LDS8680
TYPICAL CHARACTERISTICS
V IN = 3.6V, I OUT = 800 mA (2 LEDs at 400mA), C IN = C1= 1 μ F, C OUT = 2 μ F, T AMB = 25°C unless otherwise specified
Power-Up in 1-x mode
V IN = 4.2 V, Ch1 – EN/SET, Ch2 – LED current (400 mA/div),
Ch3 – Output voltage
Operating Waveforms at 1kHz PWM mode
10% Duty Cycle
V IN = 4.2 V, Ch1 – EN/SET, Ch2 – LED current (400 mA/div)
LED Current Setting Error vs. Duty Cycle
Power-Up in 2-x Mode
V IN = 3.6 V, Ch1 –EN/SET, Ch2 – LED current (400 mA/div),
Ch3 – Output voltage
Operating Waveforms at 1kHz PWM mode
90% Duty Cycle
V IN = 4.2 V, Ch1 –EN/SET, Ch2 – LED current (400 mA/div)
Power-Down Delay (1-x Mode)
in PWM Mode
V IN = 4.2 V, Ch1 – PWM, Ch2 – LED current (400 mA/div)
? 2009 IXYS Corp.
Characteristics subject to change without notice
5
Doc. No. 8680_DS, Rev. N1.0
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