NJU7677 View Datasheet(PDF) - Japan Radio Corporation

Part Name

Description

Manufacturer

NJU7677

1.8V Operate PWM control Step-Up / Flyback switching regulator IC

Japan Radio Corporation  

NJU7677

■TYPICAL CHARACTERISTICS

Soft Start Time vs. Temperature

8

(V+=3.3V)

7

6

5

4

3

2

-50 -25 0 25 50 75 100 125

Ambient Temperature Ta (oC)

Oscillator Frequency vs. Temperature

760

(V+=3.3V, R =47kΩ)

T

740

720

700

680

660

640

-50 -25 0 25 50 75 100 125

Ambient Temperature Ta (oC)

Under Voltage Lockout Block

vs. Temperature

1.8

1.75

1.7

V

T_ON

1.65

1.6

1.55

V

T_OFF

1.5

-50 -25 0 25 50 75 100 125

Ambient Temperature Ta (oC)

Reference Voltage vs. Temperature

1.01

(V+=3.3V)

1.005

1

0.995

0.99

-50 -25 0 25 50 75 100 125

Ambient Temperature Ta (oC)

Muximum Duty Cycle vs. Temperature

(V+=3.3V)

100

90

MD

80

AX UTY_1

70

60

MD

AX UTY_2

50

40

-50 -25 0 25 50 75 100 125

Ambient Temperature Ta (oC)

1000

Quiescent Current vs. Temperature

(V+=3.3V, R =47kΩ)

T

800

600

400

200

0

-50 -25 0 25 50 75 100 125

Ambient Temperature Ta (oC)

-8-

Ver.2009-09-08

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