BU30JA3DG-CTR

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

The BU30JA3DG-CTR is a single-channel CMOS LDO regulator designed for automotive applications, manufactured by ROHM Semiconductor. It provides a fixed 3.0V output with a maximum current of 300mA. The device operates within an input voltage range of 1.7V to 6V and features a typical quiescent current of 37µA. Key electrical parameters include a dropout voltage of 0.22V at full load, ripple rejection of 60dB, and line/load regulation of 4mV/15mV. It supports an operating temperature range from -40°C to +125°C and is housed in an SSOP-5 package.

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

• Integrated shutdown function controlled by the EN pin for power management
• Built-in overcurrent protection circuit to prevent damage during output shorts
• Thermal shutdown mechanism protects against heat damage under overload conditions
• Compatible with low ESR ceramic capacitors for output phase compensation

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

• Automotive electronic systems requiring low standby current
• Power supply circuits for automotive sensors and modules
• Battery-powered automotive subsystems needing efficient voltage regulation

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

Verify the specific suffix 'CTR' indicates tape-and-reel packaging when ordering. Confirm that the component meets AEC-Q100 standards for automotive grade reliability. Ensure the selected variant aligns with functional safety support requirements (FS supportive) if used in safety-critical designs. Cross-reference the manufacturer part number with official datasheets to confirm pinout and thermal characteristics before integration.

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

Select this component for applications requiring a fixed 3.0V rail with minimal quiescent current consumption. The wide input voltage range accommodates varying battery states in automotive environments. Consider the SSOP-5 package size for space-constrained PCB layouts. Verify that the required output current does not exceed 300mA and that the system can tolerate the specified dropout voltage under minimum input conditions.

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

This part belongs to the BUxxJA3DG-C series of low-power linear regulators developed specifically for automotive use. The series offers various fixed output voltages while maintaining consistent performance characteristics such as high ripple rejection and robust protection features. These regulators are designed to support functional safety analysis and meet stringent automotive quality standards.

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

BU25JA3DG-CTR: Offers a 2.5V fixed output with identical 300mA current capability and similar package. BU30JA2DG-CTR: Provides a 2.0V output with reduced 200mA current rating but lower dropout voltage.