VFM STEP-UP DC/DC CONVERTER CONTROLLER
RN5RY××1 SERIES
APPLICATION MANUAL
NO.
EA-030-0006
VFM STEP-UP DC/DC CONVERTER CONTROLLER
RN5RY ××1 SERIES
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( M...