Intersil ISL97672BIRZ-T

Регулятор постоянного тока DC4.5V26.5V50 мА

Overview

The ISL97672BIRZ is an integrated 6-channel power LED driver for LCD backlight applications. The ISL97672BIRZ is capable of driving LEDs with an input from 4.5V to 26.5V and a maximum output up to 45V. The ISL97672BIRZ employs an adaptive boost switching architecture that allows direct PWM dimming with dimming duty cycle as low as 0.007% at 200Hz or 0.8% at 20kHz. PWM Dimming frequency can be as high as 30kHz.The ISL97672BIRZ employs dynamic headroom control that monitors the highest LED forward voltage string for output regulation to minimize headroom voltage and power loss in a typical multi-string operation. Typical current matching between channels is ±0.7%.The ISL97672BIRZ incorporates extensive protection functions that flag whenever a fault occurs. The protections include string-open and short-circuit detections, OVP, OTP, and an optional output short-circuit protection with external fault disconnect switch. The ISL97672BIRZ is offered in a compact 20 Ld QFN 3x4 package and can operate in ambient temperatures of -40°C to +85°C.

Features

Applications

• Street lighting
• Stage and Studio lighting
• Refrigeration lighting
• Portable lighting
• Gallery lighting
• Museum lighting
• High-end retail lighting
• Medical surgery lighting
• Replacement lamps
• Panel lighting