NXP Semiconductors SA58670A - Manual (Page 14)

SA58670A_2 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 02 — 23 October 2008 14 of 24
NXP Semiconductors
SA58670A
2.1 W/channel stereo class-D audio amplifier
(1) left channel; R
L
= 8
Ω
.
(2) right channel; R
L
= 4
Ω
.
(3) right channel; R
L
= 8
Ω
.
Fig 11. Supply voltage as a function of shutdown
voltage
Fig 12. Supply current as a function of supply voltage
V SDR; V SDL (V)
0 3 2 1
001aah507
2
4
6
V DD
(V)
0
2.5 V
3.6 V
5 V
V DD (V)
2.5 5.5 4.5 3.5
001aah508
3.5
4.5
5.5
I DD
(mA)
2.5
(1)
(2)
(3)
a. R
L
= 4
Ω
b. R
L
= 8
Ω
(1) V
DD
= 2.5 V.
(2) V
DD
= 3.6 V.
(3) V
DD
= 5.0 V.
Fig 13. Supply current as a function of output power
0
1200
800
400
1600
I DD
(mA)
P
o
(W)
0 2.0 1.6 0.8 1.2 0.4
001aah509
(1) (2) (3)
0
600
400
200
800
I DD
(mA)
P
o
(W)
0 1.6 1.2 0.4 0.8
001aah510
(1) (2) (3)