Texas Instruments TPS92610QPWPRQ1

Overview

TPS92610QPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive single-channel high-side linear LED driver with integrated diagnostics, supporting 4.5 V–40 V input, ±4.6% current accuracy across –40°C to 150°C junction temperature, 450 mA max output, and single-LED short detection for rear lamp and dome light applications.

For engineers reviewing the TPS92610QPWPRQ1 datasheet, TPS92610QPWPRQ1 pinout, TPS92610QPWPRQ1 application, or TPS92610QPWPRQ1 equivalent, key selection criteria include dropout voltage at 300 mA (1.3 V), open-circuit/short-to-ground fault deglitch time (125 µs), DIAGEN-controlled low-dropout mode, one-fails–all-fail FAULT bus scalability to 15 devices, and HTSSOP-14 thermal performance (R_θJA = 52.4°C/W).

Technical Context

The TPS92610QPWPRQ1 implements a high-side constant-current architecture using an external R_SNS resistor to set output current via 98 mV regulation voltage (V_{CS_REG}). Its diagnostic engine monitors V(IN)–V(OUT) for open-circuit faults, V(OUT) for short-to-GND, and V(SSL)–V(SSH) for single-LED shorts - all with configurable deglitch timing (80–175 µs) and auto-recovery.

Functional safety support includes documented failure modes, FIT rate data, and diagnostic coverage analysis tools. The device operates in low-dropout mode when supply voltage falls below regulation headroom, with DIAGEN enabling/disabling open-circuit and single-LED-short detection to prevent false alarms during undervoltage conditions.

Key Specifications

Pinout & Package

TPS92610QPWPRQ1 is housed in a 14-pin HTSSOP package (5 mm × 4.4 mm) with exposed thermal pad for enhanced power dissipation in automotive lighting modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS92611QPWPRQ1, the TPS92610QPWPRQ1 offers simpler qualification for non-watchdog applications and lower system-level validation effort; versus TPS92630QPWPRQ1, it provides optimal cost and thermal performance for single-string implementations where channel independence is critical.

Availability

TPS92610QPWPRQ1 is available at Aetrix Electronics and suitable for automotive interior lighting, exterior signal lamps, and EV charging inlet indicators requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant traceability.

Supply support for TPS92610QPWPRQ1 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for automotive, industrial, and personal electronics markets.

The TPS92610QPWPRQ1 belongs to TI's automotive LED driver product line, designed specifically for ASIL-B-compliant exterior and interior lighting systems requiring high reliability, integrated diagnostics, and wide-input-voltage operation.

FAQ

What is the maximum continuous output current supported by the TPS92610QPWPRQ1?

The TPS92610QPWPRQ1 supports a maximum continuous output current of 450 mA, verified across its full operating junction temperature range (–40°C to 150°C) and input voltage range (4.5 V–40 V). This rating assumes proper PCB thermal design with the exposed thermal pad soldered to a sufficient copper area, as specified in the thermal metrics (R_θJB = 22°C/W). Exceeding 450 mA risks thermal shutdown activation at elevated ambient temperatures.

How does the DIAGEN pin affect fault detection behavior in the TPS92610QPWPRQ1?

The DIAGEN pin on the TPS92610QPWPRQ1 controls activation of open-circuit and single-LED-short diagnostics: when V_DIAGEN exceeds 1.2 V, both features operate normally; when below 1.1 V, they are disabled to prevent false alarms during low-dropout conditions. This allows the TPS92610QPWPRQ1 to maintain full output current even when supply voltage drops near the LED string's forward voltage, while retaining short-to-GND and overtemperature protection.

Can the TPS92610QPWPRQ1 be used in a one-fails–all-fail configuration with other LED drivers?

Yes, the TPS92610QPWPRQ1 supports one-fails–all-fail operation via its open-drain FAULT pin, which can be wired in parallel with up to 14 additional TPS9261x-Q1, TPS9263x-Q1, or TPS9283x-Q1 devices. When any device asserts FAULT (by pulling it low with 750 µA), the bus voltage falls below 0.7 V, causing all connected drivers to shut down their outputs - meeting stringent automotive fail-safe requirements for brake and turn signal lamps.

What is the purpose of the SSH and SSL pins on the TPS92610QPWPRQ1?

The SSH (single-LED short high-side) and SSL (single-LED short low-side) pins on the TPS92610QPWPRQ1 enable detection of a shorted LED within a multi-LED string. By connecting a resistor divider from OUT to GND with nodes at SSH and SSL, the device compares V_SSL – V_SSH to an internal 190 mV threshold. A violation indicates one LED has shorted, triggering automatic shutdown and retry - a capability not present in standard open/short detectors.

Does the TPS92610QPWPRQ1 require an external current-sense resistor, and what is its typical value range?

Yes, the TPS92610QPWPRQ1 requires an external high-side current-sense resistor (R_SNS) to set output current, as it regulates the voltage across this resistor to 98 mV (V_{CS_REG}). For the full 4–450 mA range, R_SNS values span 24.5 Ω (at 450 mA) to 24.5 kΩ (at 4 mA). A typical 350 mA design uses 280 mΩ, yielding 98 mV drop and dissipating 34.3 mW - well within standard 0805 or 1206 package ratings.