Analog Devices LT8374

Description

The LT8374/LT8374-1 is a high efficiency, monolithic, synchronous step-down DC/DC converter with fixed-frequency and peak current control. The LED current is programmed by a resistor from CTRL pin to ground or by applying a PWM signal to the CTRL pin. The current sense amplifier has a wide common mode range from 0V to VIN, making the LT8374 ideal for matrix applications. An output voltage limit can be set with a resistor from ISP pin to FB pin.The switching frequency is set at 330kHz/2MHz and can be synchronized to an external clock applied to the SYNC/SPRD pin. With the optional spread-spectrum frequency modulation enabled, the frequency varies from 100% to 125% to reduce EMI.

Features

• Low Component Count and Simple Solution
• Wide Input Voltage Range: 6.5V to 60V
• 0V to 59V LED String Voltage
• ±3% LED Current Regulation
• Spread-Spectrum Frequency Modulation
• Internal Compensation Capacitor
• 20:1 Analog, Duty Cycle or PWM LED Current Control
• 330kHz/2MHz Fixed Internal Frequency(LT8374/LT8374-1)
• External Frequency Synchronization
• 4mm × 4mm 16-Pin Side Solderable QFN Package
• AEC-Q100 Qualified for Automotive Applications

Typical applications

• Current Sources
• Automotive Lighting, Matrix LED Lighting, General Purpose LED Driver

More information

• Datasheet
• IC product information