MAX16801A Datasheet, PDF (4/15 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
(V_UVLO/EN = +1.4V, V_FB = +1V, COMP = unconnected, V_CS = 0V, T_A = +25°C, unless otherwise noted.)
BOOTSTRAP UVLO WAKE-UP LEVEL
vs. TEMPERATURE
21.60
MAX16801 V_IN RISING
21.55
21.50
BOOTSTRAP UVLO SHUTDOWN LEVEL
vs. TEMPERATURE
10.1
MAX16801 V_IN FALLING
10.0
UVLO/EN WAKE-UP THRESHOLD
vs. TEMPERATURE
1.280
UVLO/EN RISING
1.275
1.270
21.45
9.9
1.265
21.40
21.35
1.260
9.8
1.255
21.30
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
9.7
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
1.250
-40 -20 0
20 40 60 80
TEMPERATURE (°C)
UVLO/EN SHUTDOWN THRESHOLD
vs. TEMPERATURE
1.30
UVLO/EN FALLING
1.25
1.20
1.15
1.10
-40 -20 0
20 40 60 80
TEMPERATURE (°C)
V_IN SUPPLY CURRENT IN UNDERVOLTAGE
LOCKOUT vs. TEMPERATURE
52
51
V_IN = 19V
MAX16801 WHEN IN BOOTSTRAP UVLO
50 ^{MAX16802 WHEN UVLO/EN IS LOW}
49
48
47
46
45
44
43
42
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
V_IN SUPPLY CURRENT AFTER STARTUP
vs. TEMPERATURE
1.5
V_IN = 24V
1.4
1.3
1.2
1.1
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
V_CC REGULATOR SET POINT
vs. TEMPERATURE
9.8
9.7
NDRV OUTPUT IS NOT
V_IN = 19V
NO LOAD
SWITCHING, V_FB = 1.5V
9.6
9.5
9.4
NDRV OUTPUT IS
9.3
SWITCHING
9.2
-40 -20 0
20 40 60 80
TEMPERATURE (°C)
V_CC REGULATOR SET POINT
vs. TEMPERATURE
8.9
V_IN = 10.8V
8.8
8.7
10mA LOAD
8.6
8.5
8.4
20mA LOAD
8.3
8.2
8.1
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
CURRENT-SENSE THRESHOLD
vs. TEMPERATURE
310
305 ^+3σ
TOTAL NUMBER OF
DEVICES = 100
300
295
MEAN
290
285
280
-3σ
275
270
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
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