MAX16824_09 Datasheet, PDF (4/13 Pages) Maxim Integrated Products – High-Voltage, Three-Channel Linear High-Brightness LED Drivers

High-Voltage, Three-Channel Linear
High-Brightness LED Drivers
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
OE Rising to OUT_ Rising Delay
t_CRF
t_OEH
50% of CLK rising to 50% of OUT_ falling,
Figure 4
50% of OE rising to 50% of OUT_ rising,
Figure 3
475
ns
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.
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.)
DROPOUT VOLTAGE vs. TEMPERATURE
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
I_LOAD = 100mA
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
CS_ VOLTAGE vs. OUTPUT CURRENT
0.207
0.202
0.197
0.192
0.187
0.182
0 15 30 45 60 75 90 105 120 135 150
OUTPUT CURRENT (mA)
OUTPUT CURRENT vs. INPUT VOLTAGE
190
170
I_LOAD = 150mA
150
130
I_LOAD = 100mA
110
90
70
50
30
10
-10
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28
V_IN (V)
4 _______________________________________________________________________________________