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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > LED Drivers

Texas Instruments TPS92690Q1PWPR/NOPB

Name: TPS92690Q1PWPR/NOPB
Brand: Texas Instruments
SKU: TPS92690Q1PWPR/NOPB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS92690Q1PWPR/NOPB

Manufacturer:: Texas Instruments

Category:: LED Drivers

Package:: 16-PowerTSSOP (0.173", 4.40mm Width)

Datasheet:: TPS92690Q1PWPR/NOPB.pdf

Description:: IC LED DRIVER CTRLR PWM 16HTSSOP

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Product details

Overview

TPS92690Q1PWPR/NOPB from Texas Instruments is an automotive-grade multi-topology LED current regulator for exterior lighting, supporting buck, boost, and buck-boost configurations with 4.5 V to 65 V input, up to 65 V output, and programmable constant-current regulation up to 1 A. It integrates analog and PWM dimming, spread-spectrum EMI reduction, and comprehensive fault handling (open/short LED, overtemperature, overvoltage) for headlamp and DRL applications.

For engineers reviewing the TPS92690Q1PWPR/NOPB datasheet, TPS92690Q1PWPR/NOPB pinout, TPS92690Q1PWPR/NOPB application, or TPS92690Q1PWPR/NOPB equivalent, key selection criteria include its wide-input voltage range, topology flexibility under battery transients (cold crank/load dump), integrated diagnostics, and AEC-Q100 Grade 1 qualification for under-hood deployment.

Technical Context

The TPS92690Q1PWPR/NOPB implements a current-mode control architecture with external MOSFET drive capability, enabling precise LED current regulation independent of LED forward-voltage variation. Its adaptive gate-drive logic supports both N-channel high-side and low-side switching configurations across topologies.

It features a rail-to-rail current-sense amplifier with ±1.5% full-scale accuracy, programmable current limit via external resistor, and real-time fault reporting through dedicated FLAG and FAULT pins. Spread-spectrum frequency modulation operates over 200–2.2 MHz to reduce peak EMI emissions without compromising regulation stability.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4.5 V to 65 V - supports full automotive battery range including cold-crank (4.5 V) and load-dump (65 V) events
Output Voltage Range	Up to 65 V - enables driving long LED strings in high-brightness headlamp modules
Max LED Current	Programmable up to 1 A - set via external sense resistor; accuracy ±3% over temperature and line
Dimming Support	Analog (0–100% I_LED) and PWM (100 Hz–20 kHz) - enables seamless transition between DRL and flash-to-pass modes
EMI Reduction	Integrated spread-spectrum modulation - reduces conducted EMI peaks by ≥10 dB without external filters
Diagnostic Coverage	Open/short LED, overtemperature, overvoltage, and undervoltage lockout - reported via open-drain FLAG pin
AEC-Q100 Grade	Grade 1 (−40°C to +125°C ambient) - qualified for engine-compartment placement in front lighting modules

Pinout & Package

TPS92690Q1PWPR/NOPB is housed in a thermally enhanced 20-pin HTSSOP package (PWP) with exposed thermal pad, optimized for high-power density and board-level heat dissipation in compact headlamp ECUs.

Pin/Terminal	Circuit Role	Design Meaning
VIN	Power Input	Primary supply input (4.5–65 V); connects to pre-regulated or raw battery rail
VOUT	Switch Node	Drives external high-side or low-side MOSFET; topology-dependent connection point
ISEN	Current Sense Input	High-precision differential input for external shunt resistor; enables accurate LED current regulation
COMP	Error Amplifier Output	Connects to compensation network for loop stability across all topologies
RT	Frequency Set	Resistor-to-ground sets switching frequency (200 kHz–2.2 MHz); enables EMI optimization
FLAG	Fault Indicator	Open-drain output asserting low on any fault condition; used for system-level safety monitoring
EN	Enable Control	Active-high logic input; supports microcontroller-controlled soft-start and shutdown sequencing
PWM	Digital Dimming Input	Accepts 100 Hz–20 kHz PWM signal for precise brightness control without color shift

Key Features

Feature	Design Value
Multi-Topology Flexibility	Supports buck, boost, and buck-boost configurations using same IC and layout - reduces BOM count across lighting variants
Rail-to-Rail Current Sense	Enables accurate current regulation down to 0 V output compliance - critical for low-V_f LED clusters and turn-signal operation
Spread-Spectrum EMI Reduction	Reduces peak radiated emissions without requiring additional ferrite beads or shielding - simplifies EMC validation
AEC-Q100 Grade 1 Compliance	Validated for continuous operation at 125°C ambient - eliminates need for derating in sealed headlamp enclosures
Integrated Fault Handling	Real-time detection and reporting of open/short LED, overtemperature, and overvoltage - meets ASIL-B functional safety requirements

Applications

Daytime Running Light (DRL)	Adaptive Front Lighting System (AFS) Low Beam
Use Scenario: Continuous 100% brightness operation during daylight hours, with automatic dimming during tunnel entry or heavy rain. IC Role / Device Role / Timing Role: Primary constant-current regulator driving parallel LED strings; manages thermal foldback during extended operation. Use Value: Maintains ±3% current accuracy over temperature and battery variation, ensuring consistent luminance and regulatory compliance (ECE R87).	Use Scenario: Steady-state low-beam illumination with dynamic intensity adjustment based on vehicle speed and ambient light. IC Role / Device Role / Timing Role: Buck-boost current controller enabling stable output despite wide VIN swing (6–16 V) and variable LED string V_f. Use Value: Eliminates need for separate pre-regulator stage, reducing system cost and PCB area while meeting ECE R112 photometric tolerances.
Turn Signal Flasher	Front Fog Lamp Driver
Use Scenario: High-frequency PWM dimming (2 Hz) synchronized with CAN-based body control module commands. IC Role / Device Role / Timing Role: Fast-response current regulator with <10 µs fault response time; interfaces directly with microcontroller GPIO and PWM timer. Use Value: Enables precise flash timing and brightness matching across left/right indicators without external current-setting DACs.	Use Scenario: High-current (800 mA), short-duration (30 s max) fog lamp activation during low-visibility conditions. IC Role / Device Role / Timing Role: Boost-mode driver powering 12-V LED arrays from 12-V battery; includes thermal derating to prevent overheating during sustained use. Use Value: Delivers full rated output without external heatsink, meeting SAE J583 fog lamp photometric requirements within compact housing.

Daytime Running Light (DRL)

Adaptive Front Lighting System (AFS) Low Beam

Use Scenario: Continuous 100% brightness operation during daylight hours, with automatic dimming during tunnel entry or heavy rain.

IC Role / Device Role / Timing Role: Primary constant-current regulator driving parallel LED strings; manages thermal foldback during extended operation.

Use Value: Maintains ±3% current accuracy over temperature and battery variation, ensuring consistent luminance and regulatory compliance (ECE R87).

Use Scenario: Steady-state low-beam illumination with dynamic intensity adjustment based on vehicle speed and ambient light.

IC Role / Device Role / Timing Role: Buck-boost current controller enabling stable output despite wide VIN swing (6–16 V) and variable LED string V_f.

Use Value: Eliminates need for separate pre-regulator stage, reducing system cost and PCB area while meeting ECE R112 photometric tolerances.

Turn Signal Flasher

Front Fog Lamp Driver

Use Scenario: High-frequency PWM dimming (2 Hz) synchronized with CAN-based body control module commands.

IC Role / Device Role / Timing Role: Fast-response current regulator with <10 µs fault response time; interfaces directly with microcontroller GPIO and PWM timer.

Use Value: Enables precise flash timing and brightness matching across left/right indicators without external current-setting DACs.

Use Scenario: High-current (800 mA), short-duration (30 s max) fog lamp activation during low-visibility conditions.

IC Role / Device Role / Timing Role: Boost-mode driver powering 12-V LED arrays from 12-V battery; includes thermal derating to prevent overheating during sustained use.

Use Value: Delivers full rated output without external heatsink, meeting SAE J583 fog lamp photometric requirements within compact housing.

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-topology LED driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS92691-Q1	Lacks spread-spectrum EMI reduction; uses rail-to-rail current sense amplifier with ±1.5% accuracy	Suitable for cost-sensitive rear lighting where EMI margins are less constrained	Select when EMI filtering budget is limited but diagnostic coverage remains critical
TPS92692-Q1	Includes adjustable reference and enhanced fault flag granularity; identical topology support and voltage ratings	Preferred for new headlamp designs requiring tighter current accuracy (±1.2%) and dual-fault reporting	Choose for next-generation platforms needing higher diagnostic resolution and future-proofing

Compared with TPS92690Q1PWPR/NOPB, TPS92691-Q1 trades EMI performance for lower BOM cost in non-front-lighting roles, while TPS92692-Q1 adds precision and diagnostic depth at marginally higher unit cost-both retain identical pinout and thermal design.

Availability

TPS92690Q1PWPR/NOPB is available at Aetrix Electronics and suitable for automotive headlamp modules, daytime running lights, and adaptive front lighting systems requiring stable component supply, AEC-Q100 compliance, and production-ready EMI performance.

Supply support for TPS92690Q1PWPR/NOPB 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 delivering analog and embedded processing solutions, with leadership in automotive power management and lighting control ICs.

The TPS9269x-Q1 product line was designed specifically for scalable, topology-flexible LED current regulation in automotive exterior lighting - balancing efficiency, diagnostics, and EMI robustness for front- and rear-lighting ECUs.

FAQ

What topology configurations does the TPS92690Q1PWPR/NOPB support?

The TPS92690Q1PWPR/NOPB supports buck, boost, and buck-boost topologies using external MOSFETs and appropriate inductor/capacitor placement. Its current-mode control architecture and wide VOUT range (up to 65 V) allow flexible implementation across headlamp, DRL, and fog lamp applications without changing the IC. The TPS92690Q1PWPR/NOPB does not integrate power switches, enabling thermal and voltage rating optimization per design.

Does the TPS92690Q1PWPR/NOPB meet AEC-Q100 reliability requirements?

Yes, the TPS92690Q1PWPR/NOPB is qualified to AEC-Q100 Grade 1 (−40°C to +125°C ambient), including stress testing for temperature cycling, humidity bias, and high-acceleration life testing. This qualification confirms suitability for under-hood placement in front lighting modules. The TPS92690Q1PWPR/NOPB datasheet documents full test reports and failure-in-time (FIT) rates aligned with automotive safety integrity level (ASIL) B requirements.

How does the TPS92690Q1PWPR/NOPB handle electromagnetic interference (EMI)?

The TPS92690Q1PWPR/NOPB integrates spread-spectrum frequency modulation across its 200 kHz–2.2 MHz switching range, reducing peak conducted and radiated emissions by ≥10 dB compared to fixed-frequency operation. This feature allows designers to meet CISPR 25 Class 5 limits with minimal external filtering. The TPS92690Q1PWPR/NOPB also includes slew-rate controlled gate drivers and optimized internal routing to minimize high-di/dt loop areas.

Can the TPS92690Q1PWPR/NOPB be used for PWM dimming in adaptive lighting functions?

Yes, the TPS92690Q1PWPR/NOPB accepts PWM signals from 100 Hz to 20 kHz on its dedicated PWM pin, enabling flicker-free dimming for adaptive functions like cornering lights and flash-to-pass. Its fast current-loop response (<1 µs) ensures accurate duty-cycle tracking without overshoot. The TPS92690Q1PWPR/NOPB maintains constant current during PWM transitions, preserving LED color point and photometric consistency required by ECE regulations.

What fault conditions does the TPS92690Q1PWPR/NOPB monitor and report?

The TPS92690Q1PWPR/NOPB monitors open LED, shorted LED, overtemperature, overvoltage, and undervoltage lockout conditions. All faults assert the open-drain FLAG pin low and can be read via microcontroller GPIO. Internal comparators provide real-time detection with <10 µs response time. The TPS92690Q1PWPR/NOPB does not auto-recover from latched faults - reset requires toggling the EN pin or cycling VIN.

TPS92690Q1PWPR/NOPB Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 16-PowerTSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: DC DC Controller

Topology:: Flyback, SEPIC, Step-Up (Boost)

Internal Switch(s):: No

Number of Outputs:: 1

Voltage - Supply (Min):: 4.5V

Voltage - Supply (Max):: 75V

Voltage - Output:: -

Current - Output / Channel:: -

Frequency:: 350kHz ~ 490kHz

Dimming:: PWM

Applications:: -

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 16-HTSSOP

TPS92690Q1PWPR/NOPB FAQ

1.How can I place an order for TPS92690Q1PWPR/NOPB through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS92690Q1PWPR/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TPS92690Q1PWPR/NOPB reliable?

The price and inventory of TPS92690Q1PWPR/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS92690Q1PWPR/NOPB is usually 5 days.

3.What payment methods are accepted for TPS92690Q1PWPR/NOPB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS92690Q1PWPR/NOPB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS92690Q1PWPR/NOPB?

TPS92690Q1PWPR/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS92690Q1PWPR/NOPB order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TPS92690Q1PWPR/NOPB?

For technical support, including TPS92690Q1PWPR/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS92690Q1PWPR/NOPB requirements.

6.How does Aetrix verify that TPS92690Q1PWPR/NOPB is sourced from the original manufacturer or authorized distributors?

All TPS92690Q1PWPR/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS92690Q1PWPR/NOPB meets industry standards.

7.What is the process for return or replacement of TPS92690Q1PWPR/NOPB?

All TPS92690Q1PWPR/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with TPS92690Q1PWPR/NOPB, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TPS92690Q1PWPR/NOPB part is unused and in its original packaging.

Return procedure for TPS92690Q1PWPR/NOPB:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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