The RN5RY202 is a VFM (chopper) control IC that is a high output voltage accuracy, low supply current CMOS process step-up DC/DC converter control IC. The RN5RY202 consists of a voltage reference unit, an error amplifier, an oscillator, a VFM control circuit and feedback resistors. The 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 feedback resistors. Although the series have no CE pins unlike RN5RY××1A, high voltage (VOUT=30V) can be also output by using external feedback resistors.
The RN5RY202 Series are VFM (chopper) Control ICs for step-up DC/DC converters with an external power transistor. These ICs feature high output voltage accuracy and low supply current achieved through a CMOS process. The series includes a voltage reference unit, error amplifier, oscillator, VFM control circuit, and feedback resistors.
| Output Voltage (Fixed) | 2V |
|---|---|
| Temperature-Drift Coefficient | +50ppm/°C |
| Operating Temperature | -40 to +85 °C |
| Package Type | SOT-23-5 |
| Maximum Oscillator Frequency | 180 kHz |
| Output Voltage Accuracy | 2.5% |
The output voltage is fixed at 2V within the IC.
The operating temperature range is from -40 to +85 °C.