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Product details

Parameters

Input voltage (type) DC/DC Vin (Min) (V) 4.5 Vin (Max) (V) 65 Iout (Max) (A) 5 Vout (Min) (V) 3 Vout (Max) (V) 65 Regulated outputs (#) 1 Topology Boost, Buck, Buck-Boost, Cuk, Flyback, Sepic Dimming method Analog, PWM Power factor correction (Min) Features Adjustable Switch Frequency, Synchronization Pin, Thermal Shutdown Operating temperature range (C) -40 to 125 Switching frequency (Min) (kHz) 80 Switching frequency (Max) (kHz) 1000 Iq (Typ) (mA) 1.5 Vref (V) 0.17 open-in-new Find other General lighting LED drivers

Package | Pins | Size

HTSSOP (PWP) 16 32 mm² 5 x 6.4 open-in-new Find other General lighting LED drivers

Features

  • Wide Input Voltage: 4.5 V to 65 V
  • Wide Output Voltage Range: 2 V to 65 V
  • Low Input Offset Rail-to-Rail Current Sense Amplifier
    • Better than ±3% LED Current Accuracy over 25°C to 140°C Junction Temperature Range
    • Compatible With High-Side and Low-Side Current Sense Implementations
  • High-Impedance Analog LED Current Adjust Input (IADJ) With over 15:1 Contrast Ratio
  • Over 1000:1 Series FET PWM Dimming Ratio With Integrated Series N-Channel Dim Driver Interface
  • Continuous LED Current Monitor Output for System Fault Detection and Diagnoses
  • Programmable Switching Frequency With External Clock Synchronization Capability
  • Programmable Soft-Start and Slope Compensation
  • Comprehensive Fault Protection Circuitry Including VCC Undervoltage Lockout (UVLO), Output Overvoltage Protection (OVP), Cycle-by-Cycle Switch Current Limit, and Thermal Protection
  • TPS92691-Q1: Automotive Q100 Grade 1 Qualified
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Description

The TPS92691/-Q1 is a versatile LED controller that can support a range of step-up or step-down driver topologies. The device implements a fixed-frequency peak current mode control technique with programmable switching frequency, slope compensation, and soft-start timing. It incorporates a high voltage (65-V) rail-to-rail current sense amplifier that can directly measure LED current using either a high-side or a low-side series sense resistor. The amplifier is designed to achieve low input offset voltage and attain better than ±3% LED current accuracy over junction temperature range of 25°C to 140°C and output common-mode voltage range of 0 to 60 V.

LED current can be independently modulated using either analog or PWM dimming techniques. Linear analog dimming response with 15:1 range is obtained by varying the voltage from 140 mV to 2.25 V across the high impedance analog adjust (IADJ) input. PWM dimming of LED current is achieved by modulating the PWM input pin with the desired duty cycle and frequency. Optional DDRV gate driver output can be used to enable series FET dimming functionality to get over 1000:1 contrast ratio.

The TPS92691/-Q1 supports continuous LED status check through the current monitor (IMON) output. This allows for LED short circuit or open circuit detection and protection. Additional fault protection features include VCC UVLO, output OVP, switch cycle-by-cycle current limit, and thermal protection.

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Technical documentation

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No results found. Please clear your search and try again. View all 7
Type Title Date
* Datasheet TPS92691/-Q1 Multi-Topology LED Driver With Rail-to-Rail Current Sense Amplifier datasheet Dec. 11, 2015
Technical articles Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical articles LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016
User guides TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board Mar. 11, 2016
Technical articles Driving LEDs: topology matters Feb. 26, 2016
User guides TPS92691 SEPIC LED Driver Evaluation Board Dec. 09, 2015
Technical articles Take better selfies with innovative LED flashes Nov. 18, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The TPS92691EVM-001 is a fully assembled and tested SEPIC LED driver designed to power a single string of series connected LEDs. Acurate closed-loop LED current regulation is achieved using a low-offset rail-to-rail curren sense amplifier that is compatible with either a high side or a low side (...)

Features
  • Versatile LED driver capable of driving a string of 1 to 20 series connected white LEDs
  • Wide input voltage range (4.5 V to 40 V): Supports automotive start-stop and load dump transients up to 65 Vmax
  • Compatible with high-side and low-side current sense resistor position
  • Simple circuit interface to set (...)
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The TPS92691EVM-752 is a fully assembled and tested LED driver that can be configured as either a boost or a boost-to-battery topology to power a single string of series-connected LEDs. Accurate closed-loop LED current regulation is achieved using a low-offset rail-to-rail current-sense amplifier (...)

Features
  • Versatile LED driver capable of driving a string of 1 to 20 series connected white LEDs
  • Wide input voltage range (4.5 V to 18 V): Supports automotive start-stop and load dump transients up to 65 Vmax
  • Better than +/-3% LED current regulation at room temperature using high-side current-sense resistor 
  • (...)

Design tools & simulation

SIMULATION MODELS Download
SLVMBE8A.ZIP (153 KB) - PSpice Model
CALCULATION TOOLS Download
SLVC671.ZIP (86 KB)

Reference designs

REFERENCE DESIGNS Download
Dimmable LED Driver Reference Design For Aftermarket Light Bars, Spot Lights, and Flood Lights
PMP15003 — This in an automotive boost LED driver designed to drive an LED string of up to 34V at a maximum of 34W of output power. This solution as designed passes CISPR 25 class 3 EMC requirements and is capable of 10:1 analog dimming. High side current sensing allows one end of the LED string to be tied to (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 16 View options

Ordering & quality

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