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Product details

Parameters

Number of channels (#) 1 Vin (Min) (V) 2.9 Vin (Max) (V) 18 Vout (Min) (V) 2.9 Vout (Max) (V) 38 Type Inductive Switching frequency (Max) (kHz) 2200 LED current per channel (mA) 400 Peak efficiency (%) 93 Topology Boost Operating temperature range (C) -40 to 85 open-in-new Find other Backlight LED drivers

Package | Pins | Size

HTSSOP (PWP) 14 32 mm² 5 x 6.4 open-in-new Find other Backlight LED drivers

Features

  • 2.9-V to 18-V Input Voltage Range
  • 3-A, 40-V Internal Power Switch
    • Four 3-W LEDs From 5-V Input
    • Eight 3-W LEDs From 12-V Input
  • High-Efficiency Power Conversion: Up to 93%
  • Frequency Set by External Resistor: 200 kHz to 2.2 MHz
  • User-Defined Soft Start Into Full Load
  • Programmable Overvoltage Protection
  • Analog and Pure PWM Brightness Dimming
  • 14-Pin HTSSOP Package With PowerPAD™
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Description

The TPS61500 is a monolithic switching regulator with integrated 3-A, 40-V power switch. It is an ideal driver for high brightness 1-W or 3-W LED. The device has a wide input voltage range to support application with input voltage from multi-cell batteries or regulated 5-V or 12-V power rails.

The LED current is set with an external sensor resistor R3, and the feedback voltage that is regulated to 200 mV by current mode PWM (pulse width modulation) control loop, as shown in Typical Application Circuit. The device supports analog and pure PWM dimming methods for LED brightness control. Connecting a capacitor to the DIMC pin configures the device to be used for analog dimming, and the LED current varies proportional to the duty cycle of an external PWM signal. Floating the DIMC pin configures the device for pure PWM dimming with the average LED current being the PWM signal’s duty cycle times a set LED current.

The device features a programmable soft-start function to limit inrush current during start-up, and it has other built-in protection features, such as pulse-by-pulse overcurrent limit, overvoltage protection, and thermal shutdown. The TPS61500 is available in 14-pin HTSSOP package with PowerPAD.

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Technical documentation

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Type Title Date
* Data sheet TPS61500 High-Brightness, LED Driver With Integrated 3-A, 40-V Power Switch datasheet (Rev. F) May 30, 2019
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 Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Application note TPS61500 SEPIC Configuration Apr. 05, 2018
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) Jun. 15, 2017
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
Application note Design considerations for a resistive feedback divider in a DC/DC converter Apr. 26, 2012
Application note Analog Dimming With the TPS61500 Using an Analog Input Signal Apr. 30, 2009
User guide TPS61500EVM-369 User's Guide Jul. 31, 2008
More literature Seminar 400 Topic 1 - Current-Mode Control of Switching Power Supplies Feb. 15, 2001

Design & development

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Hardware development

EVALUATION BOARD Download
49
Description

The TPS61500EVM-369 facilitates evaluation of the TPS61500 High Brightness LED Driver IC.

Design tools & simulation

SIMULATION TOOL Download
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 (...)
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
HTSSOP (PWP) 14 View options

Ordering & quality

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