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부품번호 TDF8555J 기능
기능 I2C-bus controlled 4 x 45W power amplifier and multiple voltage regulator
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TDF8555J 데이터시트, 핀배열, 회로
TDF8555J
I2C-bus controlled 4 45 W power amplifier and multiple
voltage regulator
Rev. 1.1 — 15 September 2011
Product data sheet
1. General 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 voltage
regulator and two power switches intended for automotive applications.
The TDF8555J can operate at a battery voltage as low as 6 V making this amplifier
suitable for stop/start-car operation. The amplifier uses a complementary DMOS output
stage in a Silicon-On-Insulator (SOI)-based BCD process. The DMOS output stage
ensures a high power output signal with perfect sound quality. The SOI-based BCD
process ensures a robust amplifier, where latch-up cannot occur, with good separation
between the four independent channels with every component isolated and without
substrate currents.
The multiple voltage regulator comprises four programmable voltage regulators, two
standby regulators and two power switches.
The TDF8555J is soft- and hardware downwards-compatible with its predecessor
TDF8551J.
The TDF8555J includes features, such as selectable undervoltage for stop/start-cars
which can be selected with additional I2C-bus instruction bytes. If these additional bytes
are not sent, the TDF8555J has the same functionality as its predecessor IPAS
TDF8551J.
2. Features and benefits
Amplifier
Stop/start-car prepared: keeps operating without audible disturbance during
engine start at a battery voltage as low as 6 V
I2C-bus mode (3.3 V and 5 V compliant)
Can drive 2 or 4 loads
Speaker fault detection
Start-up diagnostics with load detection: open, short, present; filtered for door-slam
and chatter relays
AC load (tweeter) detection with low and high current mode
Gain select after start-up without audible disturbance
Programmable gain (26 dB and 16 dB), independently programmable for the front
and rear channels
Line driver mode (16 dB and mid-tap voltage 0.25VP for stop/start-cars)
Programmable clip detection: 2 %, 5 % or 10 %




TDF8555J pdf, 반도체, 판매, 대치품
NXP Semiconductors
TDF8555J
4 45 W power amplifier with multiple voltage regulator
Table 1. Quick reference data …continued
Symbol Parameter
Conditions
Regulator 4
VO(reg) regulator output voltage 10 V VP 18 V; 0.5 mA IO 800 mA;
selectable via I2C-bus
IB2[D7:D5] = 001
IB2[D7:D5] = 010
IB2[D7:D5] = 011
IB2[D7:D5] = 101
IB2[D7:D5] = 100
Regulator 5
VO(reg)
regulator output voltage
0.5 mA IO 400 mA
10 V VP 18 V; IB1[D7:D4] = 1011
10 V VP 18 V; IB1[D7:D4] = 1010
10 V VP 18 V; IB1[D7:D4] = 0001
10 V VP 18 V; IB1[D7:D4] = 0010
10 V VP 18 V; IB1[D7:D4] = 0011
10.5 V VP 18 V; IB1[D7:D4] = 0100
11 V VP 18 V; IB1[D7:D4] = 0101
11.5 V VP 18 V; IB1[D7:D4] = 0110
13 V VP 18 V; IB1[D7:D4] = 0111
14.2 V VP 18 V; IB1[D7:D4] = 1000
12.5 V VP 18 V; IB1[D7:D4] = 1001
Regulator 6
VO(reg) regulator output voltage
Power switches
Vdo dropout voltage
10 V VP 18 V; 0.5 mA IO 100 mA
switch 1; IO = 400 mA
switch 2; IO = 400 mA
Min Typ
Max
4.75 5.0
5.7 6.0
6.6 7.0
7.6 8.0
8.1 8.6
5.25
6.3
7.4
8.4
9.1
3.1
4.75
5.7
6.65
7.8
8.55
9
9.5
9.9
11.8
VP
1.0
3.3
5.0
6.0
7.0
8.2
9.0
9.5
10
10.4
12.5
-
3.5
5.25
6.3
7.37
8.6
9.45
10
10.5
10.9
13.2
-
4.75 5.0
5.25
- 0.6 1.1
- 0.6 1.1
[1] If the regulator is set to a voltage higher than the supply voltage, the regulator will act as a switch with a voltage drop of 1 V.
Unit
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
4. Ordering information
Table 2. Ordering information
Type number
Package
Name
TDF8555J/N1
DBS37P
Description
Version
plastic DIL-bent-SIL power package; 37 leads (lead length 6.8 mm) SOT725-1
TDF8555J
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 15 September 2011
© NXP B.V. 2011. All rights reserved.
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TDF8555J 전자부품, 판매, 대치품
NXP Semiconductors
TDF8555J
4 45 W power amplifier with multiple voltage regulator
6.2 Pin description
Table 3. Pin description
Symbol
Pin
PGND2/TAB
1
SDA
2
OUT2
3
SCL 4
OUT2+
5
VP2
OUT1
6
7
PGND1
8
OUT1+
9
SVR
10
IN1 11
IN2 12
SGND
13
IN4 14
IN3 15
ACGND
16
OUT3+
17
PGND3
18
OUT3
19
VP1
OUT4+
20
21
STB 22
OUT4
23
PGND4
24
DIAG
25
VDCDC
SW2
26
27
REG6
28
SW1
29
REG1
30
REG3
31
GND
REG4
32
33
REG5
34
Description
power ground 2 and connection for heatsink
I2C-bus data input and output
channel 2 negative output
I2C-bus clock input
channel 2 positive output
power supply voltage 2 to amplifiers
channel 1 negative output
power ground 1
channel 1 positive output
half supply voltage filter capacitor
channel 1 input
channel 2 input
signal ground
channel 4 input
channel 3 input
AC ground
channel 3 positive output
power ground 3
channel 3 negative output
power supply voltage 1 to amplifiers
channel 4 positive output
standby or operating mode select input
channel 4 negative output
power ground 4
diagnostic and clip detection output, active LOW
power supply voltage from optional DC-to-DC converter
antenna switch; supplies unregulated voltage to car aerial motor
regulator 6 output; supply voltage for I2C-bus
amplifier switch output
regulator 1 output; supply voltage for audio section of radio and CD
player
regulator 3 output; supply voltage for signal processor section
(mechanical digital) of CD player
combined voltage regulator, power and signal ground
regulator 4 output; supply voltage for mechanical section
(mechanical drive) of CD player
regulator 5 output; supply voltage for display section of radio and
CD player
TDF8555J
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 15 September 2011
© NXP B.V. 2011. All rights reserved.
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TDF8555J

I2C-bus controlled 4 x 45W power amplifier and multiple voltage regulator

NXP Semiconductors
NXP Semiconductors

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