ZXLD1370 High Accuracy LED Driver

Diodes' ZXLD1370 is a high accuracy LED driver controller that is used with an external MOSFET sized for the expected LED current. It can be configured for operation with a buck, boost, or buck-boost converter. The device can drive up to 16 LEDs in series and operate with an input voltage of 6.5 V to 60 V. Series connection of the LEDs provides identical LED currents, resulting in uniform brightness eliminating the need for ballast resistors.

The ZXLD1370 switches at frequencies up to 1 MHz, which allows the use of small size external components, hence reducing the solution footprint. The ZXLD1370 provides a simple, high reliability solution for driving multiple high brightness LEDs in buck, boost, or buck-boost topologies.

• High accuracy LED control: 1% reference tolerance, improved brightness control and matching between lamps
• LED thermal management via external thermistor: Improves reliability of LED lamps, enabling high lumen maintenance
• Separate 1000:1 PWM dimming capability: Improves dynamic range of dimming at lower light levels
• Switching frequency up to 1MHz: Allows small inductor reducing size of solution