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MIC2165

28V Synchronous Buck Controllers Featuring Adaptive ON-Time Control and Hyper Light Load™

Status: In Production

Features:

  • Hyper Speed Control™ architecture enables
  • High VIN/Low VOUT operation (VIN=28V and VOUT=0.8V)
  • Smallest output capacitance
  • HyperLight Load® Efficiency
  • Built-in 5V regulator for single-supply operation
  • Any Capacitor™ stable
  • Zero ESR to high ESR
  • Power-Good output
  • Input voltage range: 4.5V to 28V
  • 5 µA typical shutdown current
  • 25A output current drive capability
  • Adjustable output from 0.8Vto 5.5V with ±1% FB Accuracy
  • 600kHz switching frequency
  • Internal 5ms digital soft start
  • Thermal shutdown and "hiccup" current limit protection
  • No external current-sense resistor required
  • Safe start-up into pre-biased loads
  • 10-pin MSOP ePad 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 MIC2165 is a synchronous adaptive on-time buck controller targeting high performance, cost sensitive applications such as set-top boxes, gateways, routers, computing peripherals, and telecom/networking equipment.

The MIC2165 operates over a supply range of 4.5V to 28V. It has an internal linear regulator which provides a regulated 5V supply to power the internal control circuitry. MIC2165 operates at a constant 600kHz switching frequency and can be used to drive up to 25A of output current. The output voltage is adjustable from 0.8V to 5.5V.

A unique Hyper Speed Control™ architecture enables ultra-fast transient response while reducing the output capacitance and also makes High VIN/Low VOUT operation possible.

A UVLO feature is provided to ensure proper operation under power-sag conditions to prevent the external power MOSFET from over heating. Also, a soft start feature is provided to reduce the inrush current. Short current sensing on the bottom MOSFET with hiccup mode operation ensures protection in case of an output short circuit. Further, the MIC2165 includes an EN pin to shut down the converter and a Power Good (PGOOD) pin to allow simple sequencing.

The MIC2165 is available in a 10-pin MSOP ePad package with a junction operating temperature range from -40°C to +125°C.

Additional Features
    • Hyper Speed Control™ architecture enables
      • High VIN/Low VOUT operation (VIN=28V and VOUT=0.8V)
      • Smallest output capacitance
    • HyperLight Load® Efficiency
    • Built-in 5V regulator for single-supply operation
    • Any Capacitor™ stable
      • Zero ESR to high ESR
    • Power-Good output
    • Input voltage range: 4.5V to 28V
    • 5 µA typical shutdown current
    • 25A output current drive capability
    • Adjustable output from 0.8Vto 5.5V with ±1% FB Accuracy
    • 600kHz switching frequency
    • Internal 5ms digital soft start
    • Thermal shutdown and "hiccup" current limit protection
    • No external current-sense resistor required
    • Safe start-up into pre-biased loads
    • 10-pin MSOP ePad package
    • -40°C to +125°C junction temperature range
Parametrics
Name
Value
Supported Topologies
Sync. Buck
Supported Outputs
1
Minimum Input Voltage (V)
4.5
Maximum Input Voltage (V)
28
Minimum Output Voltage (V)
0.8
Maximum Output Voltage (V)
5.5
PFM, Discontinuous, Hyperlight load, or Skip Mode
True
Typical Tolerance (%)
±1
Duty Cycle Max (%)
0.82
Operating Frequency (Hz)
600K
Power Good Signal
True
Soft Start
True
Internal Voltage Bias
True
Enable Pin
True
Current Limit / Short Circuit Protection
True
Input UVLO Typ (V)
4.2
Operating Supply Current (mA)
0.45
Iq Off (µA)
5
Package
10/MSOP

Documents

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Software Libraries
Analog Simulation - MIC2165

The Micrel MIC2165 is a synchronous adaptive on-time buck controller targeting high performance, cost sensitive applications such as set-top boxes, gateways, routers, computing peripherals, and...

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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
MIC2165YMME
0.024800
0.135600
10
MSOP
3x3x1.0mm
Matte Tin
e3
MIC2165YMME-TR
0.024800
0.206148
10
MSOP
3x3x1.0mm
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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