BD9xxN5-C Series Nano Cap™ LDOs for 45 V Automotive Applications

ROHM Semiconductor BD9xxN5-C series Nano Cap linear regulators are designed as low-current-consumption products for power supplies in various automotive applications that require a direct connection to the battery. These products feature an absolute maximum voltage of 45 V, an output current of 500 mA, low current consumption of 25 µA (typ), and high accuracy of ±2.0%. An output capacitor of 470 nF (typ) or more can be used for this product series, and it can realize a brilliant transient characteristic even with small capacitance. These LDOs provide 3.3 V and 5.0 V output voltages, and an adjustable range of 1.0 V to 18 V can be achieved by using an external resistive divider connected to the ADJ pin.

An output shutdown function is integrated in the devices. A logical "HIGH" at the EN pin turns on the device, and it is disabled by a logical "LOW" input to the EN pin. The BD9xxN5-C series features integrated overcurrent protection (OCP) to protect the device from damage caused by short-circuiting or an overload. These products also integrate thermal shutdown (TSD) protection to avoid damage by overheating and undervoltage lockout (UVLO) to avoid false operation at low input voltages. Furthermore, low-ESR ceramic capacitors are sufficiently applicable for phase compensation.