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Analog Devices LT3757AIDD#PBF — Analog & Data Acquisition
Analog Devices

LT3757AIDD#PBF Boost/Flyback/SEPIC Controller, 2.9V-40V

MPNLT3757AIDD#PBF
End of Life

Analog Devices LT3757AIDD#PBF current-mode PWM controller, boost/flyback/SEPIC topologies, 2.9V to 40V supply, 100kHz to 1MHz switching, -40°C to 125°C, 10-DFN (3x3) package.

$6.44Ref. price · indicative, final on quote
LT3757AIDD#PBF datasheet
Packaging10-WFDFN Exposed Pad
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

LT3757AIDD#PBF Technical Specifications
ParameterValue
Output typeTransistor Driver
Mounting typeSurface Mount
Voltage - supply (Vcc (Vdd))2.9V ~ 40V
Frequency100kHz ~ 1MHz
Number of outputs1
Output phases1
Operating temperature-40°C ~ 125°C (TJ)
PackageTube
FunctionStep-Up, Step-Up/Step-Down
TopologyBoost, Flyback, SEPIC
Clock syncYes
Case10-WFDFN Exposed Pad
Control featuresEnable, Frequency Control, Soft Start
Output configurationPositive and Negative
Synchronous rectifierNo

Product details

Multi-topology current-mode controller for 2.9V to 40V rails

The Analog Devices LT3757AIDD#PBF is a current-mode PWM controller that handles boost, flyback, and SEPIC topologies from a single 2.9V to 40V supply rail. It drives an external transistor (no synchronous rectifier) and delivers a single output configurable for positive or negative polarity. The 100kHz to 1MHz switching range lets you trade inductor size against efficiency, and the clock sync input keeps multiple rails phase-aligned on dense boards. Control features include enable, frequency control, and soft start.

Package and temperature grade for industrial and automotive use

Housed in a 10-WFDFN exposed pad package (3x3 mm, DFN-10), the LT3757AIDD#PBF is surface-mount and suited for compact power stages. The exposed pad needs a solid thermal via stitch to the ground plane to keep junction temperature in check at higher switching frequencies.

Lifecycle and sourcing posture

It is ROHS3 compliant.

Frequently asked questions

Can LT3757AIDD#PBF be used for a boost converter with synchronous rectification?

No, the LT3757AIDD#PBF does not include a synchronous rectifier driver. It is a transistor-driver output controller intended for use with an external MOSFET and diode. For synchronous rectification, you would need a different controller that provides a second gate drive output.