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MIC24045

I2C Programmable 5A Synchronous Buck Regulator

Status: In Production

Features:

  • 4.5V to 19V input voltage range
  • 5A (maximum) output current
  • 0.64V to 5.25V in 5 mV, 10 mV, 30 mV and 50 mV Steps
  • High Efficiency (>95%)
  • Soft-Start: 0.16, 0.38, 0.76 and 1.5V/ms ramp rates 
  •  Switching Frequency: 310 kHz, 400 kHz, 500 kHz, 570 kHz, 660 kHz, 780 kHz, 1 MHz, 1.2 MHz 
  • Current Limits for 2A, 3A, 4A and 5A loads
  • ±1% output voltage accuracy
  • Supports safe start-up with pre-biased output
  • Internal soft-start and thermal shutdown protection
  • Hiccup-mode short-circuit protection
  • Available in a 20-pin 3mm x 3mm QFN package
  • -40°C to +125°C junction temperature range
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC24045 is an I2C-programmable, high-efficiency, wide input range, 5A synchronous step-down regulator. The MIC24045 is perfectly suited for multiple voltage rail application environments, typically found in computing and telecommunication systems. In the MIC24045 various parameters can be programmed via I2C, such as output voltage, switching frequency, soft-start slope, margining, current limit values and start-up delays. The wide switching frequency adjustment range, valley-current mode  control technique, high-performance error amplifier,and external compensation allow for the best trade-offs between high efficiency and the smallest possible solution size. The MIC24045 supports extensive diagnostics and status information through I2C.The MIC24045 pin-out is compatible with the MIC24046 pin-strapping programmable regulator pin-out, such that I2C-based implementations can be easily converted into pin-programmable ones. The MIC24045 is available in thermally-efficient, space-saving 20-pin 3 mm x 3 mm FQFN package with an operating junction temperature range from -40 C to +125 C.

Additional Features
    • 4.5V to 19V input voltage range
    • 5A (maximum) output current
    • I2C Programmable Output Voltage: 
      • 0.64V to 5.25V in 5 mV, 10 mV, 30 mV and 50 mV Steps
    • High Efficiency (>95%)
    • I2C programmability of: 
      • Soft-Start: 0.16, 0.38, 0.76 and 1.5V/ms ramp rates 
      •  Switching Frequency: 310 kHz, 400 kHz, 500 kHz, 570 kHz, 660 kHz, 780 kHz, 1 MHz, 1.2 MHz 
      • Current Limits for 2A, 3A, 4A and 5A loads
    • ±1% output voltage accuracy
    • Supports safe start-up with pre-biased output
    • Internal soft-start and thermal shutdown protection
    • Hiccup-mode short-circuit protection
    • Available in a 20-pin 3mm x 3mm QFN package
    • -40°C to +125°C junction temperature range
Parametrics
Name
Value
Regulator Type
Step Down (Buck)
# of Outputs
1
Input Voltage Range Min (V)
4.5
Input Voltage Range Max (V)
19
Output Voltage Range Min (V)
0.65
Output Voltage Range Max (V)
5.5
Output Current (mA) max
5000
Switching Frequency (kHz)
1200
Synchronous Rectifier
Yes
Operating Temp Range
-40 to +125
Vfb (V)
0.65
Duty Cycle Max (%)
90

Documents

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Software Libraries/Firmware

  
2422KB

Software Library

Development Environment

  • Demo & Evaluation Boards
  • Software Libraries
Demo & Evaluation Boards
MIC24045 Evaluation Board
MIC24045 Evaluation Board ( ADM00826 )

The MIC24045 Evaluation Board is designed to serve the MIC24045 device. For the evaluation of the MIC24045 the VIN supply ranges from 4.5V to 19V and output voltage from 0.64V to 5.25V in 5mV, 10mV, 30mV and 50mV steps at 5A. Additionally, and on-board load transient generator circuit and connections for loop gain measurements are provided. A USB connector and a USB cable are provided for board...

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Add To Cart
Software Libraries
Analog Simulation - MIC24045

The MIC24045 is an I2C-programmable, high-efficiency, wide input range, 5A synchronous step-down regulator. The MIC24045 is perfectly suited for multiple voltage rail application environments,...

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
MIC24045-JFYFL-TR
0.022100
0.128704
20
VQFN
3x3x0.9mm
Matte Tin
e3
MIC24045-2ZYFL
0.022100
0.050000
20
VQFN
3x3x0.9mm
Matte Tin
e3
MIC24045-2ZYFL-TR
0.022100
0.128704
20
VQFN
3x3x0.9mm
Matte Tin
e3
MIC24045-DIYFL
0.022100
0.050000
20
VQFN
3x3x0.9mm
Matte Tin
e3
MIC24045-DIYFL-TR
0.022100
0.128704
20
VQFN
3x3x0.9mm
Matte Tin
e3
MIC24045-EIYFL
0.022100
0.050000
20
VQFN
3x3x0.9mm
Matte Tin
e3
MIC24045-EIYFL-TR
0.022100
0.128704
20
VQFN
3x3x0.9mm
Matte Tin
e3
MIC24045-JFYFL
0.022100
0.050000
20
VQFN
3x3x0.9mm
Matte Tin
e3
MIC24045-KDYFL
0.022100
0.050000
20
VQFN
3x3x0.9mm
Matte Tin
e3
MIC24045-KDYFL-TR
0.022100
0.128704
20
VQFN
3x3x0.9mm
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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