LM2793 - 具有双功能亮度控制的低噪声白光 LED 恒流电源

LM2793是TI德州仪器公司的一款背光产品，LM2793是具有双功能亮度控制的低噪声白光 LED 恒流电源，本站介绍了LM2793的封装应用图解、特点和优点、功能等，并给出了与LM2793相关的TI元器件型号供参考。

LM2793 - 具有双功能亮度控制的低噪声白光 LED 恒流电源 - 背光 - LED驱动器 - 德州仪器

产品描述

The LM2793 is a highly efficient, semi-regulated 1.5x CMOS charge pump that provides dual constant current outputs. The LM2793 has an input voltage range of 2.7V to 5.5V.

To control LED brightness, the amount of current driven to the current-mode outputs can be adjusted with an analog voltage and/or a pulse-width-modulated (PWM) square wave.

Pre-regulation of the charge pump minimizes conducted noise on the input. Combined with a fixed switching frequency of 500kHz, the LM2793 is a low-noise solution.

The LM2793 is available in a 10-pin WSON.

产品特性

Two Regulated Current Outputs, up to 16mA Each, Matched to Within ±0.3% (typ.)
High Efficiency, 1.5× Regulated Charge Pump
Input Voltage Range: 2.7V to 5.5V
Soft Start Limits Inrush Current
Analog Voltage Brightness Control
PWM Brightness Control
Very Small Solution Size - NO INDUCTOR
500kHz Switching Frequency
3µA (typ.) Shutdown Current
10-Pin WSON Package: 3.0mm X 3.0mm X 0.8mm

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