MAX16805 Datasheet, PDF (6/19 Pages) Maxim Integrated Products – EEPROM-Programmable, High-Voltage, 350mA LED Drivers with LED Current Foldback

EEPROM-Programmable, High-Voltage, 350mA
LED Drivers with LED Current Foldback
Typical Operating Characteristics
(V_IN = 12V, V_EN = V_IN, C_V5 = 0.1µF, I_V5 = 0, CS- = GND, R_SENSE = 0.56Ω, connect OUT to CS+, V_DIM = 4V, SW = VFD = open,
V_TFP/SC = 5V, V_TFN/SD = GND, DGND = GND. T_A = +25°C, unless otherwise noted.)
OUTPUT CURRENT
vs. TEMPERATURE
450
400
ILOAD = 350mA
350
300
250
ILOAD = 200mA
200
150
ILOAD = 100mA
100
50
ILOAD = 35mA
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
DROPOUT VOLTAGE
vs. TEMPERATURE
1.0
0.9
VIN = 12V
ILOAD = 350mA
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
(V_CS+ - V_CS-) vs. OUTPUT CURRENT
0.205
0.204
V_IN = 12V
0.203
0.202
0.201
0.200
0.199
0.198
0.197
0.196
0.195
20 50 80 110 140 170 200 230 260 290 320 350
OUTPUT CURRENT (mA)
+5V REGULATOR OUTPUT
vs. TEMPERATURE
5.20
NO LOAD
5.15
ILOAD = 1mA
OUTPUT CURRENT vs. INPUT VOLTAGE
400
350
I_OUT = 350mA
300
250
200
150
I_OUT = 100mA
100
50
0
0 2 4 6 8 10 12 14 16
INPUT VOLTAGE (V)
+5V REGULATOR OUTPUT
vs. INPUT VOLTAGE
5.20
NO LOAD
5.15
5.10
ILOAD = 2mA
5.05
5.10
ILOAD = 2mA
5.05
ILOAD = 1mA
5.00
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
5.00
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
SHUTDOWN CURRENT
vs. TEMPERATURE
35 _{VIN = 40V}
30
25
20
VIN = 20V
15
VIN = 12V
10
VIN = 6.5V
5
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
0.2010
0.2005
(V_CS+ - V_CS-) vs. I_V5
V_IN = 12
0.2000
0.1995
0.1990
0.1985
0.1980
012345678
I_V5 (mA)
200Hz DIMMED OPERATION
MAX16805 toc09
I_LOAD = 350mA
V_IN = 12V
DIM PULSED AT
200Hz (1% DUTY
CYCLE)
V_DIM
2V/div
0V
I_LOAD
200mA/div
0A
20µs/div
6 _______________________________________________________________________________________