Skip to main content Skip to first level navigation
Skip to main content First level navigation Menu
Contact Us About Us
Facebook (Open link in new window) YouTube (Open link in new window) LinkedIn (Open link in new window) E-mail Newsletter
Main content
Main content

R1801 Series

Buck DC/DC Converter for Energy Harvester with Adjustable Maximum Power Point Control, Adjustable Output Voltage and PG Function

  • Consumer
  • PLP
  • RoHS

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

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

Download Datasheet

Protections / Functions

Functional Description

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

Efficiency vs. Output Current

Introduction Video

Quality & Packages

Product Name Compatibility Package Marking Reliability
  • gradeConsumerC
  • plpP
DFN(PLP)2730-12 R1801K R1801K

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Please contact us or our distributors for unpublished reliability information.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

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

Search for similar products under conditions below.

Category:DC/DC Switching Regulators

Topology Buck
min (V)
max (V)
min (V)
max (V)