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MIC2128

75V Synchronous Buck Controllers Featuring Adaptive ON-Time Control and External Soft start

Status: In Production

Features:

  • Hyper Speed Control® architecture enables:
  • 4.5V to 75V input voltage
  • Adjustable output voltage from 0.6V to 30V
  • 270kHz to 800kHz programmable switching frequency
  • Externally programmable soft start
  • Enable input and power good output
  • Built-in 5V regulator for single-supply operation
  • Auxiliary bootstrap LDO
  • Internal Bootstrap diode
  • Programmable current limit and "hiccup" mode short-circuit protection
  • 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

The MIC2128 is a constant-frequency synchronous buck controllers featuring a unique adaptive ON-time control architecture. The MIC2128 operates over an input voltage range from 4.5V to 75V and can be used to supply load current up to 25A (Thermally Limited) . The output voltage is adjustable down to 0.6V with a guaranteed accuracy of ±1%. The device operates with programmable switching frequency from 270kHz to 800kHz.

The MIC2128 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, Adjustable soft-start to reduce inrush current, "hiccup" mode short-circuit protection, and thermal shutdown.

Additional Features
    • Hyper Speed Control® architecture enables:
    • 4.5V to 75V input voltage
    • Adjustable output voltage from 0.6V to 30V
    • 270kHz to 800kHz programmable switching frequency
    • Externally programmable soft start
    • Enable input and power good output
    • Built-in 5V regulator for single-supply operation
    • Auxiliary bootstrap LDO
    • Internal Bootstrap diode
    • Programmable current limit and "hiccup" mode short-circuit protection
    • 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)
75
Minimum Output Voltage (V)
0.6
Maximum Output Voltage (V)
30
PFM, Discontinuous, Hyperlight load, or Skip Mode
False
Typical Tolerance (%)
1
Duty Cycle Max (%)
85
Operating Frequency (Hz)
270KHz to 800KHz
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)
1.4
Iq Off (µA)
0.1
Package
3X3 mm QFN

Documents

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Software Library

User Guides

Development Environment

  • Demo & Evaluation Boards
  • Software Libraries
Demo & Evaluation Boards
MIC2128YML Evaluation Board
MIC2128YML Evaluation Board ( ADM00770 )

The MIC2128 Evaluation Board is a constant-frequency, synchronous buck controller
featuring a unique adaptive on-time control architecture. The MIC2128 operates over
an input supply range of 4.5V to 75V. The output voltage is adjustable down to 0.6V
with a guaranteed accuracy of ±1%. The device operates with programmable switching
frequency from 270 kHz to...

Learn More
Add To Cart
Software Libraries
Analog Simulation - MIC2128

The MIC2128 is a constant-frequency synchronous buck controllers featuring a unique adaptive ON-time control architecture. The MIC2128 operates over an input voltage range from 4.5V to 75V and can be...

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
MIC2128YML-T5
0.021400
0.516430
16
VQFN
3x3x0.9mm
NiPdAu
e4
MIC2128YML-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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