Datasheet

9
Atmel MSL3086/MSL3088 Datasheet
8-String 60mA LED Drivers with Integrated Boost Controller and Phase Shifted Dimming
DRIVER RISE TIME
This scope image shows the voltage (VSTR0) and current (ISTR0)
waveforms for string zero, and their turn-on rise times and delay
from PWM rising. Also shown is the string power supply output
(VLED), which shows little disturbance. For this photo string 0 is
enabled with all other strings disabled.
DRIVER FALL TIME
This scope image shows the voltage (VSTR0) and current (ISTR0)
waveforms for string zero, and their turn-off fall times. Also shown
is the string power supply output (VLED), which shows very little
disturbance. For this photo string 0 is enabled with all other strings
disabled, and a 220pF capacitor in series with a 11Ω resistor in
series is placed from STR0 to GND at the device.
5.0 Typical Operating Characteristics (continued)
(Typical Operating Circuit, unless otherwise stated, TA = +25°C, unless otherwise noted)
MSL3086/MSL3087/MSL3088 Datasheet
Page 9 of 26
© Atmel Inc., 2011. All rights reserved.
BOOST REGULATOR GATE DRIVE RISE/FALL
WITH 3nF CAPACITIVE LOAD
CH2 = V
GATE