TL494CDG View Datasheet(PDF) - ON Semiconductor

Part Name

Description

Manufacturer

TL494CDG

SWITCHMODE™ Pulse Width Modulation Control Circuit

ON Semiconductor 

+Vin = 10V to 40V

TL494, NCV494

Tip 32A

47

150

47k

50 +

50V

12

VCC

CT RT

5

6

8 11

C1 C2

TL494

D.T. O.C. Gnd E1 E2

4 13 7 9 10

0.1

Comp 3

−2

+1

Vref 14

− 15

+ 16

0.001

47k

1.0M

5.1k

5.1k

150

1.0mH @ 2A

+VO = 5.0 V

IO = 1.0 A

5.1k

MR850

500 +

10V

+ 50

10V

0.1

Figure 21. Pulse Width Modulated Step−Down Converter

Test

Line Regulation

Load Regulation

Output Ripple

Short Circuit Current

Efficiency

Conditions

Vin = 8.0 V to 40 V

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

Vin = 12.6 V, IO = 200 mA

Vin = 12.6 V, RL = 0.1 W

Vin = 12.6 V, IO = 200 mA

Results

3.0 mV 0.01%

5.0 mV 0.02%

40 mV pp P.A.R.D.

250 mA

72%

http://onsemi.com

11

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