ISSI IS31LT3361 | Demoboard IS31LT3361-SDLS4-EB

Description

The IS31LT3361 is a continuous mode inductive stepdownconverter, designed for driving a single LED or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The chip operates from an input supply between 6V and 40V and provides an externally adjustable output current of up to 1.3A.The IS31LT3361 includes an integrated low-side output NMOS switch and a high-side output current sensing circuit, which uses an external resistor to set the nominal average output current.

Features

• Wide input voltage range: 6V~40V
• Integrated 40V NMOS switch
• Up to 1.3A output current
• High efficiency (up to 98%)
• Simple low parts count
• ±5% output current accuracy over -40°C to +125°C temperature
• Single pin on/off and brightness control using DC voltage or PWM
• Up to 2000: 1 dimming ratio at 100Hz PWM
• Up to 1MHz switching frequency
• Robust fault protections
• LED string open/short protection
• Integrated NMOS over current protection
• Diode open/short protection
• Thermal shutdown protection

Typical applications

• 9V~16V, 2A DC power supply
• LED load (2 LEDs in series/2A)

More information

• Datasheet
• IC product information