Datasheet LT3596 (Analog Devices) - 7

LT3596 Typical perForMance characTerisTics
TA = 25°C, unless otherwise noted PWM Dimming Waveforms 10,000:1 PWM Dimming at 100Hz 1,000:1 PWM Dimming at 100Hz (Overlapping PWM Signals)
PWM1 5V/DIV PWM PWM 2V/DIV 2V/DIV ILED1 100mA/DIV ILED ILED PWM2 50mA/DIV 50mA/DIV 5V/DIV ILED2 100mA/DIV 200ns/DIV 3596 G19 2µs/DIV 3596 G20 2ms/DIV 3596 G21
PWM Dimming Waveforms (Nonoverlapping PWM Signals) LED Open-Fault Waveforms LED Short to VOUT Waveforms
PWM1 5V/DIV V V LED OUT 20V/DIV I 1V/DIV LED1 V 100mA/DIV LED I 20V/DIV LED1 100mA/DIV PWM2 VOUT ILED 5V/DIV 20V/DIV 100mA/DIV ILED2 VSW VFAULT 100mA/DIV 50V/DIV 5V/DIV 2ms/DIV 3596 G22 20µs/DIV 3596 G23 10ms/DIV 3596 G24
FAULT Output Voltage VTSET for LED Current Derating TSET LED Current Derating
800 0.8 100 VTSET = 0.68V 0.7 80 600 0.6 60 (V) 400 (mA) VOLTAGE (mV) V TSET 0.5 I LED 40 FAULT 200 T = 125°C 0.4 20 T = 25°C T = –40°C 0 0.3 0 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 –50 –25 0 25 50 75 100 125 25 45 65 85 105 125 IFAULT (mA) TEMPERATURE (°C) TEMPERATURE (°C) 3596 G25 3596 G26 3596 G27 3596fa Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts