電壓 - 電源 | 8-450DC, 100-200AC |
---|---|
電流 - 輸出/通道 | 500mA±3% |
焊接 | Lead-free (RoHS Compliant) |
狀態 | Prod |
外包裝 | Tape on Reel |
腳位/封裝 | SOP-8 |
文件 | T8_EB |
效率(%) | 90 |
温規 | Industrial Grade (-40ºC to 85ºC) |
驅動器類型 | AC/DC, Step-down |
類型 | 3910 |
產品類別 | LT = Lighting LED Driver |
產品系列 | 31 = Commercial/Industrial Analog |
功率晶體管 | External |
腳位/封裝 | GR = SOP |
焊料類型 | L = Lead-free (RoHS Compliant) |
IC代碼 | 3910 = 3910 |
Temperature Grade | S2 = Industrial temp. (-40°C to 85°C) |
包裝選項 | TR = Tape & Reel |
The IS31LT3910 is a peak current mode control LED driver IC. The IS31LT3910 operates in constant off- time mode. It allows efficient operation of High Brightness (HB) LEDs with voltage sources ranging from 8VDC to 450DC or 110VAC/220VAC. The IS31LT3910 includes a PWM dimming input that can accept an external control signal with a duty ratio of 0 - 100% and a frequency of up to a few kilohertz. It also includes a 0 - 240mV linear dimming input which can be used both for linear dimming and temperature compensation of the LED current. The IS31LT3910 is ideally suited for buck LED drivers. Since the IS31LT3910 operates in peak current mode control, the controller achieves good output current regulation without the need for any loop compensation. It achieves good PWM dimming response because the response time is limited only by the rate of rise and fall of the inductor current, enabling very fast rise and fall time.