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Texas Instruments LM3502SQ-44 — Power Management (PMIC / Gate Driver)

LM3502SQ-44 DC-DC Regulator, 44V Boost, 1MHz, 16-WQFN

MPNLM3502SQ-44
Obsolete

Texas Instruments LM3502SQ-44, DC DC Regulator, Step-Up (Boost) topology, 44V output, 1MHz switching frequency, PWM dimming, 16-WFQFN Exposed Pad package.

Texas Instruments LM3502SQ-44 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM3502SQ-44 specifications
ParameterValue
TypeDC DC Regulator
MountingSurface Mount
Voltage - output44V
Supply voltage5.5V
Current - output (Channel)750mA (Switch)
Frequency1MHz
I/O channels2
Operating temperature-40°C~85°C(TA)
DimmingPWM
PackageTape & Reel (TR); Cut Tape (CT)
TopologyStep-Up (Boost)
ApplicationsBacklight
Case16-WFQFN Exposed Pad
Internal switchYes

Product details

44V boost regulator for LED backlight strings

The LM3502SQ-44: It integrates the switching FET internally and switches at 1 MHz, allowing small external inductor and capacitor values. Two independent outputs support dual LED strings or split backlight zones, each capable of sourcing up to 750 mA (switch current limit). PWM dimming is used to control LED brightness, compatible with common backlight controller interfaces.

Obsolete — sourcing via independent distribution

For existing BOM lines, procurement must go through independent distribution or surplus channels.

Frequently asked questions

What is the replacement for LM3502SQ-44?

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What are the specifications of LM3502SQ-44?

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