Diodes Incorporated | ZXLD1320DCATC

The ZXLD1320DCATC is a Buck mode DC-DC converter. It includes an internal switch, designed for driving single or multiple LEDs in series up to a total of 1.5 A output current.

This device employs a variable 'on' and 'off' time control scheme with adjustable peak switch current limiting and operates in the step-down (Buck) operating mode, offering higher power efficiency and lower system cost than conventional PFM circuitry.

Features:

• Step-down LED driver
• 4 V to 18 V input voltage range
• Typical efficiency > 85%
• User-defined thermal control of LED output current using external thermistor
• High output current stability over input voltage and temperature
• 12 µA typical standby current
• LED current adjustable from 100 % down to 2 %
• Adjustable soft-start
• Capable of driving 4 LEDs in series

Applications:

• Low voltage halogen lamp replacement with LEDs
• High power LED flashlights
• LED back-up lighting
• General LED lighting
• Automotive lighting