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Ricoh Insights - Overview

Ricoh launches ultralow 0.2 µA current consumption LDO regulator in miniaturised packaging

Amstelveen, the Netherlands, 08 March 2017 - Ricoh Europe (Netherlands) B.V. Semiconductor Support Centre today launched the RP118, a 100mA, ultra-low consumption LDO (low-dropout) regulator in smallest possible packages for the IoT market and portable devices. Benefiting in particular from a current consumption of just 0.2µA at no-load and a standby current of 000.2µA are those applications that are mainly in sleep mode and resume for a periodical brief moment to perform a task. The ultra-low current consumption of the RP118 extends the battery lifetime of wireless devices with RF transmitters (BLE, Zigbee, WiSun, Ant), low power CPUs, sensors and energy harvesting circuits.

The RP118 is a special kind of LDO offering three operating modes:

  • Low power consumption mode
  • Fast transient response mode
  • Off mode

The device switches automatically between the low power consumption mode and the fast transient response mode, based on the output current demand of the application. The off mode can be achieved by controlling the Chip Enable pin. The performance of the LDO is enhanced in fast transient response mode. In particular, the ripple rejection as well as the response speed to line and load transients demonstrate better results than a conventional low current consumption LDO (refer to the datasheet for specific details). This means the RP118 contributes to optimised output voltage stability and ripple reduction.

The RP118 features an embedded fold back current limit circuit. When a short circuit occurs, this circuit contributes to the decrease of the output current to the level of 50mA, thus protecting the LDO and other electronic parts from possible damage. Optional is an auto-discharge function that enables a fast discharge of the output capacitor when the LDO switches off.

The RP118 is available in three package options, including standard SOT23-5, small DFN (PLP)1010-4 and ultra-small 0.64 mm x 0.64 mm WLCSP-4-P8 package, which minimizes PCB area.

RP118 Features:
Input Voltage:
1.7V to 5.5V
Output Voltage:
1.2V to 3.6V
Output Voltage Accuracy:
Dropout Voltage:
(Iout=100mA, 2.8V type) Typ. 0.1V
Output Current:
Min. 100mA
Supply Current:
(Iout=0mA) Typ. 0.2µA
Standby Current:
Typ. 0.002µA
Protection Circuits:
Fold Back Current Limit
Short Circuit Current Limit:
Typ. 50mA
Output Capacitor:
Ceramic, Min 0.1µF
(L2.9 x W2.8 x H1.1mm) SOT23-5
(L1.0 x W1.0 x H0.6mm) DFN(PLP)1010-4
(L0.64 x W0.64 x H0.36mm) WLCSP-4-P8

| About Ricoh |
Ricoh is a global technology company that has been transforming the way people work for more than 80 years. Under its corporate tagline – imagine. change. – Ricoh continues to empower companies and individuals with services and technologies that inspire innovation, enhance sustainability and boost business growth. These include document management systems, IT services, production print solutions, visual communications systems, digital cameras, and industrial systems.

Headquartered in Tokyo, Ricoh Group operates in approximately 200 countries and regions. In the financial year ending March 2016, Ricoh Group had worldwide sales of 2,209 billion yen (approx. 19.6 billion USD).

In March 2001 Ricoh Europe (Netherlands) B.V. established the Semiconductor Support Centre to support European distributors and electronics designers and manufacturers with their applications or other enquiries about Power Management and Real Time Clock ICs.

For further information, please visit www.e-devices.ricoh.co.jp/en/ or contact:
Ricoh Europe (Netherlands) B.V.
Semiconductor Support Centre
Hans Adams, Manager
Tel: +31 (0) 20 5474 309
E-mail: semicon@ricoh-europe.com

| About Ricoh |

Ricoh is empowering digital workplaces using innovative technologies and services that enable individuals to work smarter from anywhere.

With cultivated knowledge and organizational capabilities nurtured over its 85-year history, Ricoh is a leading provider of digital services, information management, and print and imaging solutions designed to support digital transformation and optimize business performance.

Headquartered in Tokyo, Ricoh Group has major operations throughout the world and its products and services now reach customers in approximately 200 countries and regions. In the financial year ended March 2022, Ricoh Group had worldwide sales of 1,758 billion yen (approx. 14.5 billion USD).

For further information, please visit www.ricoh-europe.com

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For further information, please contact: 
Ricoh Europe PLC
Jack Gibson
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