MAX16801A Datasheet, PDF (5/15 Pages) Maxim Integrated Products – Off-Line and DC-DC PWM Controllers for High-Brightness LED Drivers

Off-Line and DC-DC PWM Controllers for
High-Brightness LED Drivers
Typical Operating Characteristics (continued)
(V_UVLO/EN = +1.4V, V_FB = +1V, COMP = unconnected, V_CS = 0V, T_A = +25°C, unless otherwise noted.)
CURRENT-SENSE THRESHOLD
30
TOTAL NUMBER OF
DEVICES = 200
25
20
15
10
5
SWITCHING FREQUENCY
vs. TEMPERATURE
280
275 ^+3σ
TOTAL NUMBER OF
DEVICES = 100
270
265
MEAN
260
255
250
-3σ
245
SWITCHING FREQUENCY
30
TOTAL NUMBER OF
DEVICES = 200
25
20
15
10
5
0
260 270 280 290 300 310 320
CURRENT-SENSE THRESHOLD (mV)
240
-40 -20 0
20 40 60 80
TEMPERATURE (°C)
0
230 240 250 260 270 280 290
SWITCHING FREQUENCY (kHz)
PROPAGATION DELAY FROM
CURRENT-SENSE COMPARATOR INPUT
TO NDRV vs. TEMPERATURE
75
70
65
60
55
50
-40 -20 0
20 40 60 80
TEMPERATURE (°C)
INPUT CURRENT
vs. INPUT CLAMP VOLTAGE
10
9
8
7
6
5
4
3
2
1
0
10.0 12.5 15.0 17.5 20.0 22.5 25.0 27.5 30.0
INPUT VOLTAGE (V)
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
-40
UVLO/EN PROPAGATION DELAY
vs. TEMPERATURE
UVLO/EN RISING
UVLO/EN FALLING
-20 0 20 40 60 80
TEMPERATURE (°C)
27.0
26.8
26.6
26.4
26.2
26.0
25.8
25.6
25.4
25.2
25.0
-40
INPUT CLAMP VOLTAGE
vs. TEMPERATURE
I_IN = 2mA
-20 0 20 40 60 80
TEMPERATURE (°C)
REFERENCE VOLTAGE
vs. TEMPERATURE
1.230
V_IN = 12V
1.229
1.228
1.227
1.226
1.225
-40 -20 0
20 40 60 80
TEMPERATURE (°C)
NDRV OUTPUT IMPEDANCE
vs. TEMPERATURE
2.2
2.1
V_IN = 24V
SINKING 100mA
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
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