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MICREL IC Integrated Circuit Chip MIC3172YM
$ 12 .35
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The MIC2172 and MIC3172 are complete 100kHz SMPS
current-mode controllers with internal 65V 1.25A power
switches. The MIC2172 features external frequency
synchronization or frequency adjustment, while the
MIC3172 features an enable/shutdown control input.
Although primarily intended for voltage step-up
applications, the floating switch architecture of the
MIC2172/3172 makes it practical for step-down, inverting,
and Cuk configurations as well as isolated topologies.
Operating from 3V to 40V, the MIC2172/3172 draws only
7mA of quiescent current making it attractive for battery
operated supplies.
The MIC3172 is for applications that require on/off control
of the regulator. The MIC3172 is externally shutdown by
applying a TTL low signal to EN (enable). When disabled,
the MIC3172 draws only leakage current (typically less
than 1µA). EN must be high for normal operation. For
applications not requiring control, EN must be tied to VIN or
TTL high.
The MIC2172 is for applications requiring two or more
SMPS regulators that operate from the same input supply.
The MIC2172 features a SYNC input which allows locking
of its internal oscillator to an external reference. This
makes it possible to avoid the audible beat frequencies
that result from the unequal oscillator frequencies of
independent SMPS regulators.
A reference signal can be supplied by one MIC2172
designated as a master. To insure locking of the slave’s
oscillators, the reference oscillator frequency must be
higher than the slave’s. The master MIC2172’s oscillator
frequency is increased up to 135kHz by connecting a
resistor from SYNC to ground (see applications
information).
The MIC2172/3172 is available in an 8-pin plastic DIP or
SOIC for –40°C to +85°C operation.
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Reviews
- R
Ronald W McKenna
Jul 07, 2025
MICREL IC Integrated Circuit Chip MIC3172YMTrying this for the first time, and I’m on board!HelpfulUnhelpful - C
Cynthia Tessler
Nov 08, 2024
MICREL IC Integrated Circuit Chip MIC3172YMWonderful website, always has my desired items at the best costs.HelpfulUnhelpful - E
Everardo Sagarnaga
Sep 26, 2024
MICREL IC Integrated Circuit Chip MIC3172YMIt's wonderful to know these items are always available.HelpfulUnhelpful - N
Nate Johnson
Mar 22, 2024
MICREL IC Integrated Circuit Chip MIC3172YMIt was simple and straight forward.HelpfulUnhelpful - A
Anonymous user
Nov 25, 2022
MICREL IC Integrated Circuit Chip MIC3172YMAll was ok! No problems whatsoever.HelpfulUnhelpful
MICREL IC Integrated Circuit Chip MIC3172YM
$ 12 .35
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✔ In Stock (Can ship in 5-7 days)
Quantity
MOQ : 26
Payment Methods
-
Online Support 24/7
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12 Months Warranty for New Products
-
30 Days Money Back Guarantee
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