R5321D Просмотр технического описания (PDF) - RICOH Co.,Ltd.

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R5321D

CMOS 2ch-LDOs for RF Unit

RICOH Co.,Ltd. 

R5321D

OPERATION

VDD 1

CE1 2

R5324DxxxA

Error Amp.

Vref

Current Limit

R1_1

R2_1

8 VOUT1

7 N.C.

CE2 3

N.C. 4

Error Amp.

Vref Current Limit

R1_2

R2_2

6 VOUT2

5 GND

Fluctuation of each regulator’s output voltage, or VOUT1, VOUT2 is detected individually and put back to an error

amplifier through feedback resistors, or R1_1, R2_1, R1_2, R2_2 and compared with a reference voltage and

compensated for the result and make a constant voltage.

In each regulator, short protection is made by a current limit circuit and stand-by mode is available by a chip

enable circuit.

6

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