R1517x Series 500 mA 36V Input Low Supply Current LDO NO. EA304201125 OUTLINE R1517x is a CMOS-based LDO that specifically designed featuring 500 mA output current and 36 V input voltage. In addition to a conventional regulator circuit, R1517x consists of a constant slope circuit as a soft-start function, a fold-back protection circuit, a short current limit circuit, and a thermal shutdown circuit. Besides the low supply current by CMOS, the operating temperature is 40C to 105C and the maximum input voltage is 36 V, the R1517x is very suitable for power source of car accessories. R1517x supports the internal fixed output voltage type of R1517xxxxB/D/E/F, and the output voltage of R1517x001C can adjust the output voltage be set with an external resistor, and the setting range is from 2.5V to Max 20V. As for the soft-start time, R1517x is fixed internal in R1517xxxxB/C/D and is set to 120 s (Typ). And the soft-start time in R1517xxxxE/F is adjustable by external capacitors. R1517x supports the auto-discharge function at standby in R1517xxxxD/F. R1517x is available in two packages for ultra-high wattage: HSOP-6J and TO-252-5-P2. FEATURES Input Voltage Range (Maximum Rating) 3.5 V to 36.0 V (50.0V) Operating Temperature Range 40C to 105C Supply Current Typ. 18 A Standby Current Typ. 0.1 A Dropout Voltage Typ. 0.35 V (I = 500 mA, V = 5.0 V) OUT OUT Output Voltage Accuracy 0.8% (V 5.0 V) OUT Line Regulation Typ. 0.01%/V Packages HSOP-6J, TO-252-5-P2 Output Voltage Range R1517xxxxB/D/E/F: 2.5 V/3.3 V/3.4 V/5.0 V/ 8.5V R1517x001C: Adjustable from 2.5 V to 20.0 V with External Resistors. Feedback Voltage: 2.5 V Built-in Short Current Limit Circuit Typ. 75 mA Built-in Fold-Back Protection Circuit Min. 500 mA Built-in Thermal Shutdown Circuit Typ. 160C Built-in Soft-start Circuit Typ.120 s R1517xxxxE/F: Adjustable Time Setting with External Capacitors. Usable Ceramic Capacitors R1517xxxxB/D/E/F: 0.1 F or more R1517x001C: 1.0 F or more 1 R1517x NO. EA304201125 APPLICATIONS Power source for home appliances such as refrigerators, rice cookers, electric water warmers. Power source for notebook PCs, digital TVs, telephones, private LAN systems. Power source for office equipment such as copiers, printers, facsimiles, scanners, and projectors BLOCK DIAGRAMS R1517xxxxB R1517x001C V V V OUT V OUT DD DD Internal VR Internal VR V FB Soft Soft Start Start Vref Vref Current Limit Current Limit Thermal Shutdown Thermal Shutdown CE GND CE GND R1517xxxxE R1517xxxxD V OUT V DD V DD Internal VR Internal VR V OUT Soft Soft Start Start DELAY Vref Vref Current Limit Current Limit GND GND Thermal Shutdown Thermal Shutdown CE CE R1517xxxxF V DD V OUT Internal VR Soft Start DELAY Vref Current Limit Thermal Shutdown CE GND 2