Rainbow Electronics MAX16825 - Manual (Page 4)

MAX16824/MAX16825
High-Voltage, Three-Channel Linear
High-Brightness LED Drivers
4 _______________________________________________________________________________________
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
CLK Rising to OUT_ Rising Delay t CRR
50% of CLK rising to 50% of OUT_ rising,
Figure 4
150 ns
CLK Rising to OUT_ Falling Delay t
CRF
50% of CLK rising to 50% of OUT_ falling,
Figure 4
475 ns
OE Rising to OUT_ Rising Delay t OEH
50% of OE rising to 50% of OUT_ rising,
Figure 3
150 ns
OE Falling to OUT_ Falling Delay t OEL
50% of OE falling to 50% of OUT_ falling,
Figure 3
475 ns
Note 1: All devices are 100% production tested at T
J
= +25°C and T
J
= +125°C. Limits to -40°C are guaranteed by design.
Note 2: This specification does not include sense resistor tolerance and ground error.
Note 3: Dropout is measured as follows: R
SC_
= 1.21Ω from CS_ to GND. Force 100mA into OUT_ and measure the dropout voltage
from OUT_ to CS_. DVDO = (ΔOUT_ - V
CS_
).
Note 4: OUT’s current regulation varies with load across REG (see the Typical Operating Characteristics).
Note 5: Overtemperature protection does not function if the output of the 5V reference (REG) is shorted to ground.
Note 6: Guaranteed by design, not production tested.
0
0.2
0.1
0.5
0.4
0.3
0.6
0.7
0.9
0.8
1.0
-40 -10 5 -25 20 35 50 65 80 95 110 125
DROPOUT VOLTAGE vs. TEMPERATURE
MAX16824toc01
TEMPERATURE ( °C)
DROPOUT VOLTAGE (V)
I LOAD = 100mA
0.182
0.192
0.187
0.197
0.202
0.207
0 60 45 15 30 75 90 105 120 135 150
CS_ VOLTAGE vs. OUTPUT CURRENT
MAX16824 toc02
OUTPUT CURRENT (mA)
V
CS_
(V)
OUTPUT CURRENT vs. INPUT VOLTAGE
MAX16824 toc03
V IN (V)
OUTPUT CURRENT (mA)
26 24 20 22 6 8 10 12 14 16 18 2 4
10
30
50
70
90
110
130
150
170
190
-10
0 28
I LOAD = 150mA
I
LOAD
= 100mA
Typical Operating Characteristics
(V IN = 12V, C REG = 1µF to GND, I REG = 0, R CS_ = 2Ω from CS_ to GND, T A = +25°C, unless otherwise noted. Typical values are at
T A = +25°C.)