Description
●The ZXLD1321 is an inductive DC-DC converter, with an internal switch, designed for driving single or multiple LEDs in series up to a total of 1A output current.
●Applications cover commercial environments with input voltages ranging from 1.2V to 12V.
●The device employs a variable "on" and "off" time control scheme with adjustable peak switch current limiting and supports step-up (Boost) mode and self-powering Bootstrap operating modes, offering higher power efficiency and lower system cost than conventional PFM circuitry.
●Features
●• 1.2V to 12V Input voltage range
●• Up to 1A output current
●• Typical efficiency# >85%
●• Bootstrap operation enables input voltage down to 1V
●• User-defined thermal control of LED output current using external thermistor
●• High output current stability over input voltage and temperature
●• 12µA typical standby current
●• LED current adjustable from 100% down to 2%
●• Adjustable soft-start
●• Drives up to 5 white LEDs in series
●Applications
●• High power LED flashlights
●• LED back-up lighting
●• General LED lighting
●• Emergency lighting
