| Vdd(V) | 6-40 |
|---|---|
| IOUT | ±3% |
| Status | S=Q3/16 |
| Pkg Pin(mm) | QFN-16 |
| Efficiency(%) | 90 |
| Driver Type | Buck, Boost or Buck-Boost |
| Power Transistor | External |
| Product Family | 31 = Commercial/Industrial Analog |
| Part Number | 3515 = 3515 |
| Product Type | LT = Lighting LED Driver |
| Package option | blank = Tray or Tube |
The IS31LT3515 is a current mode PWM controller designed to drive an external MOSFET for high current LED applications. With a current sense amplifier threshold of 250mV, the LED current is programmable with one external current sense resistor. The IS31LT3515 is ideal for boost or buck-boost operation. With 250kHz operating frequency (typical, and this frequency can be set up by external resistor), the external inductor and capacitors can be small while maintaining high efficiency. Dimming can be either analog or PWM digital. Input DC voltage from LD pin for analog dimming. Input PWM signal from PWM pin can get either analog dimming or PWM dimming. The IS31LT3515 is available in SOP-16 package and TSSOP-16 package.