Product details

Input voltage (type) DC/DC Topology Buck Vin (Min) (V) 4.5 Vin (Max) (V) 60 Iout (Max) (A) 0.45 Iq (Typ) (mA) 2.65 Features Enable/Shutdown, Integrated Switch, Thermal Shutdown Operating temperature range (C) -40 to 125 Dimming method Analog, PWM
Input voltage (type) DC/DC Topology Buck Vin (Min) (V) 4.5 Vin (Max) (V) 60 Iout (Max) (A) 0.45 Iq (Typ) (mA) 2.65 Features Enable/Shutdown, Integrated Switch, Thermal Shutdown Operating temperature range (C) -40 to 125 Dimming method Analog, PWM
TO-PMOD (NDW) 7 140 mm² 10.16 x 13.77
  • Integrated All Power Components Including the Power Inductor
  • Wide Input Voltage Range : 4.5V - 60V
  • Constant Switching Frequency at 800kHz
  • High Contrast Ratio (Minimum Dimming Current Pulse width < 16µs)
  • Drives up to 16 LEDs in series at 60V input
  • ±3.5% Typical LED Current Accuracy
  • LED Current Adjustable from 300mA to 450mA
  • Up to 95% Efficiency
  • TPS92551 Modules can be Connected in Parallel for Higher Current Operation
  • Input Under-Voltage Lock-Out (UVLO)
  • Compatible with Ceramic and Low ESR Capacitors
  • Low Electro Magnetic Interference (EMI) Complies with EN55015 Standard EN55015, refer to and
  • LED Open and Short Circuit Protections
  • Thermal Shutdown and RoHS Compliant
  • -40˚C to +125˚C Junction Temperature Range

Package Highlights

  • 7-Lead Easy-to-Use Package (Similar to TO-263)
  • Single Exposed Die Attach Pad for Enhanced Thermal Performance
  • 10.2 x 13.8 x 4.6 mm Package

All trademarks are the property of their respective owners.

  • Integrated All Power Components Including the Power Inductor
  • Wide Input Voltage Range : 4.5V - 60V
  • Constant Switching Frequency at 800kHz
  • High Contrast Ratio (Minimum Dimming Current Pulse width < 16µs)
  • Drives up to 16 LEDs in series at 60V input
  • ±3.5% Typical LED Current Accuracy
  • LED Current Adjustable from 300mA to 450mA
  • Up to 95% Efficiency
  • TPS92551 Modules can be Connected in Parallel for Higher Current Operation
  • Input Under-Voltage Lock-Out (UVLO)
  • Compatible with Ceramic and Low ESR Capacitors
  • Low Electro Magnetic Interference (EMI) Complies with EN55015 Standard EN55015, refer to and
  • LED Open and Short Circuit Protections
  • Thermal Shutdown and RoHS Compliant
  • -40˚C to +125˚C Junction Temperature Range

Package Highlights

  • 7-Lead Easy-to-Use Package (Similar to TO-263)
  • Single Exposed Die Attach Pad for Enhanced Thermal Performance
  • 10.2 x 13.8 x 4.6 mm Package

All trademarks are the property of their respective owners.

The TPS92551 Constant Current Buck LED Driver Micro-Module drives maximum 450mA LED current up to 16 LEDs in a single string (maximum 23W). It integrates all the power components including the power inductor. The TPS92551 provides a full turn-key, highly efficient solution for wide range of single string LED lighting applications with up to 95% power efficiency. It accepts an input voltage ranging from 4.5V to 60V and delivers a 350mA LED current as default. The LED current is adjustable from 300mA to 450mA by charging a single external resistor.

The module operates at constant switching frequency (800kHz) with low Electro Magnetic Interference(EMI) complying with EN55015 standard. The module has fast control loop to realize fine LED current pulse yielding 256–step PWM dimming resolution at 240Hz for general lighting. Protection features include thermal shutdown, input under-voltage lockout, LED open-circuit and short-circuit protections. The TPS92551 Micro-Module is available in 7-pin PFM power package.

The TPS92551 Constant Current Buck LED Driver Micro-Module drives maximum 450mA LED current up to 16 LEDs in a single string (maximum 23W). It integrates all the power components including the power inductor. The TPS92551 provides a full turn-key, highly efficient solution for wide range of single string LED lighting applications with up to 95% power efficiency. It accepts an input voltage ranging from 4.5V to 60V and delivers a 350mA LED current as default. The LED current is adjustable from 300mA to 450mA by charging a single external resistor.

The module operates at constant switching frequency (800kHz) with low Electro Magnetic Interference(EMI) complying with EN55015 standard. The module has fast control loop to realize fine LED current pulse yielding 256–step PWM dimming resolution at 240Hz for general lighting. Protection features include thermal shutdown, input under-voltage lockout, LED open-circuit and short-circuit protections. The TPS92551 Micro-Module is available in 7-pin PFM power package.

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Technical documentation

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Type Title Date
* Data sheet TPS92551 450mA 23W Const Current Buck LED Driver Micro-Module datasheet (Rev. C) 01 May 2013
White paper Common LED Functions and LED Driver Design Considerations 21 Sep 2020
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Technical article Here's how body electronics and lighting technology are changing the driving experience 26 Sep 2016
Technical article LED brightness adjustment: high-frequency PWM dimming 26 Aug 2016
Technical article Take better selfies with innovative LED flashes 18 Nov 2014
Technical article Solving the automotive EMI issues in new cars with all the screens 11 Sep 2014
User guide AN-2194 TPS92551 450mA 60V LED Driver Micro-Module Eval Board (Rev. A) 01 May 2013

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TPS92551 PSpice Transient Model TPS92551 PSpice Transient Model

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