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MIC28513

45V/4A Synchronous Buck Regulator w/Hyper Light Load™

Status: In Production

Features:

  • 4.6V to 45V operating input voltage supply
  • Up to 4A output current
  • Integrated high-side and low-side N-channel MOSFETs
  • HyperLight Load® (MIC28513-1) and Hyper Speed Control™ (MIC28513-2) architecture
  • Enable input, 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
  • 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 MIC28513 is a synchronous step-down switching regulator with internal power switches capable of providing up to 4A output current from a wide input supply range from 4.6V to 45V. 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 MIC28513's Hyper Speed ControlTM and HyperLight Load® architectures allow for high VIN (low VOUT) operation and ultra-fast transient response while reducing the required output capacitance. In addition to fore-mentioned attributes, the MIC28513-1's HyperLight Load architecture provides very good light load efficiency.

The MIC28513 offers a full suite of features to ensure protection under 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
    • 4.6V to 45V operating input voltage supply
    • Up to 4A output current
    • Integrated high-side and low-side N-channel MOSFETs
    • HyperLight Load® (MIC28513-1) and Hyper Speed Control™ (MIC28513-2) architecture
    • Enable input, 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
    • 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)
45
Output Voltage Range Min (V)
0.8
Output Voltage Range Max (V)
24
Output Current (mA) max
4000
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

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Software Libraries
Analog Simulation - MIC28513

The MIC28513 is a synchronous step-down switching regulator with internal power switches capable of providing up to 4A output current from a wide input supply range from 4.6V to 45V. The output...

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC28513-1YFL-T5
0.025600
0.804900
24
VQFN
3x4x0.9mm
Matte Tin
e3
MIC28513-2YFL-T5
0.025600
0.804900
24
VQFN
3x4x0.9mm
Matte Tin
e3
MIC28513-1YFL-TR
0.025600
0.804900
24
VQFN
3x4x0.9mm
Matte Tin
e3
MIC28513-2YFL-TR
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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