S-19243D18A-E8T1U

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

The S-19243D18A-E8T1U is a positive, fixed-output linear low-dropout (LDO) voltage regulator from the ABLIC S-19243 series. It provides a fixed output voltage of 1.8V with a maximum output current of 500mA. The device supports an input voltage range up to 10V and operates within a temperature range of -40°C to +105°C. Key electrical characteristics include a typical quiescent current of 150µA and a power supply rejection ratio (PSRR) of 60dB at 1kHz. It features integrated enable control, soft-start functionality, and protection against overcurrent, overtemperature, and short circuits. The component is AEC-Q100 qualified for automotive applications and is housed in an 8-HSOPA surface-mount package.

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

• Integrated enable pin and soft-start function for controlled power sequencing
• Built-in protection mechanisms including overcurrent, thermal shutdown, and short-circuit protection
• High power supply rejection ratio (PSRR) for effective noise filtering
• Automotive-grade reliability certified under AEC-Q100 standards

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

• Power management in automotive electronic systems
• Voltage regulation for microcontrollers and sensors in industrial equipment
• Battery-powered devices requiring efficient linear regulation
• Noise-sensitive analog circuit power supplies

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

Verify the specific suffix E8T1U corresponds to the 8-HSOPA tape-and-reel packaging configuration. Confirm that the fixed 1.8V output variant matches the design requirement, as other output voltages exist within the same series. Ensure compatibility with the target operating temperature range of -40°C to +105°C. Cross-reference the AEC-Q100 qualification status if the application mandates strict automotive compliance. Validate the pinout against the official datasheet for the HSOPA package to prevent assembly errors.

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

Select this component when a stable 1.8V rail is required with moderate current demands up to 500mA. It is suitable for designs prioritizing low noise and high PSRR over ultra-low quiescent current. Consider the 10V maximum input voltage limit when designing for higher input sources. The inclusion of enable and soft-start features makes it ideal for systems requiring precise power-up sequences. Evaluate thermal dissipation requirements based on the input-output voltage differential and load current.

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

This part belongs to the S-19243 series of LDO regulators, which are designed for automotive and general industrial applications. The series offers various fixed and adjustable output voltages with consistent performance characteristics. The S-19243D18A-E8T1U specifically denotes the 1.8V fixed output version in the HSOPA package. This series is characterized by its robust protection features and automotive certification, distinguishing it from standard commercial-grade regulators.

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

Direct substitutes may include other parts from the S-19243 series with different output voltages if the voltage level can be adjusted via external resistors, though fixed variants like S-19243DxxA-E8T1U are not interchangeable without design changes. Verify pin-to-pin compatibility with other 8-HSOPA LDOs if cross-brand replacement is necessary.