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MIC24420

Dual 1MHz 2.5A PWM Sync Buck Regulator

Status: In Production

Features:

  • 4.5V to 15V input voltage range
  • Adjustable output voltages down to 0.7V
  • 2.5A per channel
  • 180° out of phase operation
  • Pre-biased output startup capability
  • Low-side driver for synchronous operation
  • 2% output voltage accuracy (over temperature)
  • 500kHz (MIC24421) and 1MHz (MIC24420) switching frequency
  • Output voltage sequencing
  • Programmable max current limit
  • Power good output
  • Ramp Control™ provides soft-start
  • Low-side current sensing allows very low duty-cycle
  • Works with ceramic output capacitors
  • 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 MIC24420/MIC24421 are synchronous PWM dual output step down converters with internal 2.5A high-side switches. The MIC24420/MIC24421 has an integrated low-side gate driver for synchronous step-down conversion by connecting an external N-channel MOSFET to achieve high efficiencies in low duty-cycle applications.

The MIC24420 switching frequency is 1MHz and the MIC24421 switching frequency is 500kHz. A patented control scheme allows the use of a wide range of output capacitance from small ceramic capacitors to large electrolytic types with only one compensation component. A 2% output voltage tolerance over the temperature range allows the maximum level of system performance. The MIC24420/MIC24421 power good signal allows full control for sequencing the output voltages with minimum external components.

An adjustable current limit allows the use of smaller inductors in lower current applications. The MIC24420/MIC24421 has an operating junction temperature range of -40°C to +125°C.

Additional Features
    • 4.5V to 15V input voltage range
    • Adjustable output voltages down to 0.7V
    • 2.5A per channel
    • 180° out of phase operation
    • Pre-biased output startup capability
    • Low-side driver for synchronous operation
    • 2% output voltage accuracy (over temperature)
    • 500kHz (MIC24421) and 1MHz (MIC24420) switching frequency
    • Output voltage sequencing
    • Programmable max current limit
    • Power good output
    • Ramp Control™ provides soft-start
    • Low-side current sensing allows very low duty-cycle
    • Works with ceramic output capacitors
    • Junction temperature range of -40°C to +125°C
Parametrics
Name
Value
Vout Max (V)
10.5V
Type
PMIC
VIN Max (V)
15
VIN Min (V)
4.5

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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
MIC24420YML-TR
0.042200
0.204000
24
VQFN
4x4x0.9mm
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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