MAX16809 Datasheet, PDF (8/23 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 (continued)
(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.)
CURRENT-SENSE TRIP THRESHOLD
vs. TEMPERATURE
0.40
0.38
0.36
0.34
0.32
0.30
0.28
0.26
0.24
0.22
0.20
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
TIMING RESISTANCE
vs. OSCILLATOR FREQUENCY
1000
C_T = 1nF
100
C_T = 560pF
C_T = 220pF
C_T = 100pF
10
C_T = 10nF
1 CT = 4.7nF
C_T = 3.3nF
C_T = 2.2nF
0.1
10k
100k
1M
10M
FREQUENCY (Hz)
OUT IMPEDANCE vs. TEMPERATURE
(R_{DS_ON} PMOS DRIVER)
5.0
4.8 ^ISOURCE ^{= 100mA}
4.6
4.4
4.2
4.0
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
OUT IMPEDANCE vs. TEMPERATURE
(R_{DS_ON} NMOS DRIVER)
10
I_SINK = 200mA
9
8
7
6
5
4
3
2
1
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
COMP VOLTAGE LEVEL TO TURN
OFF DEVICE vs. TEMPERATURE
2.3
V_CC = 15V
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
PROPAGATION DELAY FROM CURRENT-LIMIT
COMPARATOR TO OUT vs. TEMPERATURE
100
90
80
70
60
50
40
30
20
10
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
ERROR-AMPLIFIER OPEN-LOOP GAIN
AND PHASE vs. FREQUENCY
MAX16809 toc14
140
10
120
-15
100
-40
GAIN
80
-65
60
PHASE
-90
40
-115
20
-140
0
-165
-20
0.01 1
-190
10 100 1k 10k 100k 1M 10M 100M
FREQUENCY (Hz)
SUPPLY CURRENT
vs. OSCILLATOR FREQUENCY
7.0
6.5 ^{CT = 100pF}
6.0
5.5
5.0
T_A = +125°C
4.5
T_A = -40°C
4.0
3.5
3.0
2.5
2.0
20 120 220 320 420 520 620 720 820 920 1020
FREQUENCY (kHz)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(INTERFACE IDLE, ALL OUTPUTS OFF, R_SET = 720Ω)
2.00
T_A = +125°C
T_A = +85°C
1.95
T_A = +25°C
1.90
T_A = -40°C
1.85
1.80
3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
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