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MIC28511

60V/3A Synchronous Buck Regulator w/Hyper Speed Control™

Status: In Production

Features:

  • 4.6V to 60V operating input voltage supply
  • Up to 3A output current
  • Integrated high-side and low-side N-channel MOSFETs
  • HyperLight Load® (MIC28511-1) and Hyper Speed Control™ (MIC28511-2) architecture
  • Enable input and power good (PGOOD) output
  • Programmable current limit and foldback "hiccup" mode short-circuit protection
  • Built-in 5V regulator for single-supply operation
  • Adjustable 200kHz to 680kHz switching frequency
  • Fixed 5ms soft-start
  • Internal compensation and thermal shutdown
  • Thermally enhanced 24-pin 3mm — 4mm FCQFN package
  • Junction temperature range of -40°C to +125°C
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC28511 is a synchronous step-down switching regulator with internal power switches capable of providing up to 3A output current from a wide input supply range from 4.6V to 60V. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%. A constant switching frequency can be programmed from 200kHz to 680kHz. The Hyper Speed Control™ and HyperLight Load® architectures of the MIC28511 allow for high VIN (low VOUT) operation and ultra-fast transient response while reducing the required output capacitance and providing very good light load efficiency.

The MIC28511 offers a full suite of protection features to ensure protections under fault conditions. These include under-voltage lockout to ensure proper operation under power sag conditions, internal soft-start to reduce inrush current, fold-back current limit, “hiccup” mode short-circuit protection, and thermal shutdown.

Additional Features
    • 4.6V to 60V operating input voltage supply
    • Up to 3A output current
    • Integrated high-side and low-side N-channel MOSFETs
    • HyperLight Load® (MIC28511-1) and Hyper Speed Control™ (MIC28511-2) architecture
    • Enable input and power good (PGOOD) output
    • Programmable current limit and foldback "hiccup" mode short-circuit protection
    • Built-in 5V regulator for single-supply operation
    • Adjustable 200kHz to 680kHz switching frequency
    • Fixed 5ms soft-start
    • Internal compensation and thermal shutdown
    • Thermally enhanced 24-pin 3mm — 4mm FCQFN package
    • Junction temperature range of -40°C to +125°C
Parametrics
Name
Value
Regulator Type
Step Down (Buck)
# of Outputs
1
Input Voltage Range Min (V)
4.6
Input Voltage Range Max (V)
60
Output Voltage Range Min (V)
0.8
Output Voltage Range Max (V)
24
Output Current (mA) max
3000
Quiescent Current (mA) typ
0.4
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 125
Vfb (V)
0.8
Duty Cycle Max (%)
0.85
SHUTDOWN Current (µA) (Typ)
0.1
Light Load Efficiency Mode
Yes

Documents

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Software Library

Development Environment

  • Demo & Evaluation Boards
  • Software Libraries
  • Application Examples
Demo & Evaluation Boards
MIC28511-1YFL Evaluation Board
MIC28511-1YFL Evaluation Board ( MIC28511-1YFL-EV )

The MIC28511 eval board is used to demonstrate the features of the MIC28511, a synchronous step-down regulator featuring unique adaptive on-time control architecture with integrated power MOSFETs. The MIC28511 operates over an input supply range of 4.6V to 60V, 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% from...

Learn More
Add To Cart
MIC28511-2YFL Evaluation Board
MIC28511-2YFL Evaluation Board ( MIC28511-2YFL-EV )

The MIC28511 eval board is used to demonstrate the features of the MIC28511, a synchronous step-down regulator featuring unique adaptive on-time control architecture with integrated power MOSFETs. The MIC28511 operates over an input supply range of 4.6V to 60V, 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% from...

Learn More
Add To Cart
Software Libraries
Analog Simulation - MIC28511

The MIC28511 is a synchronous step-down switching regulator with internal power switches capable of providing up to 3A output current from a wide input supply range from 4.6V to 60V. The output...

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
MIC28511-1YFL-TR
0.025600
0.804900
24
VQFN
3x4x0.9mm
Matte Tin
e3
MIC28511-2YFL-TR
0.025600
0.804900
24
VQFN
3x4x0.9mm
Matte Tin
e3
MIC28511-1YFL-T5
0.025600
0.804900
24
VQFN
3x4x0.9mm
Matte Tin
e3
MIC28511-2YFL-T5
0.025600
0.804900
24
VQFN
3x4x0.9mm
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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