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TDA7570STN/a82avaiSingle or dual PWM BTL output
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E-TDA7570 ,Single or dual PWM BTL outputAbsolute maximum ratings . . . . . 73.2 Thermal data . . . . . . . 73.3
E-TDA7570 ,Single or dual PWM BTL outputFeatures■ Output power 2 x 70W / 1 x 250W @ THD<1%■ PWM output■ ±30V supply voltage (Max)■ Stand-by ..
E-TDA7570 ,Single or dual PWM BTL outputElectrical specifications . . . . . . 73.1
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E-TDA7570-TDA7570
Single or dual PWM BTL output
September 2013 Rev 2 1/17
TDA7570

250W PWM high efficiency power audio amplifier
Features
Output power 2 x 70W / 1 x 250W @ THD<1% PWM 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.
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
Contents TDA7570
2/17
Contents 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 Figure3 . . . . . . . . . . . . . . . . 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
TDA7570 Block and simplified application diagram
3/17 Block and simplified application diagram
Figure 1. Block and simplified application diagram
Pin description TDA7570
2 Pin description
Figure 2. Pins connection diagram

Table 2. Pins description
TDA7570 Pin description
5/17
Table 2. Pins description (continued)
Pin description TDA7570
6/17
Table 2. Pins description (continued)
TDA7570 Electrical specifications
7/17
3 Electrical specifications
3.1 Absolute maximum ratings


3.2 Thermal data


3.3 Electrical characteristics


Table 3. Absolute maximum ratings
Table 4. Thermal data
Table 5. Electrical characteristics

(VS = ±25V, RL = 4, f = 100Hz, Tj = 25°C, Gain = 28dB, application circuit shown in
Figure 3, 2x65/1x130W system, unless otherwise specified.)
Electrical specifications TDA7570
8/17
Table 5. Electrical characteristics (continued)

(VS = ±25V, RL = 4, f = 100Hz, Tj = 25°C, Gain = 28dB, application circuit shown in
Figure 3, 2x65/1x130W system, unless otherwise specified.)
TDA7570 Electrical specifications
9/17
Table 5. Electrical characteristics (continued)

(VS = ±25V, RL = 4, f = 100Hz, Tj = 25°C, Gain = 28dB, application circuit shown in
Figure 3, 2x65/1x130W system, unless otherwise specified.)
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