Datasheet4U Logo Datasheet4U.com

LM2794 - Current Regulated Switched Capacitor LED Supply

General Description

The LM2794/95 is a fractional CMOS charge-pump that provides four regulated current sources.

It accepts an input voltage range from 2.7V to 5.5V and maintains a constant current determined by an external sense resistor.

The LM2794/5 delivers up to 80mA of load current to accommodate four White LEDs.

Key Features

  • 1.
  • 2 Regulated Current Sources with ±0.5% Matching between any Two Outputs.
  • High Efficiency 3/2 Boost Function.
  • Drives One, Two, Three or four White LEDs.
  • 2.7V to 5.5V Input Voltage.
  • Up to 80mA Output Current.
  • Analog Brightness Control.
  • Active-Low or High Shutdown Input ('94/95).
  • Very Small Solution Size and no Inductor.
  • 2.3µA (typ. ) Shutdown Current.
  • 325kHz Switching Frequency (min. ).
  • Constant Freq.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
LM2794 Current Regulated Switched Capacitor LED Driver National Semiconductor
LM2791 Current Regulated Switched Capacitor LED Driver National Semiconductor
LM2792 Current Regulated Switched Capacitor LED Driver National Semiconductor
LM2793 Low Noise White LED Driver National Semiconductor
LM27951 White LED Adaptive 1.5X/1X Switched Capacitor Current Driver National Semiconductor

Other Datasheets by Texas Instruments

Part Number Description
LM2795 Current Regulated Switched Capacitor LED Supply
LM27951 white-LED Driver
LM27952 white-LED Driver
LM2796 Dual-Display White LED Driver
LM27964 White LED Driver

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LM2794, LM2795 www.ti.com SNVS168L – JANUARY 2002 – REVISED MAY 2013 LM2794 /LM2795 Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control Check for Samples: LM2794, LM2795 FEATURES 1 •2 Regulated Current Sources with ±0.5% Matching between any Two Outputs • High Efficiency 3/2 Boost Function • Drives One, Two, Three or four White LEDs • 2.7V to 5.5V Input Voltage • Up to 80mA Output Current • Analog Brightness Control • Active-Low or High Shutdown Input ('94/95) • Very Small Solution Size and no Inductor • 2.3µA (typ.) Shutdown Current • 325kHz Switching Frequency (min.) • Constant Frequency Generates Predictable Noise Spectrum • Thin DSBGA Package: 2.08mm X 2.403mm X 0.