LT8301IS5#WTRPBF ADI Switching Voltage Regulators 42VIN uP No-Opto Iso Fly Conv w/ 65V/1.2

  LT8301IS5#WTRPBF ADI Switching Voltage Regulators 42VIN uP No-Opto Iso Fly Conv w/ 65V/1.2

1.FEATURES

2.7V to 42V Input Voltage Rangen
1.2A, 65V Internal DMOS Power Switchn
Low Quiescent Current
100μA in Sleep Mode
350μA in Active Mode
Boundary Mode Operation at Heavy Load
Low-Ripple Burst Mode® Operation at Light Load
Minimum Load <0.5% (Typ) of Full Output
VOUT Set with a Single External Resistor
No Transformer Third Winding or Opto-Isolator Required for Regulation
Accurate EN/UVLO Threshold and Hysteresis
Internal Compensation and Soft-Start
Output Short-Circuit Protection
5-Lead TSOT-23 Package
AEC-Q100 Qualified for Automotive Applications

2.APPLICATIONS

Isolated Telecom, Automotive, Industrial, Medical Power Supplies
Isolated Auxiliary/Housekeeping Power Supplies

3.DESCRIPTION

The LT®8301 is a micropower isolated flyback converter. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or opto-isolator for regulation. The output voltage is programmed with a single external resistor. Internal compensation and soft-start further reduce external com-ponent count. Boundary mode operation provides a small magnetic solution with excellent load regulation. Low ripple Burst Mode operation maintains high efficiency at light load while minimizing the output voltage ripple. A 1.2A, 65V DMOS power switch is integrated along with all high voltage circuitry and control logic into a 5-lead ThinSOT™ package

The LT8301 operates from an input voltage range of 2.7V to 42V and can deliver up to 6W of isolated output power. The high level of integration and the use of boundary and low ripple burst modes result in a simple to use, low component count, and high efficiency application solution for isolated power delivery

4.TYPICAL APPLICATION

5.BLOCK DIAGRAM

6.