Product details


Channels (#) 1 Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Switching frequency (Max) (kHz) 960 Product type Inductive LED current per channel (mA) 30 Shutdown current (Typ) (uA) 1 Topology Boost Peak efficiency (%) 94 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


  • 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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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
* Datasheet TPS61158 30-V WLED Driver with Integrated Power Diode datasheet (Rev. A) Jun. 18, 2015
Application notes Simple Backlight Driver Dimming Performance Mar. 20, 2017
Application notes Analog PWM Dimming in White-LED Drivers Dec. 21, 2016
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
Technical articles Take better selfies with innovative LED flashes Nov. 18, 2014
Technical articles Solving the automotive EMI issues in new cars with all the screens Sep. 10, 2014
User guides TPS61158EVM-565 User's Guide Aug. 23, 2013

Design & development

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