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R1800 Series
144 nA Low Quiescent Current Buck DC/DC Converter for Energy Harvester

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Description

R1800 is a power-storing buck DC/DC converter for a photovoltaic and vibration energy harvester. 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.

Key Benefits

  • Providing a low operating quiescent current (IQ 144nA) and a high efficiency (approximately 90%@10 µA).
  • A Control function that enables a maximum power optimizes a power supply from an energy harvester.

Spec

Standard
Input Voltage Range 2.0 V to 5.5 V (6.5 V)
Operating Temperature Range -40°C to 85°C (125°C)
Operating Quiescent Current Typ.144 nA (Ta = 25°C, at no load)
Output Voltage Range 2.0 V to 4.5 V (0.1 V step)
Output Voltage Accuracy ±3% (Ta = 25°C)
Package DFN(PL)2730-12
Starting Power 720 nW
Accuracy of Maximum Power Voltage 200 mV

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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

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

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
VIN
min (V)		 2.0
VIN
max (V)		 5.5
VOUT
min (V)		 2.0
VOUT
max (V)		 4.5
ISS
(µA)		 0.144

Technical Documents

  • Typical Application

    Typical Application

    L: 22 µH, CIN : 10 µF, COUT : 47 µF

  • Efficiency vs. Output Current VSET = 3.3 V

    Efficiency vs. Output Current VSET = 3.3 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 & Packages

Product Name Compatibility Package Marking Reliability
R1800KxxxA-TR
  • gradeConsumer
  • plp
 DFN(PL)2730-12 R1800K R1800K
  • 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.

FAQ

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Buy / Contact

  • Purchase, Request for samples and documents
    Sales are made through distributors. Please contact your local distributors for any sales-related inquiry such as price.
  • Available from 1 piece!
    Our electronic device products are available through our authorized online distributors.
  • Technical Support
R1800 Series