BA17818CP-E2

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

The BA17818CP-E2 is a linear voltage regulator from the BA178 series manufactured by ROHM Semiconductor. It provides a fixed positive output of 18 V with a maximum output current of 1 A. The device operates within an input voltage range of 21 V to 33 V and supports a power dissipation of 22 W. It features line regulation of 10 mV, load regulation of 30 mV, and a typical PSRR of 61 dB. The component is housed in a TO-220CP-3 package for through-hole mounting and functions reliably across an operating temperature range of -40 °C to +85 °C.

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

• Integrated overcurrent protection circuit prevents damage during short-circuit or overload conditions.
• Built-in thermal shut-down circuit protects the device from overheating.
• Provides good ripple rejection characteristics for stable power delivery.

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

• General-purpose electronic equipment requiring regulated DC power
• Industrial control systems utilizing standard voltage rails
• Consumer electronics designs compatible with TO-220 packages

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

Verify the specific suffix E2 against the manufacturer's latest documentation to confirm compliance status and availability. Confirm that the TO-220CP-3 package matches the target PCB footprint requirements. Ensure the 1 A current rating and 22 W power dissipation capabilities align with the thermal management design of the final application.

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

Select this component when a fixed 18 V output at 1 A is required in a through-hole configuration. Compare the 61 dB PSRR and 30 mV load regulation against system noise sensitivity requirements. Evaluate the thermal performance based on the 22 W dissipation limit and the ambient operating temperature range of -40 °C to +85 °C.

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

This part belongs to the BA178 series of linear regulators, which are designed as direct replacements for traditional 78xx series devices. The series offers various fixed output voltages and current ratings, including 500 mA variants like the BA178M18CP-E2. The BA17818CP-E2 specifically targets applications needing higher current capacity than the M-series counterparts while maintaining standard regulatory features.

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

The BA178M18CP-E2 serves as a lower-current alternative within the same family, providing 0.5 A output instead of 1 A. Designers must verify that the reduced current capability of the substitute meets the load requirements before implementation.