品牌索引
产品分类 > 小信号开关二极管> 瞬态电压抑制器TVS/ESD> 双极管二极管> 调谐二极管> 齐纳(稳压)二极管> 小信号肖特基二极管> 频带转换二极管> 中/高功率管> 射频PIN二极管> Sinterglass二极管> 整流器 > N沟道(N-Channel)> P沟道(P-Channel)> 双N沟道(Dual N-Channel)> 双P沟道(Dual P-Channel)> 双N和P沟道(Dual N and P-Channel)
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产品介绍 A8501
Features and Benefits ▪ 600 kHz to 2.2 MHz switching frequency—ability to operate above the AM band ▪ Internal bias supply for single-supply operation (VIN = 8 to 21 V) ▪ Boost converter with integrated 40 V DMOS switch and OVP–load-dump protection ▪ 3.5 μA shutdown current—limits battery drain ▪ Active current sharing between LED strings for 0.8% current matching and 0.7% accuracy ▪ Drive up to 9 series LEDs in 4 parallel strings, 36 LEDs maximum (Vf = 3.5 V, If = 100 mA) ▪ LED sinks rated for 100 mA each (400 mA total) ▪ PWM dimming with LED PWM duty cycle control ▪ 4000:1 dimming range ▪ Extensive fault mode protection schemes: ▫ Shorted LED protection against misconnected loads— with true output disconnect ▫ Open LED disconnect protects against LED failures ▫ External thermistor sensing to limit LED temperature ▫ Output overvoltage protection (OVP): 19.5 V default can be adjusted as high as 38 V ▫ Open Schottky and open OVP resistor protection against external component failure ▫ Input under- and overvoltage protection (UVLO and OVLO) against VIN variation ▫ Boost current limit, output short circuit limit, overtemperature protection (OTP), and soft start |
