Datasheet

Stereo, High-Power, Class D Amplifiers
MAX98400A/MAX98400B
11
Typical Operating Characteristics (continued)
(MAX98400A, V
PVDD
= 18V, V
SHDN
= 5V, LIM_TH = V
S
, TEMPLOCK = unconnected; G1 = GND, G2 = open (gain = 20.1dB), C
IN
=
C
REL
= C1 = C2 = 1FF, typical values are at T
A
= +25NC, unless otherwise noted.)
OUTPUT POWER vs. LOAD (MONO)
MAX98400 toc37
LOAD (I)
P
OUT
(W)
908010 20 30 50 6040 70
10
20
30
40
50
60
70
80
0
0 100
V
PVDD
= 24V
10% THD+N
1% THD+N
SUPPLY CURRENT
vs. PVDD SUPPLY VOLTAGE (MONO)
MAX98400 toc38
PVDD SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
24201612
2
4
6
8
10
12
14
0
8 28
V
S
= 5V
I
PVDD
I
VS
SUPPLY CURRENT
vs. V
S
SUPPLY VOLTAGE (MONO)
MAX98400 toc39
V
S
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
5.255.00
2
4
6
8
10
12
14
0
4.75 5.50
V
PVDD
= 18V
I
PVDD
I
VS
PVDD SUPPLY VOLTAGE (V)
MAXIMUM P
OUT
(W)
24201612
10
20
30
40
50
60
0
8 28
MAXIMUM OUTPUT POWER
vs. PVDD (NO THERMAL SHUTDOWN, MONO)
MAX98400 toc40
4I LOAD, THERMAL FOLD DISABLED
LIMITER TRANSFER CHARACTERISTIC
MAX98400 toc41
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
2.52.01.51.00.5
2
4
6
8
10
12
14
16
18
20
22
24
0
0 3.0
R
L
= 8I + 68µH
LIM_TH = GND
V
PVDD
= 8V
V
PVDD
= 18V
V
PVDD
= 24V
MAX98400 toc42
OUTPUT
4V/div
200ms/div
t
RELEASE
LIMITER RELEASE TIME
INPUT
2V/div
LIM_TH = GND