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MIC23254

Dual 4MHz 400mA HyperLight Load® and Low Input Voltage Synchronous Buck Regulator

Status: In Production

Features:

  • Low input voltage range: 2.5V to 5.5V
  • Dual output current 400mA/400mA
  • Up to 94% peak efficiency and 85% efficiency at 1mA
  • 33µA dual quiescent current
  • 1µH inductor with a 4.7µF capacitor
  • 4MHz in PWM operation
  • Ultra-fast transient response
  • Low voltage output ripple
  • 20mVpp in HyperLight Load® mode
  • 3mV output voltage ripple in full PWM mode
  • 0.01µA shutdown current
  • -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 MIC23254 is a low-input voltage, high-efficiency 4MHz dual 400mA synchronous buck regulator with HyperLight Load® mode. HyperLight Load® provides very-high efficiency at light loads and ultra-fast transient response which is perfectly suited for supplying processor core voltages. An additional benefit of this proprietary architecture is very-low output ripple voltage throughout the entire load range with the use of small output capacitors. MIC23254 operates from an input voltage down to 2.5V for low battery states.

The device is designed for use with a 1µH inductor and a 4.7µF output capacitor that enables a sub-1mm height.

The MIC23254 has a very-low quiescent current of 33µA with both outputs enabled and can achieve over 85% efficiency at 1mA. At higher loads the MIC23254 provides a constant switching frequency around 4MHz while providing peak efficiencies over 90%.

Additional Features
    • Low input voltage range: 2.5V to 5.5V
    • Dual output current 400mA/400mA
    • Up to 94% peak efficiency and 85% efficiency at 1mA
    • 33µA dual quiescent current
    • 1µH inductor with a 4.7µF capacitor
    • 4MHz in PWM operation
    • Ultra-fast transient response
    • Low voltage output ripple
    • 20mVpp in HyperLight Load® mode
    • 3mV output voltage ripple in full PWM mode
    • 0.01µA shutdown current
    • -40°C to +125°C junction temperature range
Parametrics
Name
Value
Regulator Type
Step Down (Buck)
# of Outputs
2
Input Voltage Range Min (V)
2.5
Input Voltage Range Max (V)
5.5
Output Voltage Range Min (V)
1
Output Voltage Range Max (V)
1.8
Output Current (mA) max
2000
Switching Frequency (kHz)
4000
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 125
Duty Cycle Max (%)
0.86
SHUTDOWN Current (µA) (Typ)
0.01
Light Load Efficiency Mode
Yes

Documents

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Applications Source code

09/14/2017
362KB

Development tools data is currently unavailable.

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC23254-GCYMT-TR
0.006200
0.073000
10
UDFN
2x2x0.6mm
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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