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R1801 Series
Buck DC/DC Converter for Energy Harvester with Adjustable Maximum Power Point Control, Adjustable Output Voltage and PG Function
R1801 is a power-storing buck DC/DC converter for a photovoltaic and vibration energy harvester. The Power Good (PG) function can output PG signal according to the output voltage facilitating to build a system.
A low operating quiescent current allows a harvester to be used under a low-illumination environment, and it is suitable for an equipment with low power supplied from a harvester.
- Providing a low power supply (IQ 200 nA) and a high efficiency (approximately 80%@10 µA).
- Monitoring the output voltage to output Power Good (PG) signal.
- Adjustable the output voltage and maximum power point control voltage in 100 mV step by the setting pins.
Specs & Datasheets
| Consumer | |
|---|---|
| Input Voltage Range | 2.3 V to 5.5 V (6.5 V) |
| Operating Temperature Range | -40°C to 85°C (125°C) |
| Operating Quiescent Current | Typ. 200 nA (Ta = 25°C, at no load) |
| Output Voltage Range | 2.3 V to 4.5 V |
| Output Voltage Accuracy | ±3% (Ta = 25°C) |
| Package | DFN(PLP)2730-12 |
| Starting Power | 1 µW |
| Functions | Adjustable Maximum Power Point Control, Adjustable Output Voltage |
Protections / Functions
| TSD | ILX | OCP | OVP | UVLO | OVLO | Reverse | Shutdown | Soft Start | SSCG | PGOOD | Auto Discharge | Anti-ringing | Sequencing | Max Duty | Ext. Phase | LED Adjust |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |
|
Technical Documents
Typical Application
Efficiency vs. Output Current
Introduction Video
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| R1801KxxxA-TR |
|
DFN(PLP)2730-12 | R1801K | R1801K |
C
P
Refer to the datasheets for the details on the product.
The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Please contact us or our distributors for unpublished reliability information.
Sample / Buy
Buy Online
Buy, Request for Samples, Request for Information Materials
Authorized Distributors
Please contact your local distributors for any sales-related inquiry such as price, stock, delivery, etc.
Functional Description
| TSD | Thermal Shutdown Function |
|---|---|
| ILX | LX Current Limit Function |
| OCP | Overcurrent Protection |
| OVP | Overvoltage Protection |
| UVLO | Undervoltage Lockout Protection |
| OVLO | Overvoltage Lockout Protection |
| Reverse | Reverse Current Protection Circuit |
| Shutdown | Shutdown Function |
| Soft Start | Soft Start Function |
| SSCG | Spread Spectrum Clock Generator Function |
| PGOOD | Power Good Output |
| Auto Discharge | Auto Discharge Function |
| Anti-ringing | Anti-ringing Switch Function |
| Sequencing | Start-up Sequencing Control |
| Max Duty | Maximum Duty Cycle |
| Ext. Phase | Externally Adjustable Phase Compensation |
| LED Adjust | LED High-speed Dimming Control |