TDA7854 STMicroelectronics, TDA7854 Datasheet

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TDA7854

Manufacturer Part Number
TDA7854
Description
IC AMP QUAD BRIDGE FLEXIWATT25
Manufacturer
STMicroelectronics
Type
Class ABr
Datasheet

Specifications of TDA7854

Output Type
4-Channel (Quad)
Max Output Power X Channels @ Load
80W x 4 @ 2 Ohm
Voltage - Supply
8 V ~ 18 V
Features
Mute, Short-Circuit and Thermal Protection, Standby
Mounting Type
Through Hole
Package / Case
25-Flexiwatt (bent and staggered leads)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

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Quantity
Price
Part Number:
TDA7854
Manufacturer:
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TDA7854
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Quantity:
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Part Number:
TDA7854L
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Features
Protections:
Table 1. Device summary
October 2007
Multipower BCD technology
High output power capability:
– 4 x 47W/4Ω max.
– 4 x 80W/2Ω max.
MOSFET output power stage
Excellent 2Ω driving capability
Hi-fi class distortion
Low output noise
St-by function
Mute function
Automute at min. supply voltage detection
Low external component count:
– Internally fixed gain (26dB)
– No external compensation
– No bootstrap capacitors
Output short circuit to GND, to V
load
Very inductive loads
Overrating chip temperature with soft thermal
limiter
Load dump voltage
Order code
TDA7854
4 x 47W MOSFET quad bridge power amplifier
s
, across the
Flexiwatt 25
Package
Rev 1
Description
The TDA7854 is a breakthrough MOSFET
technology class AB audio power amplifier in
Flexiwatt 25 package designed for high power car
radio. The fully complementary P-Channel/N-
Channel output structure allows a rail to rail
output voltage swing which, combined with high
output current and minimized saturation losses
sets new power references in the car-radio field,
with unparalleled distortion performances.
Fortuitous open GND
Reversed battery
ESD
Flexiwatt 25
Packing
Tube
TDA7854
www.st.com
1/12
1

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TDA7854 Summary of contents

Page 1

... Fortuitous open GND ■ Reversed battery ■ ESD Description The TDA7854 is a breakthrough MOSFET , across the technology class AB audio power amplifier in s Flexiwatt 25 package designed for high power car radio. The fully complementary P-Channel/N- Channel output structure allows a rail to rail ...

Page 2

... Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.1 SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.2 Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.3 Stand-by and muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.4 Heatsink definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2/12 TDA7854 ...

Page 3

... TDA7854 List of tables Table 2. Thermal data Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 5. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 List of tables 3/12 ...

Page 4

... List of figures List of figures Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2. Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 3. Pin connection (top view Figure 4. Power dissipation vs. output power (R Figure 5. Flexiwatt25 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4/12 = 4Ω, audio program simulation TDA7854 ...

Page 5

... TDA7854 1 Block diagram and application circuit 1.1 Block diagram Figure 1. Block diagram IN1 IN2 IN3 IN4 1.2 Application circuit Figure 2. Application circuit ST-BY MUTE IN1 IN2 IN3 IN4 Vcc1 Vcc2 ST-BY MUTE AC-GND SVR TAB C8 C7 0.1μF 2200μF Vcc1-2 ...

Page 6

... Pin description 2 Pin description 2.1 Pin connection Figure 3. Pin connection (top view) 1 2.2 Thermal data Table 2. Thermal data Symbol R Thermal resistance junction to case th j-case 6/12 Parameter max TDA7854 25 D94AU159mod Value Unit 1 °C/W ...

Page 7

... TDA7854 3 Electrical specifications 3.1 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol V Operating supply voltage supply voltage S (DC) V Peak supply voltage (for t = 50ms) S (pk) Output peak current I Non repetitive (t = 100μs) O Repetitive (duty cycle 10 10Hz) P Power dissipation T tot T Junction temperature j T Storage temperature stg 3 ...

Page 8

... OFF Oref (Amp: Play) (Amp: Mute) (Amp: Mute) ≥ Att 80dB Oref (Amp: Play) Att < 0.1dB 0. 1.2V MUTE (Sourced current 2.6V MUTE Cd Off DC On 1mA CD TDA7854 = 600Ω 1KHz; g Min. Typ. Max. Unit μA 10 μA ±1 2. 2 ...

Page 9

... Input stage The TDA7854's inputs are ground-compatible and can stand very high input signals (± 8Vpk) without any performances degradation. If the standard value for the input capacitors (0.1μF) is adopted, the low frequency cut-off will amount to 16 Hz. ...

Page 10

... Pin ® OUTLINE AND MECHANICAL DATA Flexiwatt25 (vertical FLEX25ME 7034862 TDA7854 packages. ...

Page 11

... TDA7854 6 Revision history Table 5. Document revision history Date 4-Oct-2007 Revision 1 Initial release. Revision history Changes 11/12 ...

Page 12

... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 12/12 Please Read Carefully: © 2007 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com TDA7854 ...

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