Product details


Channels (#) 2 Vin (Min) (V) 3 Vin (Max) (V) 6 Switching frequency (Max) (kHz) 1200 Product type Inductive LED current per channel (mA) 23 Shutdown current (Typ) (uA) 1.5 Topology Boost Peak efficiency (%) 85 Features Synchronous Rectification Operating temperature range (C) -40 to 85 open-in-new Find other Backlight LED drivers

Package | Pins | Size

VSON (DRC) 10 9 mm² 3.00 x 3.00 open-in-new Find other Backlight LED drivers


  • 2.5-V to 6-V Input Voltage Range
  • Two Outputs Each up to 27 V
  • 0.7-A Integrated Switch
  • Built-In Power Diode
  • 1.2-MHz Fixed PWM Frequency
  • Individually Programmable Output Current
  • Input-to-Output Isolation
  • Built-In Soft Start
  • Overvoltage Protection
  • Up to 83% Efficiency
  • Up to 30-kHz PWM Dimming Frequency
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The TPS6115x is a high-frequency boost converter with two regulated current outputs for driving WLEDs. Each current output can be individually programmed through external resistors. There is a dedicated selection pin for each output so the two outputs can be turned on separately or simultaneously. The output current can be reduced by a pulse width modulation (PWM) signal on SEL pins or an analog voltage on the ISET pins, resulting in PWM dimming of the WLEDs. The boost regulator runs at a 1.2-MHz fixed switching frequency to reduce output ripple and avoid audible noises associated with pulse frequency modulation (PFM) control.

The two current outputs are ideal for driving WLED backlights for the sub and main displays in clamshell phones. The two outputs can also be used for driving display and keypad backlights. When used together, the two outputs can drive up to 14 WLEDs for one large display.

In addition to the small inductor, small capacitor, and 3-mm × 3-mm VSON package, the built-in MOSFET and diode eliminate the need for any external power devices. Overall, the device provides an extremely compact solution with high efficiency and plenty of flexibility.

For all available packages, see the orderable addendum at the end of the data sheet.
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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 13
Type Title Date
* Datasheet TPS6115x Dual-Output Boost WLED Driver Using Single Inductor datasheet (Rev. E) Nov. 30, 2015
White paper Common LED Functions and LED Driver Design Considerations Sep. 21, 2020
Technical articles Overcoming challenges for backlight LED drivers in automotive display solutions Jul. 16, 2020
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Application note Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) Nov. 29, 2017
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) Jun. 15, 2017
Application note 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
Application note IQ: What it is, what it isn’t, and how to use it Jun. 17, 2011
User guide TPS61150EVM-150 (Rev. A) Oct. 26, 2006
Application note Minimizing Ringing at the Switch Node of a Boost Converter Sep. 15, 2006

Design & development

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Hardware development


The TPS61150EVM-150 is an evaluation tool for the TPS6115x family. This is a dual channel, single Inductor Boost Converter with two regulated current outputs for driving white LEDs. Each current output can be individually programmed through external resistors and is capable to drive 6 to 7 white (...)

  • Input Voltage: 3 V to 6 V
  • Output Voltage: up to 27 V each (max)
  • Switch current Limit: 0.7 A (max)
  • Efficiency: 83% (max)
  • 2 Individual programmable, regulated current Outputs
  • Built in Power Diode and Soft-start
  • Input to Output isolation
  • Over voltage and Short circuit protection
  • Built in 1.2 MHz fixed (...)

Design tools & simulation

PSpice® for TI design and simulation tool
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 (...)
  • 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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VSON (DRC) 10 View options

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