MAX14521E 查看數據表（PDF） - Maxim Integrated
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MAX14521E Datasheet PDF : 20 Pages
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Quad, High-Voltage EL Lamp Driver
with I2C Interface
Typical Operating Characteristics (continued)
(VDD = 3.7V, total CLAMP = 10nF, CCS = 3.3nF, LX = 2.3µH/115µH, 1:7 ratio, (ISAT = 0.7A, RS = 1Ω), TA = +25°C, sine-wave output,
fSW = 800kHz, fEL = 200Hz, unless otherwise noted.)
RAMP TIME vs. CODE
2000
1500
1000
NORMALIZED BRIGHTNESS
vs. SUPPLY VOLTAGE
2
VFI = 200VP-P
1.5
1
BOOST CONVERTER MAGNITUDE vs.
FREQUENCY (SPREAD SPECTRUM DISABLED)
0
RBW = 100Hz
fSW = 1.6MHz
-20 VEL = 300VP-P
SS[1:0] = 00
-40
-60
500
0.5
-80
0
0
2
4
6
8
RT_ _[2:0] CODE (DECIMAL VALUE)
BOOST CONVERTER MAGNITUDE vs.
FREQUENCY (SPREAD SPECTRUM ENABLED)
0
RBW = 100Hz
fSW = 1.6MHz
-20 VEL = 300VP-P
SS[1:0] = 10
-40
-60
0
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOLTAGE (V)
SCOPE SHOT WITH SL[1:0] = 00
MAX14521E toc20
-100
0
10
100
FREQUENCY (MHz)
SCOPE SHOT WITH SL[1:0] = 01
MAX14521E toc21
Math Freq
201.7 Hz
Math Pk-Pk
205 V
Math Freq
201.3 Hz
Math Pk-Pk
208 V
-80
-100
0
10
100
FREQUENCY (MHz)
SCOPE SHOT WITH SL[1:0] = 10
MAX14521E toc22
SCOPE SHOT WITH SL[1:0] = 11
MAX14521E toc23
RAMPING TIME
MAX14521E toc24
Math Freq
201.8 Hz
Math Pk-Pk
208 V
Math Freq
202.0 Hz
Math Pk-Pk
208 V
Math Pk-Pk
298 V
VEL
50V/div
1s/div
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