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RN5RY301 Datasheet(PDF) 2 Page - RICOH electronics devices division

Part No. RN5RY301
Description  VFM STEP-UP DC/DC CONVERTER CONTROLLER 
Download  13 Pages
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Maker  RICOH [RICOH electronics devices division]
Homepage  http://www.ricoh.com
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RN5RY301 Datasheet(HTML) 2 Page - RICOH electronics devices division

 
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VFM STEP-UP DC/DC
CONVERTER CONTROLLER
RN5RY
××1 SERIES
1
OUTLINE
The RN5RY
××1 Series are VFM Control ICs for step-up DC/DC converter with an external driver transistor
featuring high output voltage accuracy and low supply current by CMOS process. Each of the RN5RY
××1 Series
ICs consists of a voltage reference unit, an error amplifier, an oscillator, a VFM control circuit and feed back resis-
tors. A low ripple, high efficiency step -up DC/DC converter can be composed of the RN5RY
××1 Series with only
an inductor, a diode, a capacitor, and a drive transistor.
Since the package for these ICs are SOT-23-5( Mini-mold)package, high density mounting of the ICs on boards
is possible.
Low Supply Current ..................................................................................TYP. 3µA
Low Standby Current ..................................................................................TYP. 0.6µA
Low Temperature-Drift Coefficient of Output Voltage ...........................TYP. ±50ppm / ˚C
High Accuracy Output Voltage ...................................................................±2.5%
Low Oscillation Start-up Voltage ...............................................................MAX. 0.8V
Small Package .............................................................................................SOT-23-5(Mini-Mold)
FEATURES
APPLICATIONS
Power source for battery-powered instruments.
Power source for cameras, VCRs, camcorders, pagers, and other hand-held communication instruments.
BLOCK DIAGRAM
+
5
3
1
2
Vref
OSC
Output
Buffer
CE
EXT
VOUT
GND


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