Datasheet Analog Devices LT3519-2 — Datenblatt

LT3519/LT3519-1/LT3519-2
LED Driver with Integrated
Schottky Diode
FEATURES DESCRIPTION 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: 1.5V, FB = 1.5V (Active, Not Switching) Current Sense Voltage (VISP-VISN) ISP = 24V
ISP = 0V l Zero Current Sense Voltage (VISP-VISN) ISP = 24V, CTRL = 100mV l Current Sense Voltage Line Regulation 2.5V < ISP < 45V TYP 3 MAX UNITS 30 V 0.1
2.0
2.5 1 …