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Home > Embedded ICs > Embedded - Microcontroller Unit (MCU) > TPS61194PWPR
Texas Instruments

TPS61194PWPR

TPS61194PWPR

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TPS61194PWPR Overview

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Description

The TPS61194 is a high-efficiency, low-EMI, easy-to-use LEDdriver with flexibility to support a wide range of applications. It has four high-precision currentsinks that can be combined for higher current capability.

The TPS61194 has an integrated DC-DC supporting both boost andSEPIC mode operation. The converter has adaptive output voltage control based on the LED currentsink headroom voltages. This feature minimizes the power consumption by adjusting the voltage tolowest sufficient level in all conditions. For EMI control the DC-DC converter supports spreadspectrum for switching frequency and an external synchronization with dedicated pin.

The TPS61194 has wide input voltage range from4.5V to 40 V for robust support of different types of applications. The TPS61194integrates extensive fault detection features. The device supports PWM brightness dimming ratio of10 000:1 for 100-Hz input PWM frequency.

Features

  • Input Voltage Operating Range 4.5 V to 40 V
  • Four High-Precision Current Sinks
    • CurrentMatching 1% (Typical)
    • LED String Current up to 100 mA perChannel
    • Outputs can be Combined Externally for Higher Current perString
  • High Dimming Ratio of 10 000:1 at 100 Hz
  • Integrated Boost/SEPIC Converter for LED String Power
    • Output Voltage up to 45 V
    • Switching Frequency 300 kHz to 2.2 MHz
    • Switching Synchronization Input
    • SpreadSpectrum for Lower EMI
  • Extensive Fault Detection
    • Fault Output
    • Input Voltage OVP and UVLO
    • Open and Shorted LED FaultDetection
    • Thermal Shutdown
  • Minimum Number of External Components

Specifications

Circuit Diagram

TPS61194PWPR

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