| Vdd(V) | 8-450DC, 100-200AC |
|---|---|
| IOUT | 500mA±3% |
| Solder | Lead-free (RoHS Compliant) |
| Status | Prod |
| Outpack | Tape on Reel |
| Pkg Pin(mm) | SOP-8 |
| Document | T8_EB |
| Efficiency(%) | 90 |
| Temp.Range | Industrial Grade (-40ºC to 85ºC) |
| Driver Type | AC/DC, Step-down |
| Type | 3910 |
| Product Type | LT = Lighting LED Driver |
| Product Family | 31 = Commercial/Industrial Analog |
| Power Transistor | External |
| Package Type | GR = SOP |
| Solder Type | L = Lead-free (RoHS Compliant) |
| Part Number | 3910 = 3910 |
| Temperature Grade | S2 = Industrial temp. (-40°C to 85°C) |
| Package option | 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.