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TDA7570 Datasheet

250W PWM High Efficiency Power Audio Amplifier

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TDA7570
250W PWM high efficiency power audio amplifier
Features
Output power 2 x 70W / 1 x 250W @ THD<1%
www.DataSheet4U.comPWM output
±30V supply voltage (Max)
Stand-by
Mute
Protections against short circuit across the load
Chip thermal protection
External temperature sensor possibility
Thermal warning pins
Adjustable clip detector pin
Description
The TDA7570 is a switchmode power audio
amplifier with differential inputs and PWM output.
HiQUAD64
The maximum output current and voltage swing
are depending by the output circuitry (power
supply, external power transistors and sensing
resistors). The device can work as a stereo
single-ended channels or a mono bridge power
amplifier.
Table 1.
Device summary
Order code
TDA7570
Package
HiQUAD64
Packing
Tray
August 2007
Rev 1
1/17
www.st.com
17


STMicroelectronics Electronic Components Datasheet

TDA7570 Datasheet

250W PWM High Efficiency Power Audio Amplifier

No Preview Available !

Contents
Contents
TDA7570
1
2
3
www.DataSheet4U.com
4
5
6
Block and simplified application diagram . . . . . . . . . . . . . . . . . . . . . . . 3
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4 Notes on the electrical schematic shown in Figure 3 . . . . . . . . . . . . . . . . 11
3.4.1 Main characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Functions, pins and components description . . . . . . . . . . . . . . . . . . . 12
4.1 Components with critical placement and type: . . . . . . . . . . . . . . . . . . . . . 12
4.2 Input capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.3 Short circuit protection current calculation . . . . . . . . . . . . . . . . . . . . . . . . 12
4.4 External thermal protection network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.5 Gate driving network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.6 External connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Package informations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2/17


Part Number TDA7570
Description 250W PWM High Efficiency Power Audio Amplifier
Maker STMicroelectronics
Total Page 17 Pages
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