P OWER

AMP LIFIER

4

5

7

THE RMAL

PROTE CTION

1

23

6

FLYBACK

GENER ATOR

INVERTING INPUT

NON-INVERTING INPUT

OUTP UT

GROUND

SUPPLY

VOLTAGE

OUTP UT

STAGE

SUPPLY

FLYBACK

GENERATOR

TDA9 309

BLOCK DIAGRAM

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

Supply Voltage (Pin 2) (see note 1)

40

V

Flyback Peak Voltage (Pin 6) (see note 1)

70

V

Amplifier Input Voltage (Pins 1-7) (see note 1)

V

Voltage at Pin 3 (see note 5)

V

Maximum Output Peak Current (see notes 2 and 3)

1.5

A

Maximum Sink Current (first part of flyback) (t < 1ms)

1.5

A

Maximum Source Current (t < 1ms) (see note 2)

1.5

A

Electrostatic Handling for all pins (see note 4)

2000/300

V

Operating Ambient Temperature

- 20, + 75

Storage Temperature

- 40, + 150

Junction Temperature

+150

Notes :

1.

Versus Pin 4.

2.

The output current can reach 4A peak for t

≤ 10µs (up to 200Hz).

3.

Provided SOAR is respected (see Figures 1 and 2).

4.

Equivalent to discharging a 100pF capacitor through a 1.5k

Ω serial resistor / 200pF capacitor through 0Ω resistor.

5.

This will occur during 1st half of flyback pulse.

THERMAL DATA

Symbol

Parameter

Value

Unit

Junction-case Thermal Resistance

Max.

3

Temperature for Thermal Shutdown

150

Recommended Max. Junction Temperature

120

TDA9309

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