NJM2817DL3-05 Ver la hoja de datos (PDF) - Japan Radio Corporation

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NJM2817DL3-05

LOW DROPOUT VOLTAGE REGULATOR

Japan Radio Corporation  

NJM2817

TYPICAL APPLICATION

1 In the case where ON/OFF Control is not required:

VIN

VIN

VOUT

*4

4.7µF

NJM2817

R

CONTROL

GND

*4

4.7µF

VOUT

*4 : Vo < 2.1V version : CIN=10µF

Vo < 2.1V version : Co=33µF

Connect control terminal to VIN terminal

2 In use of ON/OFF CONTROL:

VIN

*4

4.7µF

VIN

VOUT

NJM2817

R

CONTROL

GND

*4

4.7µF

VOUT

*4 : Vo < 2.1V version : CIN=10µF

Vo < 2.1V version : Co=33µF

State of control terminal:

•“H”→ output is enabled.

•“L” or “open” → output is disabled.

In the case of using a resistance "R" between VIN and control.

The current flow into the control terminal while the IC is ON state (ICONT) can be reduced when a pull up resistance

"R" is inserted between VIN and the control terminal.

The minimum control voltage for ON state (VCONT (ON)) is increased due to the voltage drop caused by ICONT and the

resistance "R". The ICONT is temperature dependence as shown in the "Control Current vs. Temperature"

characteristics. Therefore, the resistance "R" should be carefully selected to ensure the control voltage exceeds

the VCONT (ON) over the required temperature range.

-4-

Ver.2010-07-12

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