TDF8555J NXP Semiconductors, TDF8555J Datasheet - Page 43

• Manufacturer Part Number: TDF8555J
• Description: The TDF8555J is one of a new generation of complementary quad Bridge-Tied Load(BTL) audio power amplifiers with full I²C-bus controlled diagnostics, multiple voltageregulator and two power switches intended for automotive applications
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 26.
Refer to test circuit (see
guaranteed for T
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
TDF8555J
Product data sheet
Symbol Parameter
Load regulation
V
Power switch 1 antenna: pin SW1
V
I
I
Power switch 2 amplifier: pin SW2
V
I
I
Backup mechanism
I
V
V
O
OS
O
OS
bu
do
do
CL
do
O
The quiescent current is measured in standby mode when R
The dropout voltage of regulator 3 is the voltage difference between V
The dropout voltage of a regulator is the voltage difference between V
At current limit, V
The foldback current protection limits the dissipation power at short-circuit; see
The dropout voltage of regulator 2 is the voltage difference between V
Regulator output still in regulation at applied test voltage, therefore the actual dropout voltage can not be measured.
The current capability of regulator 3 is sufficient to drive NXP Semiconductors’ DSP devices SAF7730, SAF7740 or SAF7741.
output voltage variation
dropout voltage
output current
output short-circuit current
dropout voltage
output current
output short-circuit current
backup current (DC)
clamping voltage
dropout voltage
Voltage regulator characteristics
j
=

O(reg)
40

Figure
is held constant; see
C to +150
29) at T

C.
amb
All information provided in this document is subject to legal disclaimers.
= 25
Figure
Conditions
0.5 mA  I
I
I
V
R
I
I
V
R
V
V
I
O
O
O
O
O
O
O
BUCAP
P
L
L
= 300 mA
= 400 mA
= 300 mA
= 400 mA
= 500 mA; (V
 0.5 
 0.5 
= 30 V; I
 8.5 V
 8.5 V
…continued

Rev. 1 — 15 September 2011
C; V
15.
 6 V
P
O
= 14.4 V; unless otherwise specified. Tested at T
O(reg2)
 100 mA
4 45 W power amplifier with multiple voltage regulator
L
= .
P
 V
= 100 mA
BUCAP
DCDC
P
BUCAP
and V
)
and V
and V
O(reg)
Figure
O(reg)
O(reg)
.
.
15.
.
[4]
[5]
[4]
[5]
Min
-
-
-
0.5
-
-
-
0.5
-
0.4
-
-
Typ
-
1
250
1
250
1.5
24
0.8
0.6
0.6
0.6
0.6
TDF8555J
amb
© NXP B.V. 2011. All rights reserved.
= 25
Max
100
0.8
1.1
-
-
0.8
1.1
-
-
-
28
1.2

C;
43 of 57
Unit
mV
V
V
A
mA
V
V
A
mA
A
V
V