typ
0.32
Switching Frequency (kHz)
1000
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 125
Vfb (V)
0.5
Duty Cycle Max (%)
1
SHUTDOWN Current (µA) (Typ)
0.01

Documents

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC2203YMM
0.024500
0.135600
10
MSOP
3x3x1.0mm
NiPdAu
e4
MIC2203YMM-TR
0.024500
0.431180
10
MSOP
3x3x1.0mm
NiPdAu
e4
MIC2203YML-TR
0.022700
0.643702
10
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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