Nisshinbo R1801 Series Buck DC/DC Switching Regulator with Ultra-low Quiescent Current and Minimum Starting Power
July 29, 2020 - Nisshinbo Group has launched the R1801 series, an ultra-low quiescent current Buck DC/DC Switching Regulator optimal for energy harvesters.
As the IoT market expands, it is more and more important to harvest small energy from the ambient environment such as light, vibration, and temperature, and to convert it into electricity.
The R1801 is a power-storing buck DC/DC switching regulator focused on storing electricity with a photovoltaic element. It achieves an ultra-low quiescent current of typically 200nA at normal temperature, high efficiency of typically 80% at 10μA, and a minimum starting power of 1.00μW (VIN=4V, VOUT=3.0V).
The DC/DC switching regulator can perform a highly efficient extraction of electricity from a photovoltaic element thanks to a maximum power point control (MPPC) function and a reverse current protection function. The former function optimizes the efficiency of the power supply from a photovoltaic element, and the latter cut off the reverse-current path at no power supply to prevent power loss caused by reverse current.
The MPPC voltage and the output voltage are adjustable by pin setting, which is convenient when you determine the default voltage at the initial consideration or want to vary the MPPC voltage according to the actual environment.
Also, the R1801 has a power good (PG) function which monitors the output voltage. The PG signals enable grasping the power storage level and therefore make it easy to construct the power-supply sequence of the subsequent system.
The IC adopts DFN(PLP)2730-12, which enables high-density mounting.
R1801 Series (DFN(PLP)2730-12)
Typical Characteristics of the R1801 Series
Key Features of R1801 Series
1. Minimum Starting Power
The R1801 series achieves a minimum starting power of 1.00μW (VIN=4V, VOUT=3.0V). This enables storing electricity even under low-illuminance conditions.
2. Maximum Power Point Control (MPPC) Function
The MPPC function optimizes the power supply from harvesters.
The MPPC voltage and the output voltage are adjustable by pin setting, which is convenient when you determine the default voltage at the initial consideration or want to vary the MPPC voltage according to the actual environment.
3. Power Good (PG) function
The PG function monitors the output voltage and outputs PG signals. The PG signals enable grasping the power storage level and therefore make it easy to construct the power-supply sequence of the subsequent system.
This function operates only by the VOUT power supply, so it can operate even in no light.
4. Ultra-low Quiescent Current and High Efficiency
The R1801 achieves an ultra-low quiescent current of 200nA and high efficiency of 80% at 10μA simultaneously. This good balance allows using a photovoltaic panel with smaller cells.
5. Reverse Current Protection Function
The reverse current protection stops the current flowing from the COUT even at no power supply and therefore enables the system to fully use the electricity extracted from a harvester.
6. Small Package
The R1801 adopts DFN(PLP)2730-12 (3.0×2.7×0.60mm), which can reduce mounting area and make the system smaller.
About Nisshinbo
New Japan Radio Co., Ltd. and Ricoh Electronic Devices Co., Ltd. of the Nisshinbo Group were integrated and started operation as Nisshinbo Micro Devices Inc. in January 2022. Nisshinbo integrated the strengths of both companies and refine "Connect Everything" technology, and, therefore, strives for further growth and development as an "Analog Solution Provider toward the realization of an ultra-smart society.
- +1 Like
- Add to Favorites
Recommend
- Nisshinbo(Original RICOH) and NICHICON Develop a Wireless, Maintenance-Free IoT Access Point and Edge Device System
- Nisshinbo Launched RIOT-002 the Second Generation of the Environment Sensing Board, for Use in IoT Verification Experiments
- Nisshinbo Launched Development of First MUSES-Series High-sound-quality Power Management IC
- NISSHINBO‘s 600nA Low Quiescent Current Boost DC/DC Converter for Energy Harvester
- NISSHINBO Launched 0.5A/1A 6MHz PWM/VFM Step-down DC/DC Converter RP539 Series with Synchronous Rectifier
- Started Solution Business Using “Odor Sensing Platform“, Nisshinbo Signed Joint Development Agreement with Ainos and Taiwan Inabata Sangyo
- Now Available: Nisshinbo NL8802，a Low Noise, Dual, High-Quality Sound Audio Operational Amplifier
- Nisshinbo and KIT Have Started the Development of Radio Frequency Rectifier IC Focused on Microwave Wireless Power Transfer Systems
This document is provided by Sekorm Platform for VIP exclusive service. The copyright is owned by Sekorm. Without authorization, any medias, websites or individual are not allowed to reprint. When authorizing the reprint, the link of www.sekorm.com must be indicated.
Integrated Circuits
Discrete Components
Connectors & Structural Components
Assembly UnitModules & Accessories
Power Supplies & Power Modules
Electronic Materials
Instrumentation & Test Kit
Electrical Tools & Materials
Mechatronics
Processing & Customization
