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Texas Instruments LP8551TLE/NOPB — Analog & Data Acquisition
Texas Instruments

LP8551TLE/NOPB LED Driver, DC-DC Boost Regulator, 40V Output

MPNLP8551TLE/NOPB
End of Life

Texas Instruments LP8551TLE/NOPB, DC DC Regulator LED Driver, Step-Up (Boost) topology, 4 outputs at 50 mA each, 40V output, PWM dimming, Surface Mount 25-WFBGA/DSBGA, -30°C to 85°C.

$2.77Ref. price · indicative, final on quote
LP8551TLE/NOPB datasheet
Packaging25-WFBGA, DSBGA
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.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

LP8551TLE/NOPB Technical Specifications
ParameterValue
TypeDC DC Regulator
Mounting typeSurface Mount
Voltage - output40V
Voltage2.7V
Current - output (Channel)50mA
Number of outputs4
Operating temperature-30°C ~ 85°C (TA)
DimmingPWM
PackageTape & Reel (TR); Cut Tape (CT)
TopologyStep-Up (Boost)
ApplicationsBacklight
Case25-WFBGA, DSBGA
Internal switchYes

Product details

Boost regulator for LED backlight strings

The LP8551TLE/NOPB is a DC-DC boost regulator for LED backlight applications. It integrates the switching FET internally. The part drives up to four LED strings at 50 mA each, with a maximum output voltage of 40 V. Dimming is via PWM. Input supply range is 2.7 V to 22 V.

Package and assembly considerations

The LP8551TLE/NOPB comes in a 25-bump DSBGA (25-DSBGA) — a fine-pitch wafer-level package. That means the PCB land pattern needs tight registration, and post-reflow X-ray inspection is the norm to confirm solder-joint integrity under each bump. It is surface-mount only; no socket option exists. The operating temperature range is -30°C to 85°C, which suits indoor commercial and industrial equipment but not under-hood automotive or extended outdoor exposure where -40°C is common.

Lifecycle and sourcing posture

This part carries an Active lifecycle status with ROHS3 compliance. The /NOPB suffix indicates lead-free / RoHS-compliant finish, which matches the ROHS3 rating.

Frequently asked questions

Does LP8551TLE/NOPB have an internal switch?

Yes, the LP8551TLE/NOPB integrates the switching FET internally, so no external MOSFET is needed for the boost converter.

What is a replacement for LP8551TLE/NOPB?

The LM2703MF-ADJ/NOPB is a single-output boost regulator for backlight applications, but it delivers 0.35 A on one channel versus the LP8551's four 50 mA channels. It is not a pin-compatible drop-in; the LP8551TLE/NOPB is the correct multi-string part. No direct second-source alternate is listed in the official cross-reference.