MAX16823_09 Datasheet, PDF (3/12 Pages) Maxim Integrated Products – High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection

High-Voltage, 3-Channel Linear High-Brightness
LED Driver with Open LED Detection
ELECTRICAL CHARACTERISTICS (continued)
(V_IN = 12V, C_REG = 0.1µF, I_REG = 0, C_LGC = 15nF, V_DIM1 = V_DIM2 = V_DIM3 = 3.4V, R_{CS_} = 2.85Ω from CS_ to GND, T_J = T_A = -40°C
to +125°C, unless otherwise noted. Typical values are at T_A = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
CURRENT SENSE
Regulated CS_ Voltage
Input Current (CS1, CS2, CS3)
V_{CS_}
5mA ≤ I_OUT_ ≤ 70mA
Current out of CS_
193
203
213
mV
+1.2
µA
OVERTEMPERATURE PROTECTION (Note 4)
Thermal Shutdown Temperature
155
°C
Thermal Shutdown Hysteresis
23
°C
3.4V REGULATOR (REG)
Output Voltage
REG Short-Circuit Current
V_REG
0 ≤ I_REG ≤ 4mA
V_REG = 0V
3.275 3.41 3.547
V
3.221 3.38 3.547
13
mA
Note 1: All devices 100% production tested at T_J = +25°C. Limits over the operating temperature range are guaranteed by design.
Note 2: Dropout is measured as follows: Connect a resistor from OUT_ to CS_. Connect R_{CS_} = 2.85Ω from CS_ to GND.
Set V_IN = V_OUT + 3V (record V_OUT as V_OUTA). Reduce V_IN until V_OUT = 0.97 x V_OUTA (record as V_INB and V_OUTB).
VDO = V_INB - V_OUTB.
Note 3: Output current rise and fall times are measured with a 62Ω series resistor from OUT_ to CS_.
Note 4: Overtemperature protection does not function if the output of the 3.4V reference (REG) is shorted to ground.
Typical Operating Characteristics
(V_IN = 12V, C_REG = 0.1µF, I_REG = 0, V_LGC = unconnected, connect R_{CS_} = 2.85Ω from CS_ to GND. Connect OUT_ to CS_ through
a resistor, T_J = -40°C to +125°C, unless otherwise noted. Typical values are at T_A = +25°C.)
OUTPUT CURRENT vs. TEMPERATURE
100
90
80
70
I_LOAD = 70mA
60
50
40
I_LOAD = 35mA
30
20
10
I_LOAD = 5mA
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C )
V_{CS_} vs. OUTPUT CURRENT
0.210
0.209
0.208
0.207
0.206
0.205
0.204
0.203
0.202
0.201
0.200
0
10 20 30 40 50 60 70
OUTPUT CURRENT (mA)
OUTPUT CURRENT vs. INPUT VOLTAGE
100
90
80
I_OUT = 70mA
70
60
50
40
30
20
10
I_OUT = 5mA
0
0 5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
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