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Ricoh Electronic Devices Co., Ltd. Launches Buck DC/DC Converters Featuring Ultra-low Output Voltage and Ultra-low Quiescent Current for IoT Devices

April 18, 2019
Ricoh Electronic Devices Co., Ltd.

Ricoh Electronic Devices Co., Ltd. launched RP516 and RP517 series, buck (step-down) DC/DC converters featuring ultra-low output voltage (0.3 V to 1.2 V) and ultra-low quiescent current (typically 0.3 µA). The new converters are designed for IoT systems.

As the IoT market expands, IoT devices with sensors, MCUs, communication ICs, etc. are required to correspond to low voltage to prolong the operating time of the battery. The RP516/RP517 achieve a low output voltage range of 0.3 V to 1.2 V configurable in 0.1 V step, an input voltage range of 1.8 V to 5.5 V, and ultra-low quiescent current of 0.3 µA.

The new RP516/RP517 will facilitate customers to construct IoT devices with low operating voltage and long operating time. Output currents of RP516/RP517 are 100 mA and 300 mA respectively*1.

The new ICs adopt WLCSP-8-P1, enabling high-density mounting. Additionally, we are developing DFN(PLP)2527-10 (Samples in July 2019) and SOT-89-5 (Samples in September 2019) versions in order to meet various requirements.

*1: The output current refers to reference value under certain conditions. Actual output current depends on surrounding conditions and components.

RP516
RP516 Series (WLCSP-8-P1)

Product Features of RP516/ RP517

The RP516/RP517 are DC/DC converters achieving ultra-low output voltage and ultra-low quiescent current, suitable for IoT devices.

1. Ultra-low Output Voltage Range

The output voltage range is configurable from 0.3 V to 1.2 V in 0.1 step.

2. Ultra-low Quiescent Current

The ultra-low quiescent current of typically 0.3 µA prolongs the operating time of IoT devices.

3. Wide Input Voltage Range

The wide input voltage range of 1.8 V to 5.5 V enables the RP516/RP517 to correspond to various batteries such as coin-shaped batteries, next-generation rechargeable batteries, capacitors, etc. In addition, the input voltage as low as 1.8 V prolongs the operating time of the battery.

4. Small Packages and Space-saving Mounting

The new ICs adopt WLCSP-8-P1 (1.45×1.48×0.4(max) mm). The small package will contribute to reducing the mounting area. Also, DFN(PLP)2527-10 (2.50×2.70×0.6(max) mm) and SOT-89-5 versions are under development. The new ICs will become available in various applications.

Product Specifications

Product Name RP516 series / RP517 series
Supply Current Typ. 0.3 µA (At No Load)
Input Voltage Range (VIN) 1.8 V to 5.5 V (Rating: 6.5 V)
Output Voltage Range (VOUT) 0.3 V to 1.2 V
Auto-discharge Yes/No User-selectable
Output Current*2 RP516 series: 100 mA
RP517 series: 300 mA
Standby Current Typ. 0.01 µA

*2: The output current refers to reference value under certain conditions. Actual output current depends on surrounding conditions and components.

Efficiency vs Output Current of RP516 (VOUT=0.5V,Ta=25°C)

Efficiency vs Output Current of RP516

Efficiency vs Output Current of RP517 (VOUT=0.5V,Ta=25°C)

Efficiency vs Output Current of RP517

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Supporting your IoT system construction

Ultra-low supply current

Achieves a long service life of battery with a nano-order low supply current

We provides IoT systems with semiconductor devices that feature low supply current, low noise, and small size by the highest level of CMOS analog technology, and thereby strengthens your competitive edge.