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TPS61194

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Low-EMI, high-performance 4-channel LED driver

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Data sheet

TPS61194

ACTIVE
Data sheet Order now

Product details

Number of channels 4 Topology Boost Rating Catalog Operating temperature range (°C) -40 to 85 Vin (min) (V) 4.5 Vin (max) (V) 40 Vout (min) (V) 6 Vout (max) (V) 45 Iout (max) (A) 0.4 Iq (typ) (mA) 5 Switching frequency (max) (kHz) 2200 Features Adjustable Switch Frequency, Global dimming, Integrated Switch
Number of channels 4 Topology Boost Rating Catalog Operating temperature range (°C) -40 to 85 Vin (min) (V) 4.5 Vin (max) (V) 40 Vout (min) (V) 6 Vout (max) (V) 45 Iout (max) (A) 0.4 Iq (typ) (mA) 5 Switching frequency (max) (kHz) 2200 Features Adjustable Switch Frequency, Global dimming, Integrated Switch
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • Input voltage operating range 4.5 V to 40 V
  • Four high-precision current sinks
    • Current matching 1% (typical)
    • LED string current up to 100 ma per channel
    • Outputs can be combined externally for higher current per string
  • 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
    • Spread spectrum for lower EMI
  • Extensive fault detection features
    • Fault output
    • Input voltage OVP and UVLO
    • Open and shorted LED fault detection
    • Thermal shutdown
  • Minimum number of external components
  • Input voltage operating range 4.5 V to 40 V
  • Four high-precision current sinks
    • Current matching 1% (typical)
    • LED string current up to 100 ma per channel
    • Outputs can be combined externally for higher current per string
  • 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
    • Spread spectrum for lower EMI
  • Extensive fault detection features
    • Fault output
    • Input voltage OVP and UVLO
    • Open and shorted LED fault detection
    • Thermal shutdown
  • Minimum number of external components

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

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

The TPS61194 has wide input voltage range from 4.5 V to 40 V for robust support of different types of applications. The TPS61194 integrates extensive fault detection features. The device supports PWM brightness dimming ratio of 10 000:1 for 100-Hz input PWM frequency.

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

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

The TPS61194 has wide input voltage range from 4.5 V to 40 V for robust support of different types of applications. The TPS61194 integrates extensive fault detection features. The device supports PWM brightness dimming ratio of 10 000:1 for 100-Hz input PWM frequency.
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Technical documentation

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* Data sheet TPS61194 High-Performance Four-Channel LED Driver datasheet (Rev. D) PDF | HTML 27 May 2021
Application note Some Guidelines and Tips for the LED Driver Application 14 Aug 2019
EVM User's guide Using the TPS61194xEVM Evaluation Module 05 Jan 2016

Design & development

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Evaluation board

TPS61194EVM — TPS61194 4-Channel LED Driver Evaluation Module

The TPS61194EVM evaluation module (EVM) helps designers evaluate the operation and performance of this device.  The  TPS61194EVM uses the TPS61194 to drive up to 4 LED strings (up to 12 LEDs each, 36 LEDs together) for LCD backlighting with high efficiency.  Information about output (...)

User guide: PDF
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Simulation model

TPS61194 Boost and SEPIC Unencrypted PSpice Transient Model Package (Rev. B)

SNVMAZ4B.ZIP (185 KB) - PSpice Model
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
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