MAX14514(2009) Ver la hoja de datos (PDF) - Maxim Integrated
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MAX14514 Datasheet PDF : 14 Pages
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Dual Electroluminescent Lamp Driver
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V to +5.5V, CLAMP_TOTAL = 10nF, CCS = 3.3nF, LX = 220µH (ISAT = 170mA, RS = 5.5Ω), TA = -40°C to +85°C, unless
otherwise noted. Typical values are at VDD = +3.0V, TA = +25°C.) (Note 2)
PARAMETER
CONTROL INPUT (EN)
Input Logic-High Voltage
Input Logic-Low Voltage
THERMAL SHUTDOWN
Thermal Shutdown
Thermal Shutdown Hysteresis
SYMBOL
VIH_EN
VIL_EN
CONDITIONS
MIN TYP MAX UNITS
1.4
V
0.3
V
158
°C
8
°C
Note 2: All devices are 100% production tested at TA = +25°C. All temperature limits are guaranteed by design.
(VDD = +3.6V, TA = +25°C, unless otherwise noted.)
TOTAL INPUT CURRENT
vs. SUPPLY VOLTAGE
25
25
20
20
15
15
10
10
5
5
Typical Operating Characteristics
TOTAL INPUT CURRENT
vs. TEMPERATURE
INPUT CURRENT AND PEAK-TO-PEAK OUTPUT
VOLTAGE vs. BOOST CONVERTER FREQUENCY
80
300 MAX14514 toc03
PEAK-TO-PEAK OUTPUT
90% DUTY CYCLE
60
225
40
150
20
75
0
2.7
3.4
4.1
4.8
SUPPLY VOLTAGE (V)
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
0.4
DIM1 = DIM2 = EN = 0V
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
2.7
3.4
4.1
4.8
SUPPLY VOLTAGE (V)
0
5.5
-40 -15
10
35
60
85
TEMPERATURE (°C)
SHUTDOWN CURRENT
vs. TEMPERATURE
100
DIM1 = DIM2 = EN = 0V
10
1
0.1
0.01
0.001
5.5
-40 -15
10
35
60
85
TEMPERATURE (°C)
0
0
40
80
120
160
200
BOOST CONVERTER FREQUENCY (kHz)
PEAK-TO-PEAK OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
250
DIM = 1V
200
150
DIM_ = 0.7V
100
DIM = 0.5V
DIM_ = 0.4V
50
0
2.7
3.4
4.1
4.8
5.5
SUPPLY VOLTAGE (V)
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