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MIC24051

19V/6A High Efficiency DC-DC Buck Regulator

Status: In Production

Features:

  • Hyper Speed Control™ architecture enables
  • High delta V operation (VIN = 19V and VOUT = 0.8V)
  • Small output capacitance
  • 4.5V to 19V input voltage
  • Adjustable output from 0.8V to 5.5V (±1% accuracy)
  • Any Capacitor™ stable &em; Zero-to-high ESR
  • 6A output current capability, up to 95% efficiency
  • 600kHz switching frequency
  • No external compensation
  • Power Good (PG) output
  • Foldback current limit and "hiccup" mode short-circuit protection
  • Supports safe start-up into a pre-biased load
  • -40°C to +125°C junction temperature range
  • Available in 28-pin 5mm X 6mm QFN package
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC24051 is a constant-frequency, synchronous buck regulator featuring a unique adaptive on-time control architecture. The MIC24051 operates over an input supply range of 4.5V to 19V and provides a regulated output of up to 6A of output current. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%, and the device operates at a switching frequency of 600kHz.

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 adaptive tON ripple control architecture combines the advantages of fixed-frequency operation and fast transient response in a single device.

The MIC24051 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. An open-drain Power Good (PG) pin is provided.

Also see the 6A HyperLight Load® part, MIC24052.

Additional Features
    • Hyper Speed Control™ architecture enables
      • High delta V operation (VIN = 19V and VOUT = 0.8V)
      • Small output capacitance
    • 4.5V to 19V input voltage
    • Adjustable output from 0.8V to 5.5V (±1% accuracy)
    • Any Capacitor™ stable &em; Zero-to-high ESR
    • 6A output current capability, up to 95% efficiency
    • 600kHz switching frequency
    • No external compensation
    • Power Good (PG) output
    • Foldback current limit and "hiccup" mode short-circuit protection
    • Supports safe start-up into a pre-biased load
    • -40°C to +125°C junction temperature range
    • Available in 28-pin 5mm X 6mm QFN package
Parametrics
Name
Value
Regulator Type
Step Down (Buck)
# of Outputs
1
Input Voltage Range Min (V)
4.5
Input Voltage Range Max (V)
19
Output Voltage Range Min (V)
0.8
Output Voltage Range Max (V)
5.5
Output Current (mA) max
6000
Quiescent Current (mA) typ
0.73
Switching Frequency (kHz)
600
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 125
Vfb (V)
0.8
Duty Cycle Max (%)
82
SHUTDOWN Current (µA) (Typ)
5

Documents

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Development Environment

  • Demo & Evaluation Boards
  • Software Libraries
  • Application Examples
Demo & Evaluation Boards
MIC24051YJL Evaluation Board
MIC24051YJL Evaluation Board ( MIC24051YJL-EV )

The MIC24051 DC/DC synchronous buck regulator operates over an input supply range of 4.5V to 19V and provides a regulated output at up to 6A of load current. The output voltage is adjustable down to 0.8V with a typical accuracy of ±1%. The device operates at a switching frequency of 600kHz, which remains fairly constant with changes in input voltage and output load. The basic parameters of the...

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Software Libraries
Analog Simulation - MIC24051

MIC24051 is a constant-frequency, synchronous buck regulator featuring a unique adaptive on-time control architecture. The MIC24051 operates over an input supply range of 4.5V to 19V and provides a...

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
MIC24051YJL-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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