MAX14521E_15 Datasheet, PDF (6/21 Pages) Maxim Integrated Products – Quad, High-Voltage EL Lamp Driver with I2C Interface

MAX14521E
Quad, High-Voltage EL Lamp Driver
with I²C Interface
Typical Operating Characteristics (continued)
(V_DD = 3.7V, total C_LAMP = 10nF, C_CS = 3.3nF, L_X = 2.3μH/115μH, 1:7 ratio, (I_SAT = 0.7A, R_S = 1Ω), T_A = +25°C, sine-wave output,
f_SW = 800kHz, f_EL = 200Hz, unless otherwise noted.)
PEAK-TO-PEAK OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
250
240 ^{VFI = 200VP-P}
230
220 C_LOAD = 10nF
210
200
190
C_LOAD = 20nF
180
170
160
150
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOLTAGE (V)
AVERAGE OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
0
-100
-200
-300
-400
-500
-600
-700
-800
-900
-1000
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOLTAGE (V)
EL SWITCHING FREQUENCY
vs. SUPPLY VOLTAGE
210
205
200
195
190
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOLTAGE (V)
PEAK-TO-PEAK OUTPUT VOLTAGE
vs. TEMPERATURE
210
V_FI = 200V_P-P
205
200
195
190
-40 -15
10
35
60
85
TEMPERATURE (°C)
AVERAGE OUTPUT VOLTAGE
vs. TEMPERATURE
0
-100
-200
-300
-400
-500
-600
-700
-800
-900
-1000
-40 -15
10
35
60
85
TEMPERATURE (°C)
EL SWITCHING FREQUENCY
vs. TEMPERATURE
210
V_FI = 200V_P-P
205
200
195
190
-40 -15
10
35
60
85
TEMPERATURE (°C)
PEAK-TO-PEAK OUTPUT VOLTAGE
vs. CODE
350
300
250
200
150
100
50
0
0
8
16
24
32
EL_ _[4:0] CODE (DECIMAL VALUE)
EL SWITCHING FREQUENCY
vs. FEL[7:0]
1000
900
800
700
600
500
400
300
200
100
0
0
64
128
192
256
FEL[7:0] CODE (DECIMAL VALUE)
BOOST CONVERTER FREQUENCY
vs. FSW[4:0]
1800
1600
1400
1200
1000
800
600
400
200
0
0 4 8 12 16 20 24 28 32
FSW[4:0] CODE (DECIMAL VALUE)
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