TL494CDG datasheet(2/14 Pages) ONSEMI

Numer części	TL494CDG

Szczegółowy opis	SWITCHMODE TM Pulse Width Modulation Control Circuit

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TL494, NCV494

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RECOMMENDED OPERATING CONDITIONS

Characteristics

Symbol

Min

Typ

Max

Unit

Power Supply Voltage

VCC

7.0

15

40

V

Collector Output Voltage

VC1, VC2

−

30

40

V

Collector Output Current (Each transistor)

IC1, IC2

−

200

mA

Amplified Input Voltage

Vin

−0.3

−

VCC − 2.0

V

Current Into Feedback Terminal

lfb

−

0.3

mA

Reference Output Current

lref

−

10

mA

Timing Resistor

RT

1.8

30

500

k

W

Timing Capacitor

CT

0.0047

0.001

10

mF

Oscillator Frequency

fosc

1.0

40

200

kHz

ELECTRICAL CHARACTERISTICS (VCC = 15 V, CT = 0.01 mF, RT = 12 kW, unless otherwise noted.)

For typical values TA = 25°C, for min/max values TA is the operating ambient temperature range that applies, unless otherwise noted.

Characteristics

Symbol

Min

Typ

Max

Unit

REFERENCE SECTION

Reference Voltage (IO = 1.0 mA)

Vref

4.75

5.0

5.25

V

Line Regulation (VCC = 7.0 V to 40 V)

Regline

−

2.0

25

mV

Load Regulation (IO = 1.0 mA to 10 mA)

Regload

−

3.0

15

mV

Short Circuit Output Current (Vref = 0 V)

ISC

15

35

75

mA

OUTPUT SECTION

Collector Off−State Current

(VCC = 40 V, VCE = 40 V)

IC(off)

−

2.0

100

mA

Emitter Off−State Current

VCC = 40 V, VC = 40 V, VE = 0 V)

IE(off)

−

−100

mA

Collector−Emitter Saturation Voltage (Note 2)

Common−Emitter (VE = 0 V, IC = 200 mA)

Emitter−Follower (VC = 15 V, IE = −200 mA)

Vsat(C)

Vsat(E)

−

1.1

1.5

1.3

2.5

V

Output Control Pin Current

Low State (VOC v 0.4 V)

High State (VOC = Vref)

IOCL

IOCH

−

10

0.2

−

3.5

mA

Output Voltage Rise Time

Common−Emitter (See Figure 12)

Emitter−Follower (See Figure 13)

tr

−

100

200

ns

Output Voltage Fall Time

Common−Emitter (See Figure 12)

Emitter−Follower (See Figure 13)

tf

−

25

40

100

ns

2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.

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