MIC3172YN

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Details for Microchip Technology

MIC3172YN

1.25A 100kHz Switching Regulator
Buy Directly from Microchip Technology (6148 in Stock)
$2.0000 per unit
Series Information for MIC3172YN - Microchip Technology

Features

  • feature
    3V to 40V input voltage range
  • feature
    7mA quiescent current (operating)
  • feature
    <1u00b5A quiescent current, shutdown mode (MIC3172)
  • feature
    Current-mode operation
  • feature
    External frequency synchronization (MIC2172)
  • feature
    External frequency trim (MIC2172)
  • feature
    Fits most LT1
  • feature
    Internal cycle-by-cycle current limit
  • feature
    Low external parts count
  • feature
    Operates in most switching topologies
  • feature
    TTL shutdown compatibility (MIC3172)
  • feature
    Thermal shutdown

Description

DC/DC CONV 100KHZ 85DEG C
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.

Specifications

Topology:
Boost Buck Cuk Flyback Inverting SEPIC
Input Voltage Min:
3V
Input Voltage Max:
40V
No. of Outputs:
1Outputs
DC / DC Converter IC Case:
DIP
No. of Pins:
8Pins
Output Current:
1.25A
Output Voltage Min:
3.6V
Output Voltage Max:
65V
Switching Frequency:
100kHz
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
SVHC:
No SVHC (27-Jun-2018)

Alternate Descriptions

Avnet America

1.25A 100KHZ SWITCHING REGULATOR

Microchip Technology Inc

1.25A 100kHz Switching Regulator

Future Electronics

MIC3172 Series 40 V 100 kHz 1.25 A SMT Buck/Boost Switching Regulator - PDIP-8