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MIC26400

26V/5A DC-DC Buck Regulator w/Hyper Speed Control™

Status: In Production

Features:

  • Hyper Speed Control™ architecture enables
  • High delta V operation (VIN = 26V and VOUT = 0.8V)
  • Small output capacitance
  • 4.5V to 26V input voltage
  • Adjustable output from 0.8V to 5.5V (±1% accuracy)
  • Any Capacitor™ Stable
  • Zero ESR to high-ESR output capacitance
  • 5A output current capability
  • 300kHz switching frequency
  • Internal compensation
  • Up to 95% efficiency
  • 6ms Internal soft-start
  • Foldback current limit and "hiccup" mode short-circuit protection
  • Thermal shutdown
  • Supports safe start-up into a pre-biased load
  • -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 MIC26400 is a constant-frequency, synchronous buck regulator featuring a unique digitally modified adaptive ON-time control architecture. The MIC26400 operates over an input supply range of 4.5V to 26V and provides a regulated output at up to 5A of output current. The output voltage is adjustable down to 0.8V with a typical accuracy of ±1%, and the device operates at a switching frequency of 300kHz.

Hyper Speed Control™ architecture allows for ultra-fast transient response while reducing the output capacitance and also makes (High VIN)/(Low VOUT) operation possible. This digitally modified adaptive tON ripple control architecture combines the advantages of fixed frequency operation and fast transient response in a single device.

The MIC26400 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include undervoltage lockout to ensure proper operation under power-sag conditions, internal soft-start to reduce inrush current, foldback current limit, "hiccup" mode short-circuit protection and thermal shutdown.

Additional Features
    • Hyper Speed Control™ architecture enables
      • High delta V operation (VIN = 26V and VOUT = 0.8V)
      • Small output capacitance
    • 4.5V to 26V input voltage
    • Adjustable output from 0.8V to 5.5V (±1% accuracy)
    • Any Capacitor™ Stable
      • Zero ESR to high-ESR output capacitance
    • 5A output current capability
    • 300kHz switching frequency
    • Internal compensation
    • Up to 95% efficiency
    • 6ms Internal soft-start
    • Foldback current limit and "hiccup" mode short-circuit protection
    • Thermal shutdown
    • Supports safe start-up into a pre-biased load
    • -40°C to +125°C junction temperature range

     

Parametrics
Name
Value
Regulator Type
Step Down (Buck)
# of Outputs
1
Input Voltage Range Min (V)
4.5
Input Voltage Range Max (V)
26
Output Voltage Range Min (V)
0.8
Output Voltage Range Max (V)
5.5
Output Current (mA) max
5000
Quiescent Current (mA) typ
1.4
Switching Frequency (kHz)
300
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 125
Vfb (V)
0.8
Duty Cycle Max (%)
0.87
SHUTDOWN Current (µA) (Typ)
700

Documents

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Development Environment

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Software Libraries
Analog Simulation - MIC26400

The Micrel MIC26400 is a constant-frequency, synchronous buck regulator featuring a unique digitally modified adaptive ON-time control architecture. The MIC26400 operates over an input supply range of...

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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
MIC26400YJL-TR
0.081600
0.227180
28
VQFN
5x6x0.9mm
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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