R1801 Series | Nisshinbo Micro Device

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Description

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.

Key Benefits

Providing a low power supply (I_Q 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.

Spec

	Standard
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(PL)2730-12
Starting Power	1 µW
Functions	Adjustable Maximum Power Point Control, Adjustable Output Voltage

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)	2.3
	VIN max (V)	5.5
	VOUT min (V)	2.3
	VOUT max (V)	4.5
	ISS (µA)	0.2

Technical Documents

Typical Application
Efficiency vs. Output Current
Related Links
Online Design Tool

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Min Input Voltage

[V]

Max Input Voltage

[V]

Output Voltage

[V]

Max Output Current

[A]

Buck

Boost

Buck-Boost

Inverting

Automotive

Quality & Packages

Product Name	Compatibility	Package	Marking	Reliability
R1801KxxxA-TR		DFN(PL)2730-12	R1801K	R1801K

Package

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.

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R1801 Series

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