MAX16804 Datasheet, PDF (3/11 Pages) Maxim Integrated Products – High-Voltage, 350mA LED Driver with Analog and PWM Dimming Control

High-Voltage, 350mA LED Driver with
Analog and PWM Dimming Control
ELECTRICAL CHARACTERISTICS (continued)
(V_IN = V_EN = 12V, C_V5 = 0.1µF, I_V5 = 0, CS- = GND, R_SENSE = 0.56Ω (see the Typical Operating Circuit), V_DIM = 4V, T_A = T_J = -40°C
to +125°C, unless otherwise noted. Typical values are at T_A = T_J = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
THERMAL PROTECTION
Thermal-Shutdown Temperature
Thermal-Shutdown Hysteresis
T_J(SHDN)
+155
°C
23
°C
+5V REGULATOR
Output Voltage Regulation
V5 Short-Circuit Current
V5
0 ≤ I_V5 ≤ 2mA
V5 = 0V (Note 6)
4.8
5.1
5.4
V
12
mA
Note 1: All devices are 100% production tested at T_A = +25°C. Limits over the operating temperature range are guaranteed by design.
Note 2: Resistors were added from OUT to CS+ to aid with the power dissipation during testing.
Note 3: Dropout is measured as follows:
Connect a resistor from OUT to CS+. Connect R_SENSE = 0.56Ω from CS+ to CS-. Set V_IN = V_OUT +3V (record V_OUT as
V_OUT1). Reduce V_IN until V_OUT = 0.97 x V_OUT1 (record as V_IN2 and V_OUT2). ΔV_DO = V_IN2 - V_OUT2.
Note 4: I_V5 = 0mA.
Note 5: t_ON time includes the delay and the rise time needed for I_OUT to reach 90% of its final value. t_OFF time is the time needed
for I_OUT to drop below 10%. See the Typical Operating Characteristics. t_ON and t_OFF are tested with 13Ω from OUT to CS+.
Note 6: Thermal shutdown does not function if the output of the 5V reference is shorted to ground. Shorting V5 to GND disables the
output.
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, 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)
(V_CS+ - V_CS-) vs. OUTPUT CURRENT
0.203
0.202
V_IN = 12V
0.201
0.200
0.199
0.198
0.197
0.196
0.195
0.194
0.193
20 50 80 110 140 170 200 230 260 290 320 350
OUTPUT CURRENT (mA)
OUTPUT CURRENT
vs. INPUT VOLTAGE
400
350
I_OUT = 350mA
300
250
200
150
100
I_OUT = 100mA
50
0
0 2 4 6 8 10 12 14 16
INPUT VOLTAGE (V)
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