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MIC2182

32V, Synchronous Buck Controller

Status: In Production

Features:

  • 4.5V to 32V Input voltage range
  • 1.25V to 6V Output voltage range
  • 95% efficiency
  • 300kHz oscillator frequency
  • Current sense blanking
  • 5ω impedance MOSFET Drivers
  • Drives N-Channel MOSFETs
  • 600µA typical quiescent current (skip-mode)
  • Logic controlled micropower shutdown (IQ <0.1µA)
  • Current-mode control
  • Cycle-by-cycle current limiting
  • Built-in undervoltage protection
  • Adjustable undervoltage lockout
  • Easily synchronizable
  • Precision 1.245V reference output
  • 0.6% total regulation
  • 16-pin SOP and SSOP packages
  • Frequency foldback overcurrent protection
  • Sustained short-circuit protection at any input voltage
  • 20A output current capability
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

MIC2182 is a synchronous buck (step-down) switching regulator controller. An all N-Channel synchronous architecture and powerful output drivers allow up to a 20A output current capabilty. The PWM and skip-mode control scheme allows efficiency to exceed 95% over a wide range of load current, making it ideal for battery powered applications, as well as high current distributed power supplies.

The MIC2182 operates from a 4.5V to 32V input and can operate with a maximum duty cycle of 86% for use in low-dropout conditions. It also features a shutdown mode that reduces quiescent current to 0.1µA.

The MIC2182 achieves high efficiency over a wide output current range by automatically switching between PWM and skip mode. Skip-mode operation enables the converter to maintain high efficiency at light loads by turning off circuitry pertaining to PWM operation, reducing the no-load supply current from 1.6mA to 600µA. The operating mode is internally selected according to the output load conditions. Skip mode can be defeated by pulling the PWM pin low which reduces noise and RF interference.

The MIC2182 is available in a 16-pin SOP (small-outline package) and SSOP (shrink small-outline package) with an operating range from -40°C to +85°C.

Additional Features
    • 4.5V to 32V Input voltage range
    • 1.25V to 6V Output voltage range
    • 95% efficiency
    • 300kHz oscillator frequency
    • Current sense blanking
    • 5ω impedance MOSFET Drivers
    • Drives N-Channel MOSFETs
    • 600µA typical quiescent current (skip-mode)
    • Logic controlled micropower shutdown (IQ <0.1µA)
    • Current-mode control
    • Cycle-by-cycle current limiting
    • Built-in undervoltage protection
    • Adjustable undervoltage lockout
    • Easily synchronizable
    • Precision 1.245V reference output
    • 0.6% total regulation
    • 16-pin SOP and SSOP packages
    • Frequency foldback overcurrent protection
    • Sustained short-circuit protection at any input voltage
    • 20A output current capability
Parametrics
Name
Value
Supported Topologies
Sync. Buck
Supported Outputs
1
Minimum Input Voltage (V)
4.5
Maximum Input Voltage (V)
32
Minimum Output Voltage (V)
1.25
Maximum Output Voltage (V)
6
PFM, Discontinuous, Hyperlight load, or Skip Mode
True
Typical Tolerance (%)
±1
Duty Cycle Max (%)
0.86
Operating Frequency (Hz)
300K
External Clock Sync
True
Soft Start
True
Internal Voltage Bias
True
Enable Pin
True
Current Limit / Short Circuit Protection
True
Input UVLO Typ (V)
2.5
Operating Supply Current (mA)
1.6
Iq Off (µA)
0.1
Package
16/SOP. 16/SSOP

Documents

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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
MIC2182YSM
0.139000
0.273507
16
SSOP
5.3mm
Matte Tin
e3
MIC2182-3.3YSM-TR
0.139000
0.812368
16
SSOP
5.3mm
Matte Tin
e3
MIC2182-5.0YSM
0.139000
0.273507
16
SSOP
5.3mm
Matte Tin
e3
MIC2182-5.0YSM-TR
0.139000
0.812368
16
SSOP
5.3mm
Matte Tin
e3
MIC2182-3.3YSM
0.139000
0.273507
16
SSOP
5.3mm
Matte Tin
e3
MIC2182YSM-TR
0.139000
0.812368
16
SSOP
5.3mm
Matte Tin
e3
MIC2182-3.3YM-TR
0.157400
0.307692
16
SOIC
.150in
Matte Tin
e3
MIC2182YM-TR
0.157400
0.307692
16
SOIC
.150in
Matte Tin
e3
MIC2182-5.0YM
0.157400
0.300000
16
SOIC
.150in
Matte Tin
e3
MIC2182-5.0YM-TR
0.157400
0.307692
16
SOIC
.150in
Matte Tin
e3
MIC2182-3.3YM
0.157400
0.300000
16
SOIC
.150in
Matte Tin
e3
MIC2182YM
0.157400
0.300000
16
SOIC
.150in
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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