MAX16809 Datasheet, PDF (7/23 Pages) Maxim Integrated Products – Integrated 16-Channel LED Drivers with Switch-Mode Boost and SEPIC Controller

Integrated 16-Channel LED Drivers with
Switch-Mode Boost and SEPIC Controller
Typical Operating Characteristics
(V_CC = +15V, V+ = 3V to 5.5V, R_T = 10kΩ, C_T = 3.3nF, V_REF = COMP = open, C_REF = 0.1µF, V_FB = 2V, CS = AGND = PGND = 0V.
Typical values are at T_A = +25°C, unless otherwise noted.)
BOOTSTRAP UVLO vs. TEMPERATURE
10
9
V_CC RISING
8
7
V_CC FALLING
6
5
4
3
2
HYSTERESIS
1
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
STARTUP CURRENT
vs. TEMPERATURE
41
V_CC = 7.5V
39
37
35
33
31
29
27
25
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
OPERATING SUPPLY CURRENT
vs. TEMPERATURE AFTER STARTUP
(f_OSC = f_SW = 300kHz)
5.1
C_T = 560pF
4.9
4.7
4.5
4.3
4.1
3.9
3.7
3.5
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
REFERENCE VOLTAGE
vs. TEMPERATURE
5.08
5.06
5.04
5.02
5.00
I_REF = 1mA
4.98
4.96
I_REF = 20mA
4.94
4.92
4.90
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
REFERENCE VOLTAGE
vs. REFERENCE LOAD CURRENT
5.05
5.00
4.95
4.90
4.85
4.80
4.75
4.70
4.65
0
10 20 30 40 50 60 70
I_REF (mA)
REFERENCE VOLTAGE
vs. SUPPLY VOLTAGE
5.000
4.998
I_REF = 1mA
4.996
4.994
4.992
4.990
4.988
4.986
4.984
4.982
4.980
10 12 14 16 18 20 22 24 26
V_CC (V)
OSCILLATOR FREQUENCY (f_OSC)
vs. TEMPERATURE
550
R_T = 3.65kΩ
540 _{CT = 560pF}
530
520
510
500
490
480
470
460
450
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
OSCILLATOR R_T/C_T DISCHARGE CURRENT
vs. TEMPERATURE
8.04
V_RT/CT = 2V
8.02
8.00
7.98
7.96
7.94
7.92
7.90
7.88
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
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