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Ricoh launches RP155Z, a 200 mA LDO Regulator with a Pin-Selectable Dual-Voltage Level Output

Amstelveen, the Netherlands, March 11, 2016 – Ricoh Europe (Netherlands) B.V. Semiconductor Support Centre has launched a new voltage regulator, the RP155Z,  with a special pin-selectable dual-voltage level output set within a range of 1.6V and 3.6V.

The capability to shift voltage levels between one of the two preset output voltage levels makes it ideal for battery-powered applications with SD memory and SIM cards as well as devices requiring a Normal Operating and Power Saving Mode. 

The RP155Z has a high ripple rejection, fast transient response and low supply current required by devices such as smartphones, printers and cameras. An auto-discharge function discharges the output capacitor once the LDO is disabled. The RP155Z comes with a static output voltage accuracy of ±1.0% and has a temperature drift coefficient of ±30 ppm/°C. 

A number of protection circuits are included: a short-current limiting, thermal shutdown and inrush current limiting circuit.  Short-current protection (fold-back type) decreases the output current in case of a short circuit to approximately 50mA, protecting the LDO and other electronic parts of the application from damage. Thermal shutdown circuit prevents the LDO from exceeding a specific operating temperature. Inrush current limiting circuit makes sure the output voltage increases gradually and prevents high inrush current peaks and overshoots of the output voltage. 

To ensure stable operation a small ceramic capacitor with low ESR and a minimum value of 1.0µF can be used. 

The RP155Z is available in a 5-pin WLCSP-5-P1 package for applications that require a small footprint solution when board space is limited.

RP155 Features:

Input Voltage:1.9V to 5.25V
Supply Current:Typ. 80µA
Standby Current:Typ. 0.1µA
Dropout Voltage:Typ. 0.085V at 200mA
Ripple Rejection:Typ. 75dB, f = 1kHz 
Typ. 70dB, f = 10kHz
Output Voltage Range:1.6V to 3.6V
Output Voltage Accuracy:±1.0%
Output Voltage Temperature Coefficient:Typ. ±30 ppm/°C
Line Regulation:Typ. 0.02%/V
Short-current Limiting:Typ. 50mA
Overcurrent Protection:Fold Back Type
Thermal Shutdown:Typ. 165°C
Inrush Current Limiting:Typ. 160mA during 180µs after start-up
Ceramic Capacitor Compatible:1.0µF or more
Package:WLCSP-5-P1 (1.346 x 0.98 x 0.625mm)
Datasheet: http://www.e-devices.ricoh.co.jp/en/products/power/vr_ldo/rp155/

| 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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