Maxim MAX9777 Manual page 10

Stereo 3W Audio Power Amplifiers with
Headphone Drive and Input Mux
(V = PV = 5V, GND = PGND = 0V, V
DD DD
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(HEADPHONE MODE)
12
10
T = +85°C
A
8
6
4
T = -40°C
A
2
0
4.50 4.75
SUPPLY VOLTAGE (V)
POWER DISSIPATION vs. OUTPUT POWER
(SPEAKER MODE)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0 0.25 0.50
OUTPUT POWER (W)
10 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Typical Operating Characteristics (continued)
SHDN = 5V, C
BIAS
T = +25°C
A
5.00 5.25 5.50
R = 8Ω
L
f = 1kHz
0.75 1.00 1.25 1.50
= 1µF, T = +25°C, unless otherwise noted.)
A
SUPPLY CURRENT vs. SUPPLY VOLTAGE
12
10
8
6
4
2
0
4.50
V
DD
2V/div
OUT_+ AND OUT_-
1V/div
OUT_+ - OUT_-
1V/div
(HEADPHONE MODE)
T = +85°C
A
T = +25°C
A
T = -40°C
A
4.75 5.00 5.25
SUPPLY VOLTAGE (V)
EXITING POWER-DOWN
(SPEAKER MODE)
MAX9777/78 toc43
100ms/div
5.50