| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
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11,000 pcs
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11000 pcs | On Request | 1 | On Request | On Request | 2019+ | On Request | On Request |
| Category | |
| Manufacturer Name | |
| SVHC Present | |
| Tape & Reel |
The LT3748 from Analog Devices (formerly Linear Technology) is a high-voltage switching regulator controller specifically designed for the isolated flyback topology. It is capable of handling high power outputs, driving an external N-channel MOSFET from an internally regulated 7V supply. This controller does not require a third winding or opto-isolator for regulation, as it senses the isolated output voltage directly from the primary-side flyback waveform.
Operating in boundary mode, the LT3748 provides a compact magnetic solution without compromising load regulation. Its operating frequency is determined by the load current and transformer magnetizing inductance. The gate drive, combined with a suitable external MOSFET, allows for load power delivery up to several tens of watts from input voltages as high as 100V. The device is available in a 16-lead MSOP package with four leads removed.
Key features include a wide 5V to 100V input voltage range and an average gate drive source and sink current of 1.9A. The output voltage can be set using two external resistors, and the controller offers programmable soft start and undervoltage lockout features. The LT3748 is also AEC-Q100 qualified for automotive applications, making it suitable for isolated telecom converters, high power automotive supplies, isolated industrial power supplies, and military or high-temperature applications.
The input voltage range is 5V to 100V.
The average gate drive source and sink current is 1.9A.
The operating temperature range is -40°C to 125°C.
The package type is MSOP.
The RoHS status is RoHS3 Compliant.
The Moisture Sensitivity Level is 1 Unlimited.
The REACH status is REACH Unaffected.
