NJU7630_12 datasheet(6/9 Pages) NJRC

Part #	NJU7630

Description	PWM control Step-Down switching regulator IC

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Manufacturer	NJRC [New Japan Radio]

Direct Link	http://www.jrc.co.jp/eng/index.html

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6 / 9 page

NJU7630

- 6 -

Ver.2012-08-03

■ TYPICAL CHARACTERISTICS

100

1000

10

100

Oscillation Frequency vs. Timing Resistance

(V+=3.3V, Ta=25oC)

Timing Resistance R

T

(k

Ω)

660

680

700

720

740

02

4

6

8

10

Operating Voltage V

+ (V)

Oscillation Frequency vs. Operating Voltage

(R

T

=47k

Ω, Ta=25oC)

0

20

40

60

80

100

0

20

406080

100

Dead Time Control Resistance R

DTC

(k

Ω)

Duty Cycle vs. R

DTC

(V+=3.3V, R

T

=47k

Ω, Ta=25oC)

0.996

0.998

1

1.002

1.004

02

4

6

8

10

Operating Voltage V

+ (V)

Reference Voltage vs. Operating Voltage

(Ta=25

oC)

0

200

400

600

800

1000

1200

1400

02

4

6

8

10

Operating Voltage V

+ (V)

Quiescent Current vs. Operating Voltage

(R

T

=47k

Ω, R

L

=Non Load, Ta=25

oC)

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