NJU7670 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJU7670

VOLTAGE TRIPLER

Japan Radio Corporation  

NJU7670

(3-2) Example of the Voltage Regulation

The voltage regulator has a output terminal which can be adjusted the output voltage to any kind of

voltage by resistance RRV.

As the RV terminal input impedance is high. Therefore special care against noise is required.

(Use a sealed line or others noise-proof method)

Tripler Operation + Voltage Regulator Operation

0.1μF

5V

CIN

VIN=-5V

1 C1+

10μF +

C1 2 C1-

VDD 14

NC 13

3 C2+

10μF +

NC 12

C2 4 C2- NJU7670 Poff 11

Sealed Line

5 NC

RV 10

6 NC

7 VIN

Vreg 9

VOUT 8

+

10μF

C3

R1 RRV

100k～1MΩ

R2

+

10μF

C4

VOUT=-15V

Vreg=-8V=　RRR1V　VRV

The IC may have a possibility not to operate properly with unstable supply voltage due to large

transient current when the capacitor is charged or discharged.

The decoupling capacitor (CIN) connect as close as possible to the IC.

Ver.2011-02-03

-3-

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