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LT8301IS5 DataSheet

LT8301IS5 DataSheet

Part No.
Part Marking
–40°C to 125°C
5-Lead Plastic TSOT-23
File Size
1164 KB
24 Pages
Linear Technology
Upload Time
2022-05-16 14:51:07
Update Time
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LT8301IS5 Features

■ 2.7V to 42V Input Voltage Range
■ 1.2A, 65V Internal DMOS Power Switch
■ 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

LT8301IS5 Applications

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

LT8301IS5 Description

LT8301IS5 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 component 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.

LT8301IS5 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.

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