RP171N Series AEC-Q100 Compliant 150 mA 10 V LDO Regulator for Automotive Applications NO. EC-245-200219 OUTLINE The RP171x is a LDO regulator featuring 150 mA output current. The RP171x offers the maximum input voltage of 10 V which makes it ideal for the use in car audio equipment, car navigation system and ETC system. The RP171x provides a supply current as low as Typ. 23 A and achieves fast-response characteristics. The RP171x offers an output voltage as low as 1.2 V. Compared to existing high-speed lines, the RP171x provides excellent output voltage accuracy and output voltage temperature coefficient Internally, the RP171x consists of a fold-back protection circuit and a thermal shutdown circuit. A standby mode with ultra low supply current has been realized by a chip enable function. The RP171x is available in a 5-pin SOT-23-5 package with high power dissipation. FEATURES Input Voltage Range (Absolute Maximum Ratings) 2.6 V to 10 V (12 V) Operating Temperature 40C to 105C Supply Current Typ. 23 A (V = V +1.0 V) IN SET Standby Current Typ. 0.1A (V = 10.0 V, CE = L) IN Output Voltage Range 1.2 V/1.5 V/1.8 V/2.5 V/2.8 V/3.0 V/3.3 V/3.4 V/5.0 V/6.0 V * Contact Ricoh sales representatives for other voltages. Output Voltage Accuracy 1.0% Output Voltage Temperature Coefficient Typ. 80 ppm/C Line Regulation Typ. 0.02%/V Dropout Voltage Typ. 0.4 V (I = 150 mA, V = 2.8 V) OUT SET Ripple Rejection Typ. 70 dB (f = 1 kHz) Fold-back Protection Circuit Typ. 40 mA Constant Slope Circuit (Soft-start Function) Thermal Shutdown Circuit Stops at 165C Auto-discharge Function RP171xxxxD Package SOT-23-5 Ceramic Capacitor Compatible 1.0 F or more APPLICATIONS Power supply for car audio equipment, car navigation system, ETC system, etc. Power supply for electronic control units such as EV inverter and battery charge control unit. 1 RP171N NO. EC-245-200219 SELECTION GUIDE (1) The set output voltage, the auto-discharge function and the automotive class are user-selectable options. Package Quantity per Reel Pb Free Halogen Free Product Name RP171Nxx1-TR- E SOT-23-5 3,000 pcs Yes Yes xx: Specify the set output voltage (VSET) within the range of 1.2 V / 1.5 V / 1.8 V / 2.5 V / 2.8 V / 3.0 V / 3.3 V / 3.4 V / 5.0 V / 6.0 V * Contact Ricoh sales representatives for other voltages. : Select from (B) CE = Active-high without auto-discharge function or (D) CE = Active-high with Auto- discharge function. : Select the quality class. Operating Test Temperature Temperature Range A 40C to 105C 25C, High J 40C to 105C Low, 25C, High BLOCK DIAGRAM V V DD V OUT V DD OUT Vref Vref Current Limit Current Limit Thermal Shutdown Thermal Shutdown CE GND CE GND RP171xxxxB Block Diagram RP171xxxxD Block Diagram (1) Auto-discharge function quickly lowers the output voltage to 0 V by releasing the electrical charge accumulated in the external capacitor when the chip enable signal is switched from the active mode to the standby mode. 2