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LM2756TMEV

Multi-Display Inductorless LED Driver with 32 Exponential Dimming Steps in micro SMD

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LM2756TMEV

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Overview

The LM2756 is a highly integrated, switched-capacitor, multi-display LED driver that can drive up to 8 LEDs in parallel with a total output current of 180mA. Regulated internal current sources deliver excellent current and brightness matching in all LEDs

The LM2756 is a highly integrated, switched-capacitor, multi-display LED driver that can drive up to 8 LEDs in parallel. The regulated internal current sources on the evaluation boards are set-up to deliver 20mA to each LED delivering excellent current and brightness matching. Utilizing the I 2 C compatible interface, the user can configure the LM2756 evaluation board to drive the eight LEDs in any of the numerous LED group configurations (4:3:1, 5:2:1, 6:1:1, etc.).

Features
  • Drives up to 8 LEDs with up to 30mA of Diode Current each
  • 32 Exponential Dimming Steps with 800:1 Dimming Ratio for Group A (Up to 6 LEDs)
  • 8 Linear Dimming States for Groups B (Up to 3 LEDs) and D1C (1 LED)
  • Programmable Auto-Dimming Function
  • 3 Independently Controlled LED Groups Via I 2C Compatible Interface
  • Up to 90% Efficiency
  • Total Solution Size <21mm2
  • Low Profile 20 Bump micro SMD Package (1.615mm x 2.015mm x 0.6mm)
  • 0.4% Accurate Current Matching
  • Internal Soft-Start Limits Inrush Current
  • True Shutdown Isolation for LEDs
  • Wide Input Voltage Range (2.7V to 5.5V)
  • Active High Hardware Enable

Applications:

  • Dual Display LCD Backlighting for Portable Applications
  • Large Format LCD Backlighting
  • Display Backlighting with Indicator Light

 
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LM2756 — Multi-display inductorless LED driver with 32 exponential dimming steps in micro SMD
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Evaluation board

LM2756TMEV — Multi-Display Inductorless LED Driver with 32 Exponential Dimming Steps in micro SMD

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Technical documentation

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Type Title Date
* Application note LM2756 Multi-Display Inductorless LED Driver w/32 Exp Dimming Steps in SMD (Rev. A) 30 Apr 2013
Certificate LM2756TMEV EU Declaration of Conformity (DoC) 02 Jan 2019

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