Datasheet LT3597 (Analog Devices) - 7

LT3597
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. 20,000:1 PWM Dimming (100Hz) 1,000:1 PWM Dimming (100Hz)
PWM PWM 2V/DIV 2V/DIV ILED ILED 50mA/DIV 50mA/DIV 3597 G19 100ns/DIV 3597 G20 2µs/DIV
Open LED Fault Shorted LEDs Fault
VOUT VOUT 5V/DIV 5V/DIV VLED VLED 2V/DIV 5V/DIV ILED ILED 100mA/DIV 100mA/DIV VFAULT VFAULT 5V/DIV 5V/DIV 3597 G21 20ms/DIV 3597 G22 10ms/DIV
TSET Voltage for Temperature FAULT Pin Voltage Low Derating TSET LED Current Derating
400 0.8 120 VTSET = 0.675V 350 125°C 100 0.7 300 80 250 25°C 0.6 200 60 VOLTAGE (mV) 40°C VOLTAGE (V) 0.5 T PIN 150 T SET LED CURRENT (mA) 40 FAUL 100 0.4 20 50 0 0.3 0 0 0.2 0.4 0.6 0.8 1 –50 –25 0 25 50 75 100 125 25 45 65 85 105 125 FAULT PIN CURRENT (mA) TEMPERATURE (°C) TEMPERATURE (°C) 3597 G23 3597 G24 3597 G25 3597fa 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts