MAX8821 Просмотр технического описания (PDF) - Maxim Integrated
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производитель
MAX8821 Datasheet PDF : 29 Pages
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White LED Charge Pump with Mono Class D
Audio Amp and Dual LDO
Typical Operating Characteristics (continued)
(VIN1 = VIN2 = VIN3 = VDD = 3.6V, VAGND = VPGND1 = VPGND2 = 0V, circuit of Figure 2, TA = +25°C, unless otherwise noted.)
WIDEBAND OUTPUT SPECTRUM
FIXED-FREQUENCY MODE
0
RL = 8Ω
-20
INPUTS AC GROUNDED
-40
-60
-80
-100
-120
-140
0.001 0.01 0.1
1
10 100
FREQUENCY (MHz)
OUTPUT POWER
vs. SUPPLY VOLTAGE
2.5
2.0
THD+N = 10%
1.5
1.0
THD+N = 1%
0.5
RL = 8Ω
0
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOLTAGE (V)
OUTPUT POWER
vs. SUPPLY VOLTAGE
3.5
3.0
THD+N = 10%
2.5
2.0
1.5
THD+N = 1%
1.0
0.5
RL = 4Ω
0
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOLTAGE (V)
EFFICIENCY
vs. SUPPLY VOLTAGE
100
RL = 8Ω
95
90
85
80
RL = 4Ω
75
70
65
60
55
50
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOLTAGE (V)
EFFICIENCY vs. OUTPUT POWER
100
90 RL = 8Ω
80
70
RL = 4Ω
60
50
40
30
20
10
0
0
VIN = 3.6V
0.5
1.0
1.5
2.0
OUTPUT POWER (W)
100
90
80
70
60
50
40
30
20
10
0
0
EFFICIENCY
vs. OUTPUT POWER
RL = 8Ω
RL = 4Ω
VIN = 5V
1
2
3
4
OUTPUT POWER (W)
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