AL1791中文资料Single-Channel Current-Ratio-Optimized LED Driver with Analog and PWM Dimming数据手册Diodes规格书

描述 Description

The AL1791, a single-channel LED driver with analog and PWM dimming control, is targeted for Tunable White/Color Smart Lighting application. It serves as the LED driving element along with AC-DC Power Conversion Block and Intelligent MCU as emerging smart light bulb configuration. The key merits attribute to cost-effectiveness, dimming performance, low standby power, ease of system implementation, and great scalability.

特性 Features

Input Voltage Range: 6.5V to 30V, 1-channel LED drivers: independent Analog or PWM dimming control for each channel
Reference Current: Adjustable by an external reference resistor
Ratio-optimized currents for 4 independent LED channels (AL1794 only): Suitable for Tunable White and Tunable Color
Low Standby Power: With EN pin
E-flicker free PWM dimming: Support 4KHz down to sub-1%
Internal Protections: Under Voltage Lockout (UVLO)
LED string open/short protection
Over temperature protection (OTP): Thermal fold-back and Thermal shut down
Fault Reporting: UVLO, OTP, Open, and Short
LED Power Good Reporting
Low system BOM cost
Ambient Temperature Range -40°C to +105°C

应用 Application

Tunable Color Smart LED Light Bulbs
Tunable White Smart LED Light Bulbs
Dimmable Smart LED Light Bulbs
LED Power Supply
Smart Lighting
DC-DC
LED Drivers

简介

AL1791属于集成电路（IC）的LED驱动器。由制造生产的AL1791LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。