Analog Devices Inc. LT3750EMS#PBF

The LT3750 controls a flyback power stage to charge a capacitor rapidly to a user-set voltage. Boundary-mode operation turns the external NMOS back on after transformer current has decayed, helping reduce switching transition loss. The target is set by transformer turns ratio and external resistors; the controller senses the output indirectly on the primary side, without an output-side high-voltage divider. The CHARGE input starts or stops a cycle, while the open-collector DONE output reports the reached target or certain faults.

The registered catalog package is 10-MSOP, corresponding to the manufacturer's 10-lead plastic MS package. The source catalog also describes the footprint as 10-TFSOP/10-MSOP, 0.118 inch (3.00 mm) width. Use the controlled Analog Devices MS-package drawing and its latest recommended PCB land pattern rather than treating a generic MSOP drawing as sufficient.

Layout checks

• Confirm ten-pin orientation and the MS package drawing.
• Keep SOURCE sense routing short and away from gate switching current.
• Provide the local VCC and VTRANS bypassing specified in the datasheet.
• Observe high-voltage clearance and creepage requirements in the external power stage.

The registered 10-MSOP JPG is missing locally and returns HTTP 404 on the production site. This draft is not publishable until the actual package image is restored and verified.

These pin numbers and functions are taken from the LT3750 10-lead MSOP pin diagram and pin-function section. Check the latest datasheet before final schematic release.

DONE can also assert for fault conditions; interpret it together with the commanded state and circuit design.

Typical values are not guaranteed limits. The datasheet electrical table states VCC = VTRANS = 5 V and TA = 25 °C unless another condition is given; use its full conditions for design margins.

The manufacturer also lists LT3750EMS#TRPBF as a tape-and-reel order option. Packaging method alone does not establish inventory availability or substitute approval. Related controllers such as LT3750A require a full review of pinout, threshold behavior, MOSFET drive, transformer design, package, temperature grade, and qualification. No unverified internal product link or unconditional drop-in claim is made here.

Analog Devices lists LT3750EMS#PBF as a production part model and supplies the LT3750 controller datasheet and MS-package information. The #PBF suffix denotes the lead-free order option in the manufacturer's ordering guidance. Consult the current controlled documentation and applicable product-change notices before qualification.

Check the full order code, package marking, lead-free suffix, traceability, and documentation during incoming inspection. The part listing does not by itself establish suitability for a particular high-voltage assembly, safety approval, or authorized-channel provenance. Verify the actual device and application independently.

High-voltage capacitors can retain hazardous energy after shutdown. Design discharge paths, insulation, protective spacing, fault handling, and safe servicing for the complete equipment. Use the current Analog Devices datasheet and your own electrical, thermal, and safety tests as the design authority. Publication is blocked until the registered production package JPG is accessible and correct.