ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

Supply Voltage

35

V

Flyback Peak Voltage

65

V

Trigger Input Voltage

20

V

Amplifier Input Voltage

V

Output Peak-to-peak Current (non repetitive t = 2ms)

6

A

Output Peak-to-peak Current t > 10

µs4

A

100

mA

3

A

°C30

W

Storage Temperature

– 40, +150

°C

Junction Temperature

0, +150

°C

Ambient Temperature

0, +70

°C

THERMAL DATA

Symbol

Parameter

Value

Unit

Thermal Resistance Junction-tab

Max.

3

°C/W

Thermal Resistance Junction-ambient

Max.

40

°C/W

RAMP

GENERATOR

VOLTAGE

R EGULATOR

FLYBACK

GENERATOR

THERMAL

P ROTECTION

2

3

6

8

10

BUFFER

S TAGE

11

CLOCK

P ULSE

P OWER

AMP .

R3

1

79

4

TRIG-IN

TDA81 74

BLOCK DIAGRAM

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Pin 2 Quiescent Current

16

36

mA

Pin 10 Quiescent Current

15

30

mA

Ramp Generator Bias Current

0.5

µA

Ramp Generator Current

µA

18.5

20

21.5

µA

Ramp Generator Linearity

µA

0.2

1

%

Quiescent Output Voltage

17.0

17.8

18.6

V

7.2

7.5

7.8

V

Out Saturation Voltage to GND

0.5

1

V

1

1.4

V

1.1

1.6

V

1.6

2.2

V

TDA8174 - TDA8174W

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