The LT3519/LT3519-1/LT3519-2 are fixed frequency step-up DC/DC converters designed to drive LEDs. They feature an internal 45V, 750mA low side switch and Schottky diode. Combining a traditional voltage feedback and a unique rail-to-rail current sense feedback allows these converters to operate as a constant-voltage source or constant-current source. Internal compensation simplifies applications. These devices feature rail-to-rail LED current sense pins that provide the most flexibility in choosing a converter configuration to drive the LEDs. The LED current is externally programmable with a sense resistor. The external PWM provides up to 3000:1 PWM dimming and the CTRL input provides analog dimming. Applications * Automotive * Industrial * Constant Current Source * Current Limited Constant Voltage Source * Up to 3000:1 True Color PWM™ Dimming * Wide Input Voltage Range * Operation from 3V to 30V * Transient Protection to 40V * Rail-to-Rail LED Current Sense from 0V to 45V * 45V, 750mA Internal Switch * Internal Schottky Diode * Constant-Current and Constant-Voltage Regulation * Boost, SEPIC, Buck-Boost Mode or Buck Mode Topology * Open LED Protection and Open LED Status Pin * Programmable Undervoltage Lockout with Hysteresis * Fixed Frequency: 400kHz (LT3519), 1MHz (LT3519-1), 2.2MHz (LT3519-2) * Internal Compensation * CTRL Pin Provides Analog Dimming * Low Shutdown Current: <1μA * 16-Lead MSOP Package https://elecena.pl/product/14875493/led-driver-with-integrated-schottky-diode 2018-05-22 https://elecena.pl/product/14875493/led-driver-with-integrated-schottky-diode 2025-01-17