TEXAS INSTRUMENTS  LM3552SDEV  Evaluation Board, LED Flash Driver, 1 Output, LM3552

Manufacturer Part No:
Newark Part No.:
Technical Datasheet:
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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)


Product Information

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

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