Rainbow Electronics MAX16825 - Manual (Page 3)

MAX16824/MAX16825
High-Voltage, Three-Channel Linear
High-Brightness LED Drivers
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ELECTRICAL CHARACTERISTICS (continued)
(V IN = 12V, C REG = 1µF to GND, I REG = 0, R CS_ = 2Ω from CS_ to GND, T J = T A = -40°C to +125°C, unless otherwise noted. Typical
values are at T J = T A = +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
OUTPUTS (OUT1, OUT2, OUT3)
Turn-On Time t R
PWM_ rising time, t R , is measured from 20%
to 80% of I OUT
1 µs
Turn-Off Time t F
PWM_ falling time, t F , is measured from
80% to 20% of I OUT
1 µs
SPI INTERFACE (CLK, LE, OE, DIN, DOUT) (Figures 3 and 4)
DIN, CLK, LE, OE Input Bias
Current
DIN = CLK = LE = OE = 0 or 5V 1 µA
DIN, CLK, LE, OE Input-Voltage
High
V IH 2.2 V
DIN, CLK, LE, OE Input-Voltage
Low
V IL 0.5 V
CLK Clock Period t CP
50% of CLK rising to 50% of next CLK
rising, Figure 3
50 ns
CLK Pulse-Width High t CH
50% of CLK rising to 50% of CLK falling,
Figure 3
24 ns
CLK Pulse-Width Low t CL
50% of CLK falling to 50% of CLK rising,
Figure 3
24 ns
DIN Setup Time t DS
50% of DIN rising to 50% of CLK rising,
Figure 3
5 ns
DIN Hold Time t DH
50% of CLK rising to 50% of DIN falling,
Figure 3
10 ns
DOUT Propagation Delay t DO
50% of CLK rising to 50% of DOUT rising/
falling, Figure 3
5 ns
DOUT Rise/Fall Time t DR /t DF
C DOUT = 10pF, 10% to 90% of DOUT
rising/falling edge (Note 6)
15 ns
DOUT Voltage High V DOH I SOURCE = 4mA 4.5 V
DOUT Voltage Low V DOL I SINK = 4mA 0.5 V
LE Pulse-Width High t LW
50% of LE rising to 50% of LE falling,
Figure 3
20 ns
LE Setup Time t LS
50% of CLK rising to 50% of LE rising,
Figure 3
15 ns
LE Rising to OUT_ Rising Delay t LRR
50% of LE rising to 50% of OUT_ rising,
Figure 4
150 ns
LE Rising to OUT_ Falling Delay t LRF
50% of LE rising to 50% of OUT_ falling,
Figure 4
475 ns