Step-up DC/DC Converter
Step-up DC/DC Converters Lineup (General use)
The products highlighted in pink rows are major products that are shown in the "DC/DC Converters Lineup in order of Input Voltage and Function".
For technical terms on the list, please refer to "Application Note".
For technical terms on the list, please refer to "Application Note".
| Product Name | Ver. | Control | Input Voltage Range | Output Voltage Range | Voltage Accuracy *1 |
Frequency | Output Tr. |
Lx Current Limit*2 | Soft Start |
Protection Circuit | Features, Remarks | Package | Data Sheet (PDF) |
Design Guide (PDF) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RN5RK | xx1x | VFM | 0.75V to 8.0V | 2.0V to 5.5V | ±2.5% | MAX. 100kHz |
Internal | — | — | — | SOT-23-5 |  |
- | |
| xx2A | 0.7V to 8.0V | External | ||||||||||||
| R1210N | xx1x | PWM | 0.9V to 8.0V | 2.2V to 6.0V | ±2.5% | 100kHz (A/C) 180kHz (D) |
Internal | — | Δ*3 | — | (xx1A) With frequency change-over circuit. (Output voltage range: 2.2V to 3.5V) (R1210Nxx2A doesn't exist.) |
SOT-23-5 | |
- |
| R1210N | xx2x | 0.8V to 8.0V | External | |
- | |||||||||
| R1213K | 001A | PWM | 2.3V to 5.5V | Ext. adjustable between 3.0V to 6.0V |
±8mV | 1MHz | Internal | 2.5A |  (Ext. adjustable) |
Latch type | Ext. phase compensation. Input to output path disconnected by external P-channel MOSFET controlled by FLAG pin. Built-in under-voltage lockout circuit. (UVLO) |
DFN(PLP)2730-12 | |
|
| 001B | Ext. adjustable between 6.0V to 15.0V |
|||||||||||||
| RP400x | xx1A | PWM/VFM Auto Switching |
0.7V to 5.5V | 1.8V to 5.0V or Ext. adjustable between 1.8V to 5.0V (only DFN) |
±2% | 700kHz | Internal | 600mA *4 | |
— | Built-in Anti-ringing switch. | DFN(PLP)1820-6 SOT-23-5 |
|
|
| RP400x | xx1B | |
||||||||||||
| RP400x | xx1C | 1.2V to 5.5V | |
|||||||||||
| RP401x | xx1A | PWM, PWM/VFM Auto Switching |
0.6V to 5.5V | 1.8V to 5.5V | ±2% | 1.2MHz | Internal | 1A*4 | |
Latch type | Selectable PWM or PWM/VFM auto switching mode by MODE pin. | DFN(PLP)1820-6 | |
|
| xx1B | － | |||||||||||||
| xx1C | PWM/VFM Auto Switching |
1.8V to 5.5V or Ext. adjustable between 1.8V to 5.5V (only DFN) |
－ | DFN(PLP)1820-6 SOT-23-5 |
||||||||||
| xx1D | PWM | － | ||||||||||||
| Product Name | Ver. | Control | Input Voltage Range | Output Voltage Range | Voltage Accuracy *1 |
Frequency | Output Tr. |
Lx Current Limit*2 | Soft Start |
Protection Circuit | Features, Remarks | Package | Data Sheet (PDF) |
Design Guide (PDF) |
- *1When the output voltage is adjusted by external resistors, the value means the feedback voltage accuracy.
- *2Lx current limit is different from output current.
- *3A function used to detect sudden peaks in output voltage and to reduce overshoot/undershoot.
- *4Will change according to the duty cycle.
- *All PDF files are less than 1MB unless otherwise stated.
- *If you don't have Adobe Reader, you can download free.
Support/ Technical Information
- Technical Support
Contact Us
- Buy Products / Order Sample
Ricoh semiconductor products are available at those dealers.
Technical Info.
-
Technical Information on Ricoh Power Management ICs.
Product Catalog
-
Selection guide is available for download in PDF format.
