NJU7670 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJU7670

VOLTAGE TRIPLER

Japan Radio Corporation  

NJU7670

■ TERMINAL DESCRIPTION

No.

SYMBOL

FUNCTION

1

C1+

Charge Pump Capacitor 1(+) Connecting Terminal

2

C1-

Charge Pump Capacitor 1(-) Connecting Terminal

3

C2+

Charge Pump Capacitor 2(+) Connecting Terminal

4

C2-

Charge Pump Capacitor 2(-) Connecting Terminal

5

NC

Non Connection

6

NC

Non Connection

7

VIN

Power Supply Terminal (-)

8

VOUT

Voltage Output Terminal

9

Vreg

Voltage Regulator Output Terminal

10

RV

Voltage Regulator Adjustment Terminal

11

Poff

Vreg Output ON/OFF Control Terminal

12

NC

Non Connection

13

NC

Non Connection

14

VDD

Power Supply Terminal (+)

■ FUNCTIONAL DESCRIPTION

(1) Voltage Converter

The voltage converter generates double or triple voltage against VIN.

VDD= 0V

VIN=-5V

VOUT=3･VIN=-15V

(2) Voltage Reference Circuit

The voltage reference circuit is generating the reference voltage for a voltage regulator.

(3) Voltage Regulator

The voltage regurator output stabilized voltage which regulated by using the external resistor against double or

triple voltage of the input voltage.

(3-1) Output-OFF Function

As this circuit incorporated output-off function, the voltage regulator output (ON/OFF) is performed by

the signal come from system.

VDD

Voltage

Poff

　　 Regulator RV

Vreg

● ON/OFF Control for Vreg Terminal

Control signal

RRV=100kΩ～1MΩ

Poff Level

"H" (Connect to VDD)

"L" (Connect to VIN)

Vreg Output

ON

OFF

-2-

Ver.2011-02-03

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