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LM2794 - Current Regulated Switched Capacitor LED Driver

Download the LM2794 datasheet PDF. This datasheet also covers the LM2 variant, as both devices belong to the same current regulated switched capacitor led driver family and are provided as variant models within a single manufacturer datasheet.

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

  • n Regulated current sources with ± 0.5% matching between any two outputs n High efficiency 3/2 boost function n Drives one, two, three or four white LEDs n 2.7V to 5.5V Input Voltage n Up to 80mA output current n Analog brightness control n Active-low or high shutdown input (’94/95) n Very small solution size and no inductor n 2.3µA (typ. ) shutdown current n 325kHz switching frequency (min. ) n Constant Frequency generates predictable noise spectrum n Standard Micro SMD-14 package: 2.08mm X 2.403.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LM2-794.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
LM2794 Current Regulated Switched Capacitor LED Supply Texas Instruments
LM2795 Current Regulated Switched Capacitor LED Supply Texas Instruments
LM27951 white-LED Driver Texas Instruments
LM27952 white-LED Driver Texas Instruments
LM2796 Dual-Display White LED Driver Texas Instruments

Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
LM2791 Current Regulated Switched Capacitor LED Driver
LM2792 Current Regulated Switched Capacitor LED Driver
LM2793 Low Noise White LED Driver
LM27951 White LED Adaptive 1.5X/1X Switched Capacitor Current Driver
LM27952 White LED Adaptive 1.5X/1X Switched Capacitor Current 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 Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control May 2003 LM2794/LM2795 Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control 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. The switching frequency is 325kHz. (min.) to keep the conducted noise spectrum away from sensitive frequencies within portable RF devices. Brightness can be controlled by both linear and PWM techniques. A voltage between 0V and 3.