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Overview
| Topology | Flyback Converter |
| Input voltage | 10-100 V |
| Switching frequency | 80-250 kHz |
| Output 1 | 12 V / 3.8 A |
| IC revision | LT3748EMS |
Description
The LT®3748 is a switching regulator controller specificallydesigned for the isolated flyback topology and capable ofhigh power. It drives a low side external N-channel powerMOSFET from an internally regulated 7V supply. No thirdwinding or opto-isolator is required for regulation as thepart senses the isolated output voltage directly from theprimary-side flyback waveform.
Features
- 5V to 100V Input Voltage Range
- 1.9A Average Gate Drive Source and Sink Current
- Boundary Mode Operation
- No Transformer Third Winding or Opto-Isolator Required for Regulation
- Primary-Side Winding Feedback Load Regulation
- VOUT Set with Two External Resistors
- INTVCC Pin for Control of Gate Driver Voltage
- Programmable Soft Start
- Programmable Undervoltage Lockout
- Available in MSOP Package
Typical applications
- High Power Automotive Supplies
- Isolated Industrial Power Supplies
- Telecom and Industrial
- Military and High Temperature Applications
More information
Products
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
 | 750311590 | SPEC | |
| 750311607 | SPEC | |
| 750311594 | SPEC | |
| 750311424 | SPEC | |
| 750311456 | SPEC | |
| 750311439 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | L (µH) | n | ISAT (A) | LS (µH) | VT (V (AC)) | Size | IC Reference | Samples |
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