Market Overview

AKM Has Developed Ultra-Low Power Step-up DC-DC Converter in Sensing Technology


Realized: Practical Implementation of Microbial Fuel Cell (MFC)

Kasei Microdevices Corporation
(AKM) has developed a
step-up DC-DC converter
that works only consuming 3μW of power. The
AP4470 helps provide long term, multipoint and a low-cost sensing
network. This accelerates large-scale Internet of Things (IoT)

This press release features multimedia. View the full release here:

Infinite Energy Harvesting Resources for Ultra-low power DC-DC converter from AKM (Graphic: Business ...

Infinite Energy Harvesting Resources for Ultra-low power DC-DC converter from AKM (Graphic: Business Wire)

is the technology that derives small amounts of energy
directly from the environment and converts it into electric power.
Efficient power management is a key component for energy harvesting. One
of the biggest issues is that consumption from the power management
function is greater than the energy supply from the environment.
Therefore, there are so many energy sources that have never been used in
our environment.


1. 0.2V input self-startup without transformer
The AP4470
requires only 0.2V input to start boosting without the need for an
external transformer. This helps minimize energy harvesting materials
size and simplify the structure. The AP4470 enables new ways to provide
power to drive sensors, displays and wireless modules.

2. Embedded Power Supply and Protection Functions
The AP4470
has 2 switches that control the power supply for target devices,
(sensors, wireless modules, LEDs), and protect external storage,
(capacitors), and the target. This provides a self-powered wireless
sensor node, display system with simple hardware design.
The AP4470
converts DC inputs up to 3.55V and monitors external storage. When the
external storage's voltage reaches 3.3V, the AP4470 automatically starts
suppling to target devices. If the voltage drops down to 2.6V, the
AK4470 stops suppling voltage and current via on-chip switch function.

3. Power Indicators
2-types of power indicators offer a
reset function and trigger switch with zero standby current. The AP4470
has a pin that outputs a signal when the boosting circuit becomes
active. The AP4470 has another pin which outputs a signal when the
AP4470 starts supplying, which means external storage's voltage reaches

About AKM

Asahi Kasei Microdevices Corporation (AKM) is a Japan-based company,
designs and manufactures CMOS mixed signal integrated circuits and
magnetic sensors for applications including audio, multimedia, consumer
electronics, industrial infrastructure, and telecommunications. AKM has
continued to provide customers with optimum solutions all over the world
for over 30 years. AKM Semiconductor, Inc., located in San Jose,
California, is a wholly owned subsidiary of AKM, and offers sales,
marketing, and design support for North American customers. Additional
information is available at
AKM is trademark of Asahi Kasei Microdevices Corporation in Japan,
Europe and the United States.
* Appellations, company names and
product names on this page are trademarks or registered trademarks of
respective companies.

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