NJU7660A 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJU7660A

VOLTAGE CONVERTER

Japan Radio Corporation  

NJU7660A

（3）Cascade Connection (Negative Voltage Output)

VIN

②①

C1 +

10F -

1 N.C

V+ 8 +

2 C+ OSC 7 -

(1)

3 GND VR 6

C3

10F

4 C-

VOUT 5

NJU7660A

()

-

+

C2

10F

C1 1 N.C

10F

V+ 8 +

-

+

2

C+

OSC

(n)

7

-

3 GND VR 6

C3

10F

① VOUT = -nVIN

② VOUT = -(2n-1) VIN

4 C-

VOUT 5

NJU7660A

()

VOUT

- C2

+ 10F

*Can also be used ceramic capacitor.(C1,C2,C3)

*Capacitance of C3 is equal to C1,C2 or more.

(*8): VR pin must connect to GND or Open according to the operating voltage as follows:

V+ < 3.5V :Connected to GND

V+  3.5V :OPEN

(*9): In case of the operation voltage is 6.5V or more, a Diode must be connected to VOUT pin. If it is less than 6.5V, the

Diode is not required

(*10): In case of the cascade connection (Negative Voltage Output), VR pins (after second IC’s) must connect as follows,

according to V+ - GND Voltage.

V+ - GND < 3.5V :Connected to GND

V+ - GND  3.5V :OPEN

(*11): Output resistance becomes total of the Ro of every NJU7660A

-6-

Ver.2014-05-20

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