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Product Overview

The LM3552SDEV is an evaluation board for LM3552, a fixed frequency, current mode step up DC to DC converters with two integrated NFETs that can be used for precision LED brightness control The devices are capable of driving loads up to 1A from a single cell Li ion battery. The LM3552 can drive one or more high current flash LEDs either in a high power flash mode or a lower power torch mode using the torch/flash pin. A programmable timeout function on the FTO pin forces the internal NFETs to turn off after a certain user defined time. An EN pin is available to put the device into low power shutdown mode. During shutdown, the feedback resistors and the load are disconnected from the input to avoid leakage current paths to ground. User programmable soft start circuitry has been integrated to eliminate large inrush currents at start up. Over voltage protection circuitry and a 1.25MHz switching frequency allow for the use of small, low cost output capacitors with lower voltage ratings.
  • Up to 1A total drive current
  • Flash timeout protection
  • Independent torch/flash/shutdown modes
  • LED disconnect in shutdown
  • Programmable soft start limits inrush current
  • Over voltage protection
  • Wide voltage range 2.7V to 5.5V
  • 1.25MHz constant switching frequency
  • Small, low profile package, non pullback LLP14 (4mm x 4mm)


Power Management; Portable Devices; LED Lighting; Imaging, Video & Vision
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Product Information

  • Core Chip LM3552
  • Device Topology Boost (Step Up)
  • No. of Outputs 1Outputs
  • Output Current 1A
  • Output Voltage -
  • Input Voltage Min 2.7V
  • Input Voltage Max 5.5V
  • Dimming Control Type -
  • Kit Contents Eval Board LM3552
  • Product Range -
  • Input Voltage 2.7V to 5.5V
  • SVHC No SVHC (15-Jun-2015)
  • Topology Boost (Step Up)

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Minimum order quantity: 1

Order multiple quantity: 1

Price: $148.90 $148.9



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