R1510S Series

Automatic Mode Shift 36V 300mA LDO for Automotive Applications


Data Sheet

Data Sheet

The R1510S is a voltage regulator (LDO) IC with a voltage detector (VD) featuring 300mA output current that is developed with CMOS process technology. Each IC is equipped with a voltage detector and a regulator that can provide the maximum 36V of operating voltage. This device has ECO function, which achieves low-power consumption and high-speed transient response by switching the IC to low-power consumption mode at light load condition and switching to high-speed mode at heavy load condition.
The switching point is internally fixed inside the IC. The IC switches from low-power consumption mode to highspeed mode when IOUT=12mA (Typ.), and switch from high-speed mode to low-power consumption mode when IOUT=3mA (Typ.).
Each IC is composed of a reference voltage unit, an error amplifier, a resistor network for setting output voltage, an output current limit circuit for preventing overcurrent destruction, and a thermal shutdown circuit. The output voltage and the detector threshold are internally fixed inside the IC.
The output voltage accuracy is ±1.6% and the detector threshold accuracy is ±1.9%. The output voltage type is Nch open drain. The versions for the IC are selectable from A version (CE, VIN Detector), B version (SENSE Detector), C version (Release Delay Circuit, VIN Detector), and D version (Release Delay Circuit, VOUT Detector).


Input Voltage Range (Maximum Rating) Max. 36.0V (50V)
Operating Temperature Range -40°C to 105°C
Supply Current Typ. 110µA (High Speed Mode, VIN=14V)
Supply Current Typ. 12.5µA (Low-power Consumption Mode, VIN=14V)
Supply Current (Standby Mode) Typ. 10µA (CE=0V, A Version)
Output Voltage Range 2.5V to 12.0V (0.1V step)
Dropout Voltage Typ. 1.0V (IOUT=300mA, VOUT=5V)
Output Voltage Accuracy ±1.6% (Ta=25°C)
Temperature Characteristics Typ. ±150ppm/°C (Output Voltage)
Detector Threshold 2.3V to 12.0V (0.1V step)
Detector Threshold Accuracy ±1.9% (Ta=25°C)
Temperature Characteristics Typ. ±100ppm/°C (Detector Threshold)
Output Type Nch Open Drain
Line Regulation Typ. 0.01%/V
Package HSOP-8E
Built-in Short Current Limit Circuit Typ. 50mA
Built-in Overcurrent Protection Circuit  
Built-in Thermal Shutdown Circuit Shutdown Temperature: Typ. 140°C,
Release Temperature: Typ. 125°C
Ceramic Capacitor Corresponding 6.8µF or more


  • Power source for accessories such as car audios, car navigation systems, and ETC systems
  • Power source for ECUs such as EV inverter and battery charge control unit

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Data Sheet Package Quality Assurance Data Suffix Composition & Content*1
R1510S Series HSOP-8E Contact us*2 -JE Sn (Sn: 100%)
Reliability -AE
  • *1The composition of the product cannot be specified.
  • *2The reliability information is not listed for devices above rank2. Please contact Ricoh sales representatives for further informations.

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