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Analog Devices LT8391AEFE#PBF — Discrete Semiconductors
Analog Devices

LT8391AEFE#PBF DC DC Controller, 60V Output, 28-TSSOP

MPNLT8391AEFE#PBF
End of Life

Analog Devices LT8391AEFE#PBF DC DC LED Driver Controller, Buck-Boost Topology, 60V Output, 600kHz-2MHz, Analog/PWM Dimming, 28-TSSOP-EP, -40°C to 125°C.

$9.28Ref. price · indicative, final on quote
LT8391AEFE#PBF datasheet
Packaging28-TSSOP (0.173", 4.40mm Width) Exposed Pad
StockContact for availability
Lead timeIn Stock wk
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

LT8391AEFE#PBF Technical Specifications
ParameterValue
TypeDC DC Controller
Mounting typeSurface Mount
Voltage - output60V
Voltage60V
Frequency600kHz ~ 2MHz
Number of outputs1
Operating temperature-40°C ~ 125°C (TJ)
DimmingAnalog, PWM
PackageTube
TopologyStep-Down (Buck), Step-Up (Boost)
ApplicationsAutomotive, Lighting
Case28-TSSOP (0.173\", 4.40mm Width) Exposed Pad
Internal switchNo

Product details

60V buck-boost LED controller with flexible dimming

The LT8391AEFE#PBF is a DC DC controller from Analog Devices designed for LED driving in automotive and lighting applications. It combines step-down (buck) and step-up (boost) topology in a single controller, regulating a constant-current LED string from input voltages between 4V and 60V. The controller supports both analog and PWM dimming, giving you the choice between smooth intensity control and high-ratio on/off dimming.

Package and thermal management for the 28-TSSOP-EP

Housed in a 28-lead TSSOP with an exposed pad (28-TSSOP-EP), the package measures 0.173" (4.40mm) wide. Since the controller has no internal switches, the external MOSFETs and inductor carry the load current.

Frequently asked questions

What is the LT8391AEFE#PBF's input voltage range and output capability?

The controller accepts a supply voltage from 4V to 60V and can regulate LED strings up to 60V output. It operates as a buck-boost controller, so it handles input voltages both above and below the output voltage.

What dimming methods does the LT8391AEFE#PBF support?

It supports both analog and PWM dimming. Analog dimming provides continuous current adjustment, while PWM dimming enables high-ratio on/off control for applications requiring precise brightness steps.

What package does the LT8391AEFE#PBF come in and can I hand-solder it?

It comes in a 28-lead TSSOP with an exposed pad (28-TSSOP-EP), 4.40mm wide. A stencil for the pad helps avoid voids.