Automatic Mode Shift 36V 300mA LDO for Automotive Applications
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|
|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
|Data Sheet||Package||Quality Assurance Data||Suffix||Composition & Content*1|
|HSOP-8E||Contact us*2||-JE||Sn (Sn: 100%)|
- *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.