LED 驱动器

ADI公司为汽车和液晶背光照明应用提供发光二极管(LED)驱动器。例如,AD8240适合汽车应用,驱动和监视LED组件。AD8240由于降低了与LED驱动相关的复杂性从而降低了系统成本,它包括过流保护功能并且采用MSOP封装。ADM8845电荷泵适合用于驱动高达6只并联的白色LED,同时能够保证背光照明液晶显示的亮度均匀。它通过单独监视每只LED的电流实现了优良的匹配性能。ADM8845可以在3种电荷泵工作模式之间根据输入电压自动切换,所以它还用来最大化功率效率。

LCD Power
Part# Results: 2 Product Description Topology Application Peak Efficiency (%) Switching Freq Vin max (V) Vin min (V) Package Out Voltage (V) Ripple Out (p-p) US Price 1000-4999
ADM8832 Charge Pump Regulator for Color TFT Panels Capacitive LCD Bias 90% 100KHz 3.6V 2.6V 20-Lead LFCSP -10.2, 5, 15.3 0.01, 0.05 $2.02
ADM8839 Charge Pump Regulator for Color TFT Panels Capacitive LCD Bias 82% 100KHz 4.2V 2.7V 20-Lead LFCSP -15, 5, 15 0.01, 0.05 $1.98
发光二极管驱动器(LED)
Part# Results: 10 LED # LED Configuration I2C Support Max Iout (mA) Brightness Control Peak Efficiency (%) Over Volt Protection (V) US Price 1000-4999
ADD5205 4 Parallel No 100mA PWM - 28V $1.15
ADM8843 4 Parallel Yes 30mA PWM 88% - $0.5
ADM8845 6 Parallel No 30mA PWM 88% - $0.71
ADP5501 6 Serial Yes 30mA I2C - 24V **
ADP5520 6 Serial Yes 30mA I2C - 24V $1.66
ADP8860 7 Parallel Yes 60mA I2C 89% - $1.36
ADP8861 7 Parallel Yes 60mA PWM 89% 5.8V $1.22
ADP8863 7 Parallel Yes 60mA I2C 89% 5V $1.22
ADP8866 9 Parallel Yes 25mA I2C 92% - $1.48
ADP8870 7 Parallel Yes 60mA I2C 89% 5.8V $1.48
LED Flash Drivers
Part# Results: 3 Product Description LED # LED Configuration Topology I2C Support Max Iout (mA) Brightness Control US Price 1000-4999
ADP1650 1.5 A LED Flash Driver with I2C-Compatible Interface 1 Serial Inductive Yes 1.5A I2C $0.95
ADP1653 Serial 2 WLED Flash Driver 2 Serial Inductive Yes 500mA I2C $1.45
ADP1655 Serial 2 WLED Flash Driver 2 Serial Inductive Yes 400mA I2C $0.95