UC3843ADR2 datasheet(7/18 Pages) ONSEMI

Part #	UC3843ADR2

Description	High Performance Current Mode Controllers

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Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

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UC3842A, UC3843A, UC2842A, UC2843A

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7

Figure 14. Output Saturation Voltage

versus Load Current

Figure 15. Output Waveform

Figure 16. Output Cross Conduction

Figure 17. Supply Current versus

Supply Voltage

50 ns/DIV

VCC = 15 V

CL = 1.0 nF

TA = 25°C

100 ns/DIV

VCC = 30 V

CL = 15 pF

TA = 25°C

800

600

400

200

0

IO, OUTPUT LOAD CURRENT (mA)

VCC

TA = 25°C

TA = −55°C

GND

TA = 25°C

Source Saturation

(Load to Ground)

TA = −55°C

VCC = 15 V

80

ms Pulsed Load

120 Hz Rate

0

10203040

VCC , SUPPLY VOLTAGE

RT = 10 k

CT = 3.3 nF

VFB = 0 V

ISense = 0 V

TA = 25°C

90%

10%

0

1.0

2.0

3.0

−2.0

−1.0

0

25

20

15

10

5

0

Sink Saturation

(Load to VCC)

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