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2017/12/6

NISD（Ricoh）launches ultra-low quiescent current DCDC converters, and low noise and low supply current LDO regulator for wearables and IoT devices.

Ricoh Electronic Devices Co., Ltd. launched buck DCDC converters RP511/RP512 and a buck-boost DCDC converter RP604 with ultra-low quiescent current, and an LDO regulator RP122 with low noise and low supply current.

As IoT market expands, the strong market demands such as long-time battery driving, low noise, and miniaturization are increasing for IoT terminals. Our newly released products enable to meet the demands for IoT terminals with sensors, microcomputers, and communication ICs.

 

RP511 Series / RP512 Series

WLCSP-8-P1, DFN(PLP)2527-10, SOT-89-5
WLCSP-8-P1, DFN(PLP)2527-10, SOT-89-5

The RP511/RP512 is a buck DCDC converter operates at the minimum input voltage of 2.0 V and achieves 300 nA quiescent current at no load and 10 nA ultra-low standby current. These features greatly contribute to the long-time battery driving.

 

Key Features and Specifications

RP511 Series

 

0.3 µA IQ Low Quiescent Current 100 mA Buck DCDC Converter with Synchronous Rectifier

RP512 Series

 

0.3 µA IQ Low Quiescent Current 300 mA Buck DCDC Converter with Synchronous Rectifier

RP604 Series

WLCSP-8-P1, DFN(PLP)2527-10, SOT-89-5
WLCSP-8-P1, DFN(PLP)2527-10, SOT-89-5

The RP604 is a buck-boost DCDC converter operates at the minimum input voltage of 1.8 V and enables a continuous battery use with the boost operation even if the battery voltage drops below the use voltage. The flatted output voltage prevents malfunction of system devices by facilitating system designs and supporting a rapid power voltage drop.
The RP604 also achieves 300 nA quiescent current at no load and 10 nA ultra-low standby current contributing to the long-time battery driving.

 

Key Features and Specifications

RP604

 

0.3 µA IQ Low Quiescent Current 300 mA Buck-Boost DCDC Converter with Synchronous Rectifier

RP122 Series

DFN(PLP)1010-4, WLCSP-4-P8
DFN(PLP)1010-4, WLCSP-4-P8

The RP122 is an LDO regulator with low noise and low supply current. While having the low supply current of 9.5 µA, this device achieves 8 µVrms output noise when the output current is 250 mA and 90 dB (f = 1 kHz) ripple rejection when the output current is 20 mA without a noise bypass capacitor.

 

Key Features and Specifications

RP122

 

Low Noise and Low Supply Current 400 mA Voltage Regulator (LDO Regulator)
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