Pulse-Width-Modulation Control Circuits

TL494

ABSOLUTE MAXIMUM RATINGS OVER OPERATING FREE-AIR TEMPERATURE RANGE

RECOMMENDED OPERATING CONDITIONS

Electrical characteristics over recommended operatng free-air temperature range,

Vcc=15V, f= 10 kHz(unless otherwise noted).

Oscillator section (See Figure 1)

2008 - Ver. 1.2

HTC

1

4 / 6

Frequency change with temperature****

KHz

Standard deviation of frequency****

10

%

Frequency change with voltage

0.1

Frequency

10

mA

Parameter

Test Conditions*

Value

Unit

MIN

TYP**

MAX

Short-circuit output current***

Vref = 0

35

Unit

V

mV

Output voltage change with temperature

0.2

1

%

-40

85

Oscillator frequency

1

300

KHz

Parameter

Value

Unit

V

Unit

V

mA

Storage temperature range

-65 to 150

Lead temperature 1,6 mm from case for 10 seconds

260

Output regulation

Io = 1mA to 10mA

1

15

4.75

5

5.25

Input regulation

Vcc = 7V to 40 V

2

25

MIN

TYP**

MAX

Output voltage (Vref)

lo = 1mA

Parameter

Test Conditions*

Value

1.8

500

KΩ

0.47

10000

nF

Current into feedback terminal

0.3

mA

Collector output current (each transistor)

200

Amplifier input voltage, Vi

-0.3

Vcc -2

Collector output voltage, Vo

40

MIN

MAX

Supply voltage, Vcc

7

40

Amplifier input voltage

Vcc +0.3

Collector output voltage

41

Collector output current

250

Operating free-air temperature range

-40 to 125

Rating

Value

Supply voltage, Vcc

41