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R1810 Series

600 nA Low Quiescent Current Boost DC/DC Converter for Energy Harvester

  • Consumer
  • RoHS

R1810 Series is a boost DC/DC converter for electrical power storage devices, especially dedicated for 1 cell photovoltaic energy harvester since the start-up voltage is Typ. 0.35V.
This product can start up with only 9 µW, and applicable for charging 1 cell photovoltaic element. A system which is working under low-illuminance environment can be composed with the R1810 Series.

  • Providing a low quiescent current (IQ_VOUT = Typ. 600 nA), and high efficiency (66%@ IOUT = 5 µA)
  • Start up with low input energy, 9 µW (low illuminance) is possible.
  • Maximum power point control function is built-in.

Specs & Datasheets

Input Voltage Range 0.35 V to 2.1 V (2.3 V)
Operating Temperature Range -40°C to 85°C (85°C)
Operating Quiescent Current Typ. 600 nA (Ta = 25°C, at no load))
Output Voltage Range 2.3 V to 4.5 V
Output Voltage Accuracy ±5% (Ta = 25°C)
Package WLCSP-15-P1, DFN2735-14
Start-up power 9 µW
Maximum Power Point Control Voltage Setting 0.2 V to 2.1 V, in 50 mV increments

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

Typical Application

L = 22 µH, CIN = 22 µF, CCP = 22 nF, CREG = 4.7 µF, COUT = 4.7 µF

Efficiency vs. Output Current

Efficiency vs. Output Current

VIN = 0.5 V, VSET = 2.6 V

Demonstration Video

Introduction Video

Quality & Packages

Product Name Compatibility Package Marking Reliability
  • gradeConsumerC
WLCSP-15-P1 R1810Z R1810Z-F
  • gradeConsumerC
DFN2735-14 R1810L R1810L

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Please contact us or our distributors for unpublished reliability information.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

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