R1518x Series AEC-Q100 Compliant 1 A 36V Input Low Supply Current LDO for Automotive Applications NO.EC-329-201125 OUTLINE R1518x is a CMOS-based LDO that specifically designed for automotive applications featuring 1 A output current and 36 V input voltage. In addition to a conventional regulator circuit, R1518x 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 125C and the maximum input voltage is 36 V, the R1518x is very suitable for power source of car accessories. R1518x is available in R1518xxxxB/D/E/F with the internally fixed output voltage, and R1518xxxxD/F with the auto-discharge function at standby. The output voltage of R1518x001C can be set with an external resistor, and the setting range is from 2.5V to Max 20V. R1518xxxxB/C/D internally fixes the soft-start time at 120 s (Typ). R1518Jxx1E/F can adjust the soft- start time with an external capacitor. R1518x 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 125C Supply Current Typ. 18 A Standby Current Typ. 0.1 A Dropout Voltage Typ. 0.7 V (I = 1 A, V = 5.0 V) OUT OUT Output Voltage Accuracy 0.8% (V 5.0 V) OUT Temperature-Drift Coefficient of Output Voltage Typ. 60 ppm/C (40C Ta 125C) Line Regulation Typ. 0.01%/V Packages HSOP-6J, TO-252-5-P2 Output Voltage Range R1518xxxxB/D/E/F: 2.5 V/2.8 V/3.0 V/3.3 V/3.4 V/5.0 V/ 6.0 V/8.0 V/8.5 V/9.0 V R1518x001C: Adjustable from 2.5 V to 20.0 V with external resistor Feedback Voltage: 2.5 V Built-in Short Current Limit Circuit Typ. 150 mA Built-in Fold-Back Protection Circuit Min. 1.1 A Built-in Thermal Shutdown Circuit Typ. 160C Built-in Soft-start Circuit R1518xxxxB/C/D: Typ.120 s R1518Jxx1E/F: Time adjustable Ceramic Capacitors can be used R1518xxxxB/D/E/F: 0.1 F or more R1518x001C: 1.0 F or more 1 R1518x NO.EC-329-201125 APPLICATIONS Power source for car accessories including car audio equipment, car navigation system, and ETC system. Power source for control units including EV inverter and charge control. BLOCK DIAGRAMS R1518xxxxB R1518x001C 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 R1518Jxx1E R1518xxxxD 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 R1518Jxx1F V DD V OUT Internal VR Soft Start DELAY Vref Current Limit Thermal Shutdown CE GND 2