PC494 查看數據表（PDF） - NEC => Renesas Technology

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PC494

SWITCHING REGULATOR CONTROL CIRCUIT

NEC => Renesas Technology 

µPC494

TYPICAL PERFORMANCE CHARACTERISTICS

5 (Unless otherwise specified, TA = 25°C, VCC = 15 V, Reference)

MAXIMUM POWER DISSIPATION

1.2

* : With 25 cm2 X 1.6 mm

1.0 µPC494C

glass-epoxy substrate

0.8 µPC494G*

Thermal Resistance

Rth(J-A)125˚C/W

5

0.6 µPC494GS1*921˚C60/W˚C/W

0.4

0.2

0

25 50 75 100 125

TA - Ambient Temperature - ˚C

MISS-OPERATION PREVENTION

CIRCUIT CHARACTERISTICS

6

Test Circuit

5V

5

430 Ω

8

4

9

VCE

5

3

2

1

0

4

5

6

7

VCC - Supply Voltage - V

REFERENCE VOLTAGE vs.

SUPPLY VOLTAGE

6

5

4

3

2

1

0

5 10 15 20 25 30 35 40

VCC - Supply Voltage - V

FREQUENCY vs. RT AND CT

500

VCC = 15 V

200

100

50

C

20

10

5

2

0.047

0.01

µF

100T0=p4F70

µF

pF

1

2 5 10 20 50 100 200 500

RT - Timing Resistance - kΩ

REFERENCE VOLTAGE vs.

AMBIENT TEMPERATURE

40

VCC = 15 V

IREF = 1 mA

20

0

–20

–40

–60

–25 0

25 50 75 100

TA - Ambient Temperature - ˚C

FREQUENCY vs.

AMBIENT TEMPERATURE

4

VCC = 15 V

2

RT = 12 kΩ

CT = 0.01 µF

0

–2

–4

–6

–25 0

25 50 75 100

TA - Ambient Temperature - ˚C

Data Sheet G12649EJ4V0DS00

7

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