TL494 datasheet(10/12 Pages) MOTOROLA

Nome de Peças	TL494

Descrição Electrónicos	SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT

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Fabricante Electrônico	MOTOROLA [Motorola, Inc]

Página de início	http://www.freescale.com

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TL494

10

MOTOROLA ANALOG IC DEVICE DATA

Figure 21. Pulse Width Modulated Step–Down Converter

+Vin = 10V to 40V

Tip 32A

1.0mH @ 2A

+VO = 5.0 V

IO = 1.0 A

50

10V

+

5.1k

MR850

0.1

150

5.1k

47k

1.0M

0.1

3

2

1

14

15

16

Comp

–

+

–

Vref

+

VCC

C1

C2

50

50V

0.001

56

4

13

7

9

10

CT

RT

D.T. O.C. Gnd E1 E2

+

47k

+

500

10V

150

47

11

12

8

TL494

Test

Conditions

Results

Line Regulation

Vin = 8.0 V to 40 V

3.0 mV

0.01%

Load Regulation

Vin = 12.6 V, IO = 0.2 mA to 200 mA

5.0 mV

0.02%

Output Ripple

Vin = 12.6 V, IO = 200 mA

40 mV pp

P.A.R.D.

Short Circuit Current

Vin = 12.6 V, RL = 0.1 Ω

250 mA

Efficiency

Vin = 12.6 V, IO = 200 mA

72%

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