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参数资料
| 型号： | TDF8554J/N4 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 44 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM37 |
| 封装： | PLASTIC, SOT725-1, 37 PIN |
| 文件页数： | 37/56页 |
| 文件大小： | 597K |
| 代理商： | TDF8554J/N4 |
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TDF8554J
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 1 — 31 August 2011
42 of 56
NXP Semiconductors
TDF8554J
4
45 W power amplifier with multiple voltage regulator
[1]
The quiescent current is measured in standby mode when RL = .
[2]
The rise and fall times are measured with a 50 pF load capacitor.
[3]
The reset delay time depends on the value of the reset capacitor:
[4]
The dropout voltage of a regulator is the voltage difference between VP and VO(REG).
[5]
[6]
The foldback current protection limits the dissipation power at short-circuit; see Figure 15.
[7]
The dropout voltage of regulator 2 is the voltage difference between VBUCAP and VO(reg).
IOS
output short-circuit current
RL 0.5
[6] 100
200
-
mA
Line regulation
V
O
output voltage variation
10 V
V
P 18 V
-
3
50
mV
Load regulation
V
O
output voltage variation
0.5 mA
I
O 400 mA
-
100
mV
Power switch 1 antenna: pin SW1
Vdo
dropout voltage
IO = 300 mA
-
0.6
0.8
V
IO = 400 mA
-
0.6
1.1
V
IO
output current
VO 8.5 V
0.5
1
-
A
Power switch 2 amplifier: pin SW2
Vdo
dropout voltage
IO = 300 mA
-
0.6
0.8
V
IO = 400 mA
-
0.6
1.1
V
IO
output current
VO 8.5 V
0.5
1
-
A
Backup mechanism
Ibu
backup current (DC)
VBUCAP 6V
0.4
1.5
-
A
VCL
clamping voltage
VP =30 V; IO(reg2) =100 mA
-
24
28
V
Vdo
dropout voltage
IO = 500 mA; (VP VBUCAP)-
0.6
0.8
V
Table 26.
Voltage regulator characteristics …continued
Refer to test circuit (see Figure 30) at Tamb =25 C; VP = 14.4 V; unless otherwise specified. Tested at Tamb =25 C;
guaranteed for Tj = 40 C to +150 C.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
t
d rst
C
RESCAP
I
ch
----------------------
V
th rst
C
RESCAP
750
10
3
s
=
=
Fig 22. Reset delay function
mdb511
V
(V)
t (sec)
td(rst)
Vth(rst)
VO(REG2)
VP
VRST
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