Texas Instruments TPS92640PWPR/NOPB

Mfr. Part

TPS92640PWPR/NOPB

Manufacturer

Luminary Micro/Texas Instruments. Y-IC is a quality distributor of Texas Instruments products and we will provide you with the best products and services.

Detailed Description

High-voltage LED driver controller for buck (step-down) topologies. Operates from 7 V to 85 V input, drives a single LED string using an external MOSFET and sense resistor. Supports both analog and PWM dimming, up to 1 MHz switching, and is designed for harsh automotive environments. Supplied in a compact 14-HTSSOP PowerPAD package for improved thermal performance.

Key Features

Wide supply range: 7 V to 85 V

Topology: Buck (step-down) LED current controller

External switch: uses an external N-MOSFET (no internal power FET)

Dimming: analog dimming and PWM dimming supported

Switching frequency: up to 1 MHz for smaller magnetics and lower EMI bands

Single output channel

Operating junction temperature: -40°C to +125°C (automotive-grade range)

Protection features typically supported by this class of device: UVLO, output overvoltage monitoring, current regulation with external sense (see datasheet for details)

RoHS status: RoHS3 compliant

Key Advantages

Very wide input voltage window enables direct use on automotive battery rails and industrial buses

High-efficiency current regulation with external MOSFET sized to your power level

Flexible dimming (analog and PWM) for precise brightness control and compatibility with lighting systems

1 MHz operation helps reduce inductor and capacitor size, saving board space

HTSSOP PowerPAD package improves heat dissipation for higher reliability

Proven Texas Instruments LED lighting ecosystem, tools, and application notes simplify design and compliance

Packaging

Delivery format: Tape & Reel (TR) for automated SMT assembly

Package type: 14-HTSSOP (PowerTSSOP-14) with exposed thermal pad (PowerPAD)

Body width: 4.40 mm nominal; lead pitch: 0.65 mm (industry standard for HTSSOP-14)

Pin configuration: 14 leads plus exposed thermal pad; see datasheet for full pinout and pad connection

Material: Lead-free, RoHS3-compliant molded plastic package with plated leads

Thermal characteristics: Exposed pad provides low thermal impedance path to PCB; actual θJA/θJC depend on layout and copper area (see datasheet for values and layout guidance)

Electrical properties (summary): VIN 7–85 V, controller drives external MOSFET/diode, programmable switching up to 1 MHz, single LED channel, analog/PWM dimming

Lifecycle

Status: Active per last available manufacturer information; not near discontinuation as of the latest update

Direct family and close alternatives (verify electrical limits and pinout before substitution):

- TPS92640-Q1: Automotive-qualified variant of the same family

- LM3409/LM3409-Q1: High-voltage buck LED controller (external MOSFET), 6–75 V input class

- TPS92515/TPS92516: Buck LED drivers with integrated FETs (lower VIN range), simpler BOM

- TPS92692-Q1: Flexible buck/boost/buck-boost LED controller for wider output voltage ranges

- TPS40210: Wide-input current-mode controller often used for LED buck solutions

If you need a drop-in equivalent or cannot find a suitable alternative, please contact our sales team via the Y-IC website for tailored recommendations

Key Application Areas

Automotive lighting: headlights, DRL, fog lamps, turn signals, tail and brake lights

Industrial and commercial lighting: machine vision, high-bay/low-bay, task lighting

Outdoor and signage: street lighting (with buck stage), architectural lighting, billboards

Transportation and off-road equipment lighting

Any high-voltage single-string LED driver requiring robust dimming and high efficiency

Datasheet

Our website hosts the most authoritative datasheet for TPS92640PWPR/NOPB. We recommend downloading it directly from this page to ensure you have the latest specifications, pinout, thermal data, and design guidelines.

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