MAX4990E Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX4990E Datasheet PDF : 15 Pages
| |||
High-Voltage, ±15kV ESD-Protected
Electroluminescent Lamp Driver
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.4V to +5.5V, CLAMP = 10nF, CCS = 3.3nF, LX = 220µH (ISAT = 170mA, RS = 5.5Ω), TA = TMIN to TMAX, unless otherwise
noted. Typical values are at VDD = +3.0V and TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
THERMAL SHUTDOWN
Thermal Shutdown
158
°C
Thermal Shutdown Hysteresis
8
°C
Note 1: Specifications at TA = -40°C are guaranteed by design and not production.
Typical Operating Characteristics
(VDD = +3.6V, CLAMP = 10nF, CCS = 3.3nF, LX = 220µH (ISAT = 170mA, RS = 5.5Ω), RSLEW = 390kΩ, DIM = VDD, CSW = 100pF,
CEL = 1.2nF, TA = +25°C, unless otherwise noted.)
TOTAL INPUT CURRENT
vs. SUPPLY VOLTAGE
20
18
16
14
12
10
8
6
4
2
0
2.4 3.0 3.6 4.2 4.8 5.4
SUPPLY VOLTAGE (V)
TOTAL INPUT CURRENT
vs. TEMPERATURE
20
16
12
8
4
0
-40 -15 10
35
60
85
TEMPERATURE (°C)
TOTAL INPUT CURRENT AND
PEAK-TO-PEAK OUTPUT VOLTAGE
vs. BOOST CONVERTER FREQUENCY
80
300 MAX4990E toc03
- - - - PEAK-TO-PEAK OUTPUT VOLTAGE
90% DUTY CYCLE
60
225
CCS = 2.2nF
40
150
CCS = 4.7nF
20
CCS = 4.7nF
75
CCS = 2.2nF
0
0
40
80
120
160
200
BOOST CONVERTER FREQUENCY (kHz)
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
1.0 DIM = EN = 0V
0.8
0.6
0.4
0.2
SHUTDOWN CURRENT
vs. TEMPERATURE
100
DIM = EN = 0V
10
1
0.1
PEAK-TO-PEAK OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
300
DIM = 1.3V
250
DIM = 1.0V
200
DIM = 0.8V
150
DIM = 0.6V
100
50
0
2.4 3.0 3.6 4.2 4.8 5.4
SUPPLY VOLTAGE (V)
0.01
-40 -15 10
35
60
85
TEMPERATURE (°C)
0
2.4 3.0 3.6 4.2 4.8 5.4
SUPPLY VOLTAGE (V)
4 _______________________________________________________________________________________
Share Link: 