Datasheet > RS5RJ3327B-T1

RS5RJ3327B-T1

更新时间： 2023-08-15 00:00:00

品牌	Logo	应用领域
理光 - RICOH		光电二极管
页数	文件大小	规格书
29页	574K
描述
Switching Regulator, Voltage-mode, 0.25A, 100kHz Switching Freq-Max, CMOS, PDSO8, SOP-8

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RS5RJ3327B-T1 数据手册

RS5RJ

OPERATION OF STEP-UP DC/DC CONVERTER

Step-up DC/DC Converter charges energy in the inductor when Lx Transistor (LxTr) is ON, and discharges the

energy with the addition of the energy from Input Power Source thereto when LxTr is off, so that a higher output

voltage than the input voltage is obtained.

The operation will be explained with reference to the following diagrams:

< Basic Circuits >

< Current through L >

IL min

IL max

IOUT

VOUT

topen

V^IN

L^XTr

ton

toff

T=1/ fosc

Step.1 : LxTr is turned on and current IL (= i1 ) flows, so that energy is charged in L. At this moment, IL(=i1 ) is

increased from ILmin (= 0) to reach ILmax in proportion to the on-time period (ton) of LxTr.

Step.2 : When LxTr is turned off, Schottky diode (SD) is turned on in order that L maintains IL at ILmax, so that

current IL (= i2) is released.

Step.3 : IL (=i2) is gradually decreased, and in the case of discontinuous mode, IL reaches ILmin (=0) after a time

period of topen, so that SD is turned off.

In the case of the VFM control system, with the on-time period (ton) maintained constant, the output voltage

is maintained constant by controlling the oscillator frequency (fosc).

1...4 5 678 9 10...29

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型号	品牌	描述	获取价格	数据表
RS5RJ3327B-T2-FA	RICOH	Switching Regulator, Voltage-mode, 0.25A, 100kHz Switching Freq-Max, CMOS, PDSO8, SOP-8	获取价格
RS5RJ3328A-T1	RICOH	Switching Regulator, Voltage-mode, 0.25A, 100kHz Switching Freq-Max, CMOS, PDSO8, SOP-8	获取价格
RS5RJ3328A-T2-FA	RICOH	Switching Regulator, Voltage-mode, 0.25A, 100kHz Switching Freq-Max, CMOS, PDSO8, SOP-8	获取价格
RS5RJ3328B-T2	RICOH	Switching Regulator, Voltage-mode, 0.25A, 100kHz Switching Freq-Max, CMOS, PDSO8, SOP-8	获取价格
RS5RJ3328B-T2-FA	RICOH	Switching Regulator, Voltage-mode, 0.25A, 100kHz Switching Freq-Max, CMOS, PDSO8, SOP-8	获取价格
RS5RJ3329A	RICOH	VFM STEP-UP DC/DC CONVERTER WITH VOLTAGE REGULATOR AND DETECTOR	获取价格