TDF8555J NXP Semiconductors, TDF8555J Datasheet - Page 5

• 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
5. Block diagram
TDF8555J
Product data sheet
Fig 1.
Block diagram
BUCAP
V
DCDC
SDA
STB
SCL
IN4
IN1
IN2
IN3
V
P
22
11
12
15
14
36
35
26
2
4
V
STANDBY/MUTE
P
MECHANISM
BACKUP
SVR
10
All information provided in this document is subject to legal disclaimers.
TEMPERATURE
PROTECTION
PROTECTION
LOADDUMP
ENABLE
LOGIC
Rev. 1 — 15 September 2011
SGND
REFERENCE
VOLTAGE
13
MUTE
MUTE
MUTE
MUTE
INTERFACE
I
2
C-BUS
ACGND
4 45 W power amplifier with multiple voltage regulator
16
26 dB/
16 dB
26 dB/
16 dB
26 dB/
16 dB
26 dB/
16 dB
PGND1
8
CLIP DETECT/DIAGNOSTIC
REGULATOR 2
REGULATOR 6
REGULATOR 1
REGULATOR 3
REGULATOR 4
REGULATOR 5
PGND2/TAB
SWITCH 1
SWITCH 2
PROTECTION/
PROTECTION/
PROTECTION/
PROTECTION/
TDF8555J
DIAGNOSTIC
DIAGNOSTIC
DIAGNOSTIC
DIAGNOSTIC
1
PGND3
18
PGND4
24
37
28
30
31
33
34
29
27
32
20
25
17
19
21
23
6
9
7
5
3
001aan411
REG2
REG6
REG1
REG3
REG4
REG5
SW1
SW2
GND
V
V
DIAG
OUT1+
OUT1-
OUT2+
OUT2-
OUT3+
OUT3-
OUT4+
OUT4-
P1
P2
TDF8555J
© NXP B.V. 2011. All rights reserved.
5 of 57