R5RL

TYPICAL APPLICATION

VIN

R×5RL

VOUT

VIN

SERIES

VOUT

+

+

 

C1

 

C2

GND

GND GND

In R5RL Series, a constant voltage can be obtained without using Capacitors C1 and C2. However, when the wire connected to Vin is long, use Capacitor C1. Output noise can be reduced by using Capacitor C2.

Insert Capacitors C1 and C2 with the capacitance of 0.1µF to 2.0µF between Input/Output Pins and GND Pin with minimum wiring.

APPLICATION CIRCUITS

• VOLTAGE BOOST CIRCUIT

VIN

R×5RL

VOUT

VIN

SERIES

VOUT

 

 

 

GND

+

 

C2 R1

The output voltage can be obtained by the follow-

ing formula :

*1

VOUT=Vreg · (1+R2/R1) + ISS R · 2

Since the quiescent current of R5RE Series is so small that the resistances of R1 and R2 can be set as

+

C1

ISS

R2

large as several hundreds kΩ and therefore the supply current of “Voltage Boost Circuit” itself can be reduced.

Furthermore, since R5RL Series are operated by a constant voltage, the supply current of “Voltage Boost Circuit” is not substantially affected by the input voltage.

• DUAL POWER SUPPLY CIRCUIT

IC1

 

VIN

VOUT

 

VOUT1

VIN

R×5RL20A

 

 

 

 

 

+

5V

 

 

C1

D

 

 

 

 

GND

 

 

ISS

 

IC2

 

 

 

 

VIN

VOUT

 

VOUT2

 

R×5RL30A

 

 

3V

 

+

 

+

 

C3

R

 

C2

 

 

GND

 

 

 

GND

 

 

 

GND

As shown in the circuit diagram, a dual power supply circuit can be constructed by using two R5RL Series.

This circuit diagram shows a dual power supply circuit with an output of 3V and an output of 5V. When the minimum output current of IC2 is larger than ISS of IC1, Resistor R is unnecessary. Diode D is a protection diode for the case where VOUT2 becomes larger than VOUT1.

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