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MIC2126

28V Synchronous Buck Controllers Featuring Adaptive ON-Time Control and Hyper Speed Control™

Status: In Production

Features:

  • Hyper Speed Control® architecture enables:
  • High delta-V operation (VIN = 28V and VOUT = 0.6V)
  • Any Capacitor™ stable
  • 4.5V to 28V input voltage
  • Adjustable output voltage from 0.6V to 24V
  • 200kHz to 650kHz programmable switching frequency
  • HyperLight Load® (MIC2125)
  • Hyper Speed Control® (MIC2126)
  • Enable input and power good output
  • Built-in 5V regulator for single-supply operation
  • Programmable current limit and "hiccup" mode short-circuit protection
  • 7ms internal soft-start, internal compensation, and thermal shutdown
  • Supports safe start-up into a pre-biased output
  • -40°C to +125°C junction temperature range
  • Available in 16-pin 3mm x 3mm QFN package
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

MIC2125 and MIC2126 are constant-frequency synchronous buck controllers featuring a unique adaptive ON-time control architecture. The MIC2125/6 operates over an input voltage range from 4.5V to 28V and can be used to supply load current up to 25A . The output voltage is adjustable down to 0.6V with a guaranteed accuracy of ±1%. The device operates with programmable switching frequency from 200kHz to 650kHz.

HyperLight Load® architecture provides the same high efficiency and ultra-fast transient response as the Hyper Speed Control® architecture under the medium to heavy loads. It also maintains high efficiency under light load conditions by transitioning to variable frequency, discontinuous conduction mode operation.

The MIC2125/6 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, "hiccup" mode short-circuit protection, and thermal shutdown.

Additional Features
    • Hyper Speed Control® architecture enables:
      • High delta-V operation (VIN = 28V and VOUT = 0.6V)
      • Any Capacitor™ stable
    • 4.5V to 28V input voltage
    • Adjustable output voltage from 0.6V to 24V
    • 200kHz to 650kHz programmable switching frequency
    • HyperLight Load® (MIC2125)
    • Hyper Speed Control® (MIC2126)
    • Enable input and power good output
    • Built-in 5V regulator for single-supply operation
    • Programmable current limit and "hiccup" mode short-circuit protection
    • 7ms internal soft-start, internal compensation, and thermal shutdown
    • Supports safe start-up into a pre-biased output
    • -40°C to +125°C junction temperature range
    • Available in 16-pin 3mm x 3mm QFN package
Parametrics
Name
Value
Supported Topologies
COT
Supported Outputs
1
Minimum Input Voltage (V)
4.5
Maximum Input Voltage (V)
28
Minimum Output Voltage (V)
0.6
Maximum Output Voltage (V)
28
PFM, Discontinuous, Hyperlight load, or Skip Mode
False
Typical Tolerance (%)
1
Duty Cycle Max (%)
85
Operating Frequency (Hz)
650000
External Clock Sync
False
Power Good Signal
True
Soft Start
True
Internal Compensation
True
Internal Voltage Bias
True
Enable Pin
True
Current Limit / Short Circuit Protection
True
Input UVLO Typ (V)
4.2
Operating Supply Current (mA)
1.1
Iq Off (µA)
0.1
Package
3mm X 3mm

Documents

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Software Library

User Guides

Development Environment

  • Demo & Evaluation Boards
  • Software Libraries
Demo & Evaluation Boards
MIC2126YML-20A-EV Eval Board
MIC2126YML-20A-EV Eval Board ( MIC2126YML-20A-EV )

The MIC2125/6 Demo Board has been developed to demonstrate the capabilities of the MIC2125/6 device with two adaptive ON-time control architectures:

  • Hyper Speed Control (MIC2126)
  • HyperLight Load (MIC2125)
The MIC2125 and MIC2126 Evaluation Boards require only a single power supply with at least 10A current capability. The MIC2125/6 each have an...

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Software Libraries
Analog Simulation - MIC2126

MIC2125 and MIC2126 are constant-frequency synchronous buck controllers featuring a unique adaptive ON-time control architecture. The MIC2125/6 operates over an input voltage range from 4.5V to 28V...

Learn More

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC2126YML-T5
0.021400
0.516430
16
VQFN
3x3x0.9mm
NiPdAu
e4
MIC2126YML-TR
0.021400
0.516430
16
VQFN
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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