ISSI IS32LT3961 | Demoboard IS32LT3961-ZLA3-EB

Description

The IS32LT3961 is a DC-to-DC switching converter that integrates an N-channel MOSFET to operate in a buck configuration. The device can operate from a wide input voltage between 5V and 60V and provides a constant current of up to 2A for driving a single LED or multiple series connected LEDs.The external high-side resistor, RIS, is used to set a constant LED output current, while allowing the output voltage to be automatically adjusted for a variety of LED configurations.

Features

• Wide input voltage supply from 5V to 60V
• High-side current sensing with LED string cathode connected directly to GND
• True average output current control with ±5% output current accuracy over operating temperature range of -40°C to +150°C
• 2A maximum output over operating temperature range
• Cycle-by-cycle current limit
• Integrated high-side MOSFET switch
• PWM dimming capability
• Analog dimming for LED binning or thermal roll off protection
• Internal control loop compensation
• Under-voltage lockout (UVLO)
• Low power shutdown (1μA typical)
• Spread spectrum to optimize EMI
• Support an output current monitor signal
• Robust fault protection and reporting function:
• Single LED short detect
• LED string open/short
• LED over temperature thermal roll off
• Pin-to-GND short
• Component open/short faults
• Adjacent pin-to-pin short
• Thermal shutdown
• RoHS & Halogen-Free Compliance
• TSCA Compliance
• AEC-Q100 Qualified with Temperature Grade 1:
• 40°C to 125°C

Typical applications

• Matrix headlight, Daytime running lights, Turn/stop lights, Front and rear fog lights, Map light, Motorcycle headlight

More information

• Datasheet
• IC product information