SA08 Datasheet, PDF (3/5 Pages) Cirrus Logic – PULSE WIDTH MODULATION AMPLIFIERS

Product Innova tionFrom
SA08
POWER DERATING
125
100
75
50
25
EACH ACTIVE
0 ^{OUTPUT TRANSISTOR}
0 25 50 75 100 125
CASE TEMPERATURE, (°C)
REVERSE DIODE
20
16
12
Tc = 100°C
8
Tc = 25°C
4
0
0.5 1.0 1.5 2.0 2.5 3.0
DIODE FORWARD VOLTAGE DROP, (V)
CONTINUOUS AMPS
20
18
16
14
12
10
25
50
75
100 125
CASE TEMPERATURE, (°C)
Vcc QUIESCENT CURRENT
115
Vcc = 15V
110
F = 22.5 kHz
105
NORMAL
100
OPERATION
95
90
SHUTDOWN
85
OPERATION
80
–50 –25 0 25 50 75 100 125
CASE TEMPERATURE, (°C)
SA08U
CLOCK LOADING
100
99
98
97
96
F NOMINAL = 45kHz
95
10K
100K
1M
CLOCK LOAD RESISTANCE, (Ω)
TOTAL VOLTAGE DROP
6
CASE TEMPERATURE
5
100°C
25°C
4
3
2
0
4
8 12 16 20
OUTPUT CURRENT, I (A)
DUTY CYCLE VS ANALOG INPUT
100
B OUT
80
60
40
20
A OUT
0
3
4
5
6
7
ANALOG INPUT, (V)
Vs QUIESCENT VS VOLTAGE
150
125
100
75
50
0 100 200 300 400 500
Vs, (V)
CLOCK FREQUENCY OVER TEMP
102.0
101.5
101.0
100.5
100
99.5
99.0
98.5
98.0
–50 –25 0 25 50 75 100 125
CASE TEMPERATURE, (°C)
Vcc QUIESCENT CURRENT
100
96
92
88
84
5
10
15
20
25
SWITCHING FREQUENCY, F (kHz)
Vs QUIESCENT VS FREQUENCY
100
90
80
70
60
50
5
10
15
20
25
SWITCHING FREQUENCY, F (kHz)
3