Ricoh RN5RK Series VFM Step-Up DC/DC Converter Datasheet

The RN5RK series is a CMOS-based VFM (Chopper) Step-up DC/DC converter IC with ultra low supply current and high output voltage accuracy.

Brand: Ricoh
Category: Power Management
Document type: Datasheet
Language: English
Pages: 23
File format: PDF
File size: 354 KB
Published: 09 July, 2012
Updated: 28 September, 2023
Model: RN5RK
MD5 checksum: 3AEB926BF4C5BC13ADE3F0A50BF04CD6
PDF: Ricoh RN5RK Series VFM Step-Up DC/DC Converter Datasheet PDF

About this manual

The RN5RKxx1A/xx1B/xx2A Series are CMOS-based VFM (Chopper) Step-up DC/DC converter ICs designed for ultra-low supply current and high output voltage accuracy. The RN5RKxx1A/xx1B models include an internal driver transistor with low ON resistance, while the RN5RKxx2A model utilizes an external transistor drive pin to support larger output currents. These ICs are packaged in SOT-23-5 for high-density mounting.

What's inside

Outline
Features
Applications
Selection Guide
Pin Configurations
Absolute Maximum Ratings
Electrical Characteristics
Typical Applications
Technical Notes

Specifications

Output Voltage Range	2.0V to 5.5V
Output Voltage Accuracy	±100ppm/°C
Operating Temperature Range	-40 to 85 °C
Package Type	SOT-23-5
Oscillator Frequency	80 to 120 kHz

Frequently asked questions

What external components are required for the RN5RKxx1A/xx1B?

Only an inductor, a diode, and a capacitor are required.

What is the difference between RN5RKxx1A/xx1B and RN5RKxx2A?

The xx2A model uses an external transistor drive pin instead of an internal Lx pin to support larger output currents.

What type of diode is recommended for the application?

A Schottky type diode with high switching speed is recommended.

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