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MIC28304

70V/3A Power Module w/Hyper Light Load™, Hyper Speed Control™

Status: In Production

Features:

  • Stable with low-ESR ceramic output capacitor
  • No compensation and no inductor to choose
  • 4.5V to 70V input voltage
  • HyperLight Load® Control (MIC28304-1)
  • Hyper Speed Control™ (MIC28304-2)
  • Single-supply operation
  • Power Good (PG) output
  • Hiccup mode current limit
  • Low radiated emission (EMI) per EN55022, class B
  • 5ms internal soft-start, internal compensation, and thermal shutdown
  • Adjustable current limit
  • 0.8V Reference voltage with ±1% accuracy
  • Adjustable output voltage from 0.8V to 24V (also limited by duty cycle)
  • 200kHz to 600kHz, programmable switching frequency
  • Supports safe start-up into a pre-biased output
  • –40°C to +125°C junction temperature range
  • Available in 64-pin, 12mm × 12mm × 3.5mm QFN package
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

MIC28304 is synchronous step-down regulator module, featuring a unique adaptive ON-time control architecture. The module incorporates a DC-to-DC controller, power MOSFETs, bootstrap diode, bootstrap capacitor and an inductor in a single package. The MIC28304 operates over an input supply range from 4.5V to 70V and can be used to supply up to 3A of output current. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%. The device operates with programmable switching frequency from 200kHz to 600kHz. 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, but also maintains high efficiency under light load conditions by transitioning to variable frequency, discontinuous-mode operation. The MIC28304 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include under-voltage 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
    • Easy to use
      • Stable with low-ESR ceramic output capacitor
      • No compensation and no inductor to choose
    • 4.5V to 70V input voltage
    • HyperLight Load® Control (MIC28304-1)
    • Hyper Speed Control™ (MIC28304-2)
    • Single-supply operation
    • Power Good (PG) output
    • Hiccup mode current limit
    • Low radiated emission (EMI) per EN55022, class B
    • 5ms internal soft-start, internal compensation, and thermal shutdown
    • Adjustable current limit
    • 0.8V Reference voltage with ±1% accuracy
    • Adjustable output voltage from 0.8V to 24V (also limited by duty cycle)
    • 200kHz to 600kHz, programmable switching frequency
    • Supports safe start-up into a pre-biased output
    • –40°C to +125°C junction temperature range
    • Available in 64-pin, 12mm × 12mm × 3.5mm QFN package
Parametrics
Name
Value
Input Voltage Range (V)
4.5 to 70
Output Voltage (V)
Adj
Operating JunctionTemp. Range (°C)
-40 to +125
Control Scheme
COT
Vout Max (V)
24
Output Current (A)
3
HyperLight Load®
Yes
Hyper Speed Control®
Yes
PWRGood
Yes
SoftStart
Yes

Documents

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Software Library

Development Environment

  • Demo & Evaluation Boards
  • Software Libraries
  • Application Examples
Demo & Evaluation Boards
MIC28304-1 12V Evaluation Board
MIC28304-1 12V Evaluation Board ( MIC28304-1-12V-EV )

MIC28304-1 12V Evaluation Board

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MIC28304-1 5V Evaluation Board
MIC28304-1 5V Evaluation Board ( MIC28304-1-5V-EV )

MIC28304-1 5V Evaluation Board

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MIC28304-2-12V Evaluation Board
MIC28304-2-12V Evaluation Board ( MIC28304-2-12V-EV )

MIC28304-2-12V Evaluation Board

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MIC28304-2-5V Evaluation Board
MIC28304-2-5V Evaluation Board ( MIC28304-2-5V-EV )

MIC28304-2-5V Evaluation Board

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Software Libraries
Analog Simulation - MIC28304

Micrel’s MIC28304 is synchronous step-down regulator module, featuring a unique adaptive ON-time control architecture. The module incorporates a DC-to-DC controller, power MOSFETs, bootstrap...

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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
MIC28304-2YMP-TR
0.000364
6.828789
64
B1QFN
12x12x3mm
Matte Tin
e3
MIC28304-1YMP-T1
0.000364
6.828789
64
B1QFN
12x12x3mm
Matte Tin
e3
MIC28304-1YMP-TR
0.000364
6.828789
64
B1QFN
12x12x3mm
Matte Tin
e3
MIC28304-2YMP-T1
0.000364
6.828789
64
B1QFN
12x12x3mm
Matte Tin
e3
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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