MIC45205-1: 26V 6A DC-to-DC Power Module

Key Features
  • No compensation required
  • Up to 6A output current
  • >93% peak efficiency
  • Output voltage: 0.8V to 5.5V with ±1% accuracy
  • Adjustable switching frequency from 200kHz to 600kHz
  • Enable input and open-drain power good output
  • Hyper Speed Control (MIC45205-2) architecture enables fast transient response
  • HyperLight Load (MIC45205-1) improves light load efficiency
  • Supports safe startup into pre-biased output
  • CISPR22, Class B compliant
  • –40°C to +125°C junction temperature range
  • Thermal-shutdown protection
  • Short-circuit protection with hiccup mode
  • Adjustable current limit
  • Available in 52-pin 8mm × 8mm × 3mm QFN package
Typical Application

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Related Information

Data Sheet
Product Brief
Eval Boards or Kit
Software Package / Kit
Application Notes
Package Outlines
MICRELSim Center
Distributor Stock Check
Free Samples
Press Release
Related Literature
  • High power density point-of-load conversion
  • Servers, routers, and base stations
  • FPGAs, DSP, and low-voltage ASIC power supplies
  • Industrial and medical equipment

General Description

Micrel’s MIC45205 is a 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; simplifying the design and layout process for the end user.

This highly-integrated solution expedites system design and improves product time-to-market. The internal MOSFETs and inductor are optimized to achieve high efficiency at a low output voltage. The fully-optimized design can deliver up to 6A current under a wide input voltage range of 4.5V to 26V, without requiring additional cooling.

The MIC45205-1 uses Micrel’s HyperLight Load® (HLL) MIC45205-2 uses Micrel’s Hyper Speed Control™ architecture which enables ultra-fast load transient response, allowing for a reduction of output capacitance. The MIC45205 offers 1% output accuracy that can be adjusted from 0.8V to 5.5V with two external resistors. Additional features include thermal shutdown protection, input undervoltage lockout, adjustable current limit, and short circuit protection. The MIC45205 allows for safe start-up into a pre-biased output.

Ordering Information
Part Number Switching Freq. Junction Temp. Range Features Package Lead Finish
MIC45205-1YMP 200kHz to 600kHz -40°C to +125°C HyperLight Load® 52-Pin 8mm x 8mm QFN Pb-Free
MIC45205-2YMP 200kHz to 600kHz -40°C to +125°C Hyper Speed Control™ 52-Pin 8mm x 8mm QFN Pb-Free

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