RICOH RN5RY202 Data Sheet
Summary
This highly accurate Voltage Feedback Mode (VFM) Control IC is engineered for building low-ripple, high-efficiency step-up DC/DC converters with minimal current draw. Ideal for designers creating constant voltage power sources for portable and battery-powered electronics, including cameras, communication tools, and instrumentation. The comprehensive manual details technical specifications, application guidelines, pin configurations, and necessary component selection advice to ensure optimal performance across various output voltages (up to 30V).
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查询RN5RY202供应商
VFM STEP-UP DC/DC CONVERTER CONTROLLER
NO.EA-042-0006
RN5RY202
OUTLINE The RN5RY202 Series are VFM (chopper) Control ICs for step-up DC/DC converter with an external power transis- tor featuring high output voltage accuracy and low supply current by CMOS process. Each of the RN5RY202 Series ICs consists of a voltage reference unit, an error amplifier, an oscillator, a VFM control circuit and feed back resistors. Output voltage is fixed at 2V in the IC. A low ripple, high efficiency step-up DC/DC converter can be constructed by simply adding an inductor, a diode, a capacitor, and a drive transistor and feed back resistors. Although the series have no CE pins unlike RN5RY××1A, high voltage (VOUT=30V) can be also output by using external feed back resistors.
FEATURES • Low Supply Current............................................................................TYP. 3µA
...................TYP. ±50ppm/˚C
• Low Temperature-Drift Coefficient of Output Voltage
• High Accuracy Output Voltage
......................................MAX. 0.8V
• Low Oscillation Start-up Voltage (no load) • Any output voltage can be set with external resistors • Small Package SOT-23-5 (Mini-Mold)
APPLICATIONS • Constant voltage power source for battery-powered instruments. • Constant power source for cameras, camcorders, pagers, and other hand-held communication tools. • Constant power source for devices that require higher voltages than battery voltages.
BLOCK DIAGRAM
VOUTVDD
Oscillator
Output Buffer
Page Summary Contents For RICOH RN5RY202 Data Sheet
Manual Details
| Brand | Ricoh |
|---|---|
| Pages | 9 |
| File Size | 53.29 KB |
| Published | May 27, 2026 |
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Frequently Asked Questions
What is the fixed output voltage of the RN5RY202 series?
The internal output voltage is fixed at 2V.
How can I change the output voltage to a higher level (e.g., 30V)?
High voltages (up to VOUT=30V) can be achieved by using external feedback resistors.
What are the recommended components for constructing the DC/DC converter?
You need an inductor, diode, capacitor, a drive transistor, and feedback resistors.
What operating temperature range does this IC support?
It supports operation from -40 to +85 °C.