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Details for Microchip Technology


2.5A 200kHz Synchronous Switcher
Buy Directly from Microchip Technology (3558 in Stock)
$4.0700 per unit
Series Information for MIC2178YWM - Microchip Technology


  • feature
    100% duty cycle for low dropout operation
  • feature
    100mu2126 internal power MOSFETs at 12V input
  • feature
    200kHz preset switching frequency
  • feature
    Current limit
  • feature
    Current-mode control Simplified loop compensation Superior line regulation
  • feature
    Dual-mode operation for high efficiency (up to 96%) PWM mode for > 200mA load current Skip mode for < 200mA load current
  • feature
    Low quiescent current 1.0mA in PWM mode 600u00b5A in skip mode < 5u00b5A in shutdown mode
  • feature


BUCK 4.5-16.5V 2.5A 200KHZ 20WSOIC
The Micrel MIC2178 is a 200kHz synchronous buck (step- down) switching regulator designed for high-efficiency, bat- tery-powered applications. The MIC2178 operates from a 4.5V to 16.5V input and features internal power MOSFETs that can supply up to 2.5A output current. It can operate with a maximum duty cycle of 100% for use in low-dropout conditions. It also features a shutdown mode that reduces quiescent current to less than 5µA. The MIC2178 achieves high efficiency over a wide output current range by operating in either PWM or skip mode. The operating mode is externally selected, typically by an intelli- gent system, which chooses the appropriate mode according to operating conditions, efficiency, and noise requirements. The switching frequency is preset to 200kHz and can be synchronized to an external clock signal of up to 300kHz. The MIC2178 uses current-mode control with internal current sensing. Current-mode control provides superior line regula- tion and makes the regulator control loop easy to compen- sate. The output is protected with pulse-by-pulse current limiting and thermal shutdown. Undervoltage lockout turns the output off when the input voltage is less than 4.5V. The MIC2178 and is packaged in a 20-lead wide power SOIC package with an operating temperature range of –40°C to +85°C. See the MIC2177 for automatic selection of PWM or skip- mode operation.


Synchronous Buck (Step Down)
Input Voltage Min:
Input Voltage Max:
No. of Outputs:
DC / DC Converter IC Case:
No. of Pins:
Output Current:
Output Voltage Min:
Output Voltage Max:
Switching Frequency:
Operating Temperature Max:
Product Range:
Automotive Qualification Standard:
RoHS Phthalates Compliant:
MSL 1 - Unlimited
No SVHC (27-Jun-2018)
Operating Temperature Min:
Operating Temperature Range:
-40°C to +85°C
Primary Input Voltage:

Alternate Descriptions

Avnet America

SOIC 2.5A 200kHz Synchronous Switcher

Microchip Technology Inc

2.5A 200kHz Synchronous Switcher

Future Electronics

MIC2177 Series 16.5 V 200 kHz 2.5 A Synchronous Buck Regulator - SOIC-20W