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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)

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