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LM4961LQBD Folha de dados(PDF) 6 Page - Texas Instruments

Nome de Peças LM4961LQBD
Descrição Electrónicos  Ceramic Speaker Driver
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

LM4961LQBD Folha de dados(HTML) 6 Page - Texas Instruments

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DUTY CYCLE (%) = [1 - EFF*(VIN / VOUT)]
0
500
1000
1500
2000
2500
3000
VIN = 5V
VIN = 3.3V
VIN = 2.7V
VIN = 3V
1.4
1.42
1.44
1.46
1.48
1.5
1.52
1.54
1.56
1.58
TEMPERATURE (
oC)
VIN = 5V
VIN = 3.3V
-50
-25
0
25
50
75
100 125 150
2
2.5
3
3.5
4
4.5
5
5.5
SUPPLY VOLTAGE (V)
0
2
4
6
8
10
12
20
100
1k
20k
FREQUENCY (Hz)
-28
-24
-20
-16
-12
-8
-4
0
4
8
12
16
20
2k
5k 10k
500
200
50
0
1
2
3
4
5
6
OUTPUT VOLTAGE (V)
0
50
100
150
200
250
0
1
2
3
4
5
6
OUTPUT VOLTAGE (V)
0
50
100
150
200
250
300
LM4961, LM4961LQBD
SNAS242K – AUGUST 2004 – REVISED MAY 2013
www.ti.com
Typical Performance Characteristics (continued)
Power Dissipation vs Output Power
Power Dissipation vs Output Power
VDD = 4.2V, RL = 2μF + 30Ω, f = 1kHz
VDD = 3.2V, RL = 2μF + 30Ω, f = 1kHz
Figure 9.
Figure 10.
Frequency Response vs Input Capacitor Size
Supply Current vs Supply Voltage
RL = 8Ω
RL = 2μF + 30Ω, VIN = 0V, RSOURCE = 50Ω
from top to bottom: Ci = 1.0μF, Ci = 0.39μF, Ci = 0.039μF
Figure 11.
Figure 12.
Switch Current Limit vs Duty Cycle
Oscillator Frequency vs Temperature
Figure 13.
Figure 14.
6
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