R1810 Series
600 nA Low Quiescent Current Boost DC/DC Converter for Energy Harvester

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  • Description

    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.

    Key Benefits

    • 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.

  • Spec
    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

    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
    • 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

    • Related Links

      • Prime Designer

        Online Design Tool

        Registration to myNISD is required to use some of the functions, such as simulations.

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  • Quality &
    • Refer to the datasheets for the details on the product.
    • The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.

Download Datasheet

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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