BU18JA2DG-CTR

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The BU18JA2DG-CTR is a fixed-output CMOS LDO regulator manufactured by Rohm Semiconductor, designed for automotive applications. It provides a fixed output voltage of 1.8V with a maximum output current of 200mA. The device features a typical ripple rejection ratio of 68dB at 1kHz and operates within an input voltage range of 1.7V to 6V. It includes shutdown functionality, overcurrent protection, and thermal shutdown. Qualified under AEC-Q100 standards, it supports an operating temperature range from -40°C to +125°C and is housed in a compact SSOP-5 package.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Integrated shutdown function allows precise control of the output state via the EN pin.
• Built-in overcurrent and thermal protection circuits safeguard against short circuits and overheating.
• High ripple rejection capability ensures stable power delivery in noisy environments.
• AEC-Q100 qualification confirms suitability for demanding automotive electronic systems.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Automotive camera modules
• Automotive radar systems
• Low-power automotive sensor interfaces

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'CTR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the fixed 1.8V output aligns with the target circuit design, as alternative voltage options exist within the same series. Ensure compatibility with the SSOP-5 footprint during PCB layout verification.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 1.8V rail is required for automotive-grade low-dropout regulation. The 200mA output capacity suits moderate load applications such as imaging sensors or communication interfaces. Consider the 68dB PSRR for noise-sensitive analog sections and verify that the SSOP-5 package dimensions fit the available board space constraints.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the BUxxJA2DG-C series of high-performance CMOS LDO regulators developed specifically for automotive use. The series shares common architectural features including low quiescent current and robust protection mechanisms. The JA2 designation indicates a 200mA output class within the broader family of automotive-grade linear regulators offered by Rohm Semiconductor.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Direct substitutes include other variants within the BUxxJA2DG-C series offering different fixed output voltages but identical pinouts and protection features. Cross-reference with BU10JA2DG-CTR or BU12JA2DG-CTR if voltage requirements differ while maintaining the same current and package specifications.