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Analog Devices LT3755EMSE-1#WPBF — Analog & Data Acquisition

LT3755EMSE-1#WPBF DC DC Controller, AEC-Q100, 100kHz-1MHz

MPNLT3755EMSE-1#WPBF
End of Life

Analog Devices LT3755EMSE-1#WPBF, DC DC Controller, Automotive AEC-Q100, Dimming Analog/PWM, Topology Flyback/SEPIC/Buck/Boost, Frequency 100kHz~1MHz, 1 Output, No Internal Switch, Supply 4.5V~40V, -40°C~125°C, 16-MSOP-EP.

$9.21Ref. price · indicative, final on quote
Analog Devices LT3755EMSE-1#WPBF datasheet (PDF)
Packaging16-TFSOP (0.118", 3.00mm Width) Exposed Pad
RoHSROHS3 Compliant
SeriesAutomotive, AEC-Q100
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LT3755EMSE-1#WPBF specifications
ParameterValue
TypeDC DC Controller
SeriesAutomotive, AEC-Q100
MountingSurface Mount
Supply voltage4.5V
Frequency100kHz ~ 1MHz
I/O channels1
Operating temperature-40°C ~ 125°C (TJ)
DimmingAnalog, PWM
PackageTube
TopologyFlyback, SEPIC, Step-Down (Buck), Step-Up (Boost)
ApplicationsGeneral Purpose
Case16-TFSOP (0.118\", 3.00mm Width) Exposed Pad
Internal switchNo

Product details

Automotive LED controller with flexible topology

The controller drives an external N-channel MOSFET (no internal switch), so the output current is set by the external pass element and sense resistor, not limited by the IC package.

Switching frequency and dimming flexibility

For a compact automotive headlamp module, running at 1 MHz shrinks the magnetics; for a high-efficiency daytime-running-light design, 300 kHz cuts gate-drive losses. Dimming is supported in both analog and PWM modes — analog dimming adjusts the LED current linearly, while PWM dimming (via the PWM pin) gives a wide dimming ratio without color shift.

Temperature grade and package

Junction temperature range is -40°C to 125°C, covering under-hood and exterior lighting environments.

Frequently asked questions

Is LT3755EMSE-1#WPBF automotive qualified?

Yes, it is part of the Automotive series and is AEC-Q100 qualified, making it suitable for automotive lighting applications such as headlamps, daytime running lights, and interior lighting.

What are the equivalents or replacements for LT3755EMSE-1#WPBF?

A close functional peer is the LT3755IUD#PBF, which shares the same topology support, dimming modes, and supply range but comes in a different package (QFN vs MSOP-EP). The LT3756EMSE-1#PBF is a higher-voltage variant (6 V minimum supply) in the same MSOP-EP package. Neither is a drop-in replacement — verify the pinout and thermal pad layout before substituting.