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Product details

Parameters

Number of channels (#) 1 Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Vout (Min) (V) 2.7 Vout (Max) (V) 29 Type Inductive Switching frequency (Max) (kHz) 960 LED current per channel (mA) 30 Peak efficiency (%) 94 Topology Boost Features Enable/Shutdown, OVP, PWM Control, Soft Start, Thermal Shutdown Operating temperature range (C) -40 to 85 open-in-new Find other Backlight LED drivers

Package | Pins | Size

WSON (DRV) 6 4 mm² 2 x 2 open-in-new Find other Backlight LED drivers

Features

  • 2.7-V to 5.5-V Input Voltage Range
  • 28-V Open LED Protection (up to 8 LEDs)
  • Integrated 0.6-A, 30-V Internal Switch FET and
    Power Diode
  • 750-kHz Switching Frequency
  • Flexible Digital and PWM Brightness Control
    • 1-Wire Control Interface (EasyScale™)
    • PWM Dimming Control Interface
  • Up to 100:1 PWM Dimming Ratio
  • Integrated Loop Compensation
  • Built-in Soft Start
  • Built-in WLED Open protection
  • Thermal Shutdown
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Description

With a 30V-rated integrated switch FET and power diode, the TPS61158 is a boost converter that drives LEDs in series. The boost converter runs at 750-kHz fixed switching frequency to reduce output ripple, improve conversion efficiency, and allows for the use of small external components.

The default white LED current is set with the external sensor resistor RFB, and the feedback voltage is regulated to 200 mV, as shown in Typical Application. During the operation, the LED current can be controlled using the 1-wire digital interface (EasyScale™ protocol) through the CTRL pin. Alternatively, a pulse width modulation (PWM) signal can be applied to the CTRL pin through which the duty cycle determines the feedback reference voltage. In either digital or PWM mode, the TPS61158 does not burst the LED current; therefore, it does not generate audible noises on the output capacitor. For maximum protection, the device features integrated open LED protection that disables the TPS61158 to prevent the output voltage from exceeding the device absolute maximum voltage ratings during open LED conditions.

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Technical documentation

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Type Title Date
* Data sheet TPS61158 30-V WLED Driver with Integrated Power Diode datasheet (Rev. A) Jun. 18, 2015
White paper Common LED Functions and LED Driver Design Considerations Sep. 21, 2020
Technical article Overcoming challenges for backlight LED drivers in automotive display solutions Jul. 16, 2020
Application note Simple Backlight Driver Dimming Performance Mar. 20, 2017
Application note Analog PWM Dimming in White-LED Drivers Dec. 21, 2016
Technical article Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical article LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016
Technical article Take better selfies with innovative LED flashes Nov. 18, 2014
User guide TPS61158EVM-565 User's Guide Aug. 23, 2013

Design & development

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Software development

GUI FOR EVALUATION MODULE (EVM) Download
SLVC520.ZIP (401 KB)

Design tools & simulation

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PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
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CAD/CAE symbols

Package Pins Download
WSON (DRV) 6 View options

Ordering & quality

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