The R1243x Series is a 30V input, CMOS-based PWM step-down DC/DC converter with 2A∗ output current. R1243x includes a soft start circuit and a latch or fold-back protection circuit. A high-efficiency step-down DC/DC converter can be easily configured by using an inductor, resistors, a diode, and capacitors as external components. The R1243x provides a fast response and high efficiency due to current mode PWM control. Ceramic output capacitors can be used.
The Ricoh R1243x Series are 30V input, CMOS-based PWM step-down DC/DC converters featuring a 2A output current. The series includes a soft start circuit and a selectable latch or fold-back protection circuit. By using external components such as an inductor, resistors, a diode, and capacitors, a high-efficiency step-down DC/DC converter can be easily configured. Due to current mode PWM control, the R1243x provides a fast response and high efficiency, allowing the use of ceramic output capacitors.
| Input Voltage Range | 0V to 30.0V |
|---|---|
| Output Voltage Range | 8V to 18.0V |
| Supply Current | Typ. 0.7mA |
| Thermal Shutdown | 160°C |
| Feedback Voltage Accuracy | +/- 1.4% |
| Oscillator Frequency | 1MHz or 330kHz |
| Package Types | DFN(PLP)2527-10, HSOP-8E |
The converter can be configured using an inductor, resistors, a diode, and capacitors as external components.
Yes, ceramic output capacitors can be used with the R1243x series.
The series features a soft start circuit and a latch or fold-back protection circuit.