Texas Instruments TPS92630QPWPRQ1

Overview

TPS92630QPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive three-channel linear LED driver with independent analog current setting (via REF pin) and per-channel PWM dimming. It delivers up to 150 mA per channel (450 mA in parallel mode), features ±1.5% channel current accuracy above 30 mA, and supports open/short LED and thermal fault detection for DRL, rear lighting, and interior LED systems.

For engineers reviewing the TPS92630QPWPRQ1 datasheet, TPS92630QPWPRQ1 pinout, TPS92630QPWPRQ1 application, or TPS92630QPWPRQ1 equivalent, key selection considerations include its 5 V–40 V input range, HTSSOP-16 thermally enhanced package, dual fault reporting (FAULT/FAULT_S), thermal foldback programmability via TEMP pin, and compatibility with common-cathode LED string topologies.

Technical Context

The TPS92630QPWPRQ1 integrates three high-side linear current regulators sharing a single external reference resistor (R_REF) to set output current. Each channel uses independent PWM inputs (PWM1–PWM3) for precise dimming control and shutdown capability, with logic thresholds of 1.135 V–1.283 V and built-in hysteresis (44 mV).

Fault management employs two dedicated open-drain outputs: FAULT reports open-load, short-to-ground, and thermal shutdown events; FAULT_S isolates single-LED short failures. Both support bus-mode connection across up to 15 devices, with deglitch timers (1–3 ms) and cycle-based detection (7 consecutive PWM cycles) to suppress false triggers.

Key Specifications

Pinout & Package

Package: 16-pin HTSSOP (PWP) with exposed thermal pad (4.40 mm × 5.00 mm); thermal pad must be soldered to GND for thermal performance (R_θJA = 41.5°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar three-channel linear LED driver applications.

Compared with TPS92630QPWPRQ1, TPS92633QPWPRQ1 extends input range and current capability while maintaining pin compatibility, whereas AL8863T-13 reduces diagnostic depth and channel count to meet basic compliance at lower cost - trade-offs center on fault granularity and thermal management flexibility.

Availability

TPS92630QPWPRQ1 is available at Aetrix Electronics and suitable for automotive LED lighting applications requiring stable component supply, AEC-Q100 qualification, and long-term production continuity - including daytime running lights, rear combination lamps, interior ambient lighting, and fog light modules.

Supply support for TPS92630QPWPRQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in automotive-grade power management and LED driver solutions.

The TPS926xx-Q1 product line targets automotive exterior and interior LED lighting, emphasizing diagnostic completeness, thermal resilience, and AEC-Q100 compliance for safety-critical illumination systems.

FAQ

What is the maximum input voltage the TPS92630QPWPRQ1 can withstand without damage?

The TPS92630QPWPRQ1 has an absolute maximum input voltage rating of 45 V for durations up to 200 ms, making it robust against automotive load-dump transients. Under continuous operation, the recommended input range is 5 V–40 V. Exceeding 45 V, even briefly, risks permanent damage per the Absolute Maximum Ratings table in the datasheet.

How does the TPS92630QPWPRQ1 achieve current matching between its three output channels?

The TPS92630QPWPRQ1 achieves ±1.5% channel current accuracy above 30 mA by using a shared precision voltage reference (1.222 V ±2.3 mV) and matched internal current mirror circuitry. All three channels derive their regulated current from the same REF pin and internal K_I ratio (100), minimizing process- and temperature-induced mismatches across channels and devices.

Can the TPS92630QPWPRQ1 drive LED strings with different numbers of LEDs per channel?

Yes, the TPS92630QPWPRQ1 supports mixed LED configurations - e.g., one channel driving two LEDs and another driving three - due to its high-side current source architecture and wide dropout margin (0.9 V at 150 mA). The device regulates current independently per channel regardless of forward voltage differences, ensuring consistent brightness without cross-channel interference.

What happens to the TPS92630QPWPRQ1 outputs during thermal shutdown?

Before reaching thermal shutdown (155°C–170°C), the TPS92630QPWPRQ1 initiates thermal foldback starting at 95°C–125°C (programmable via TEMP pin), linearly reducing output current to prevent shutdown. If junction temperature exceeds the shutdown threshold, all IOUTx outputs disable completely and the FAULT pin asserts low; recovery occurs only after temperature falls below the hysteresis threshold (15°C below shutdown point).

Is the TPS92630QPWPRQ1 compatible with CAN or LIN communication buses?

No, the TPS92630QPWPRQ1 is a standalone analog/PWM-controlled LED driver with no integrated CAN, LIN, or other serial communication interface. It interfaces directly with microcontroller GPIOs for EN and PWM signals and reports faults via open-drain pins (FAULT/FAULT_S); external MCU firmware handles protocol translation if bus communication is required.