EZ1117ACST33TRT

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

The Semtech EZ1117ACST33TRT is an adjustable positive low-dropout (LDO) voltage regulator housed in a SOT-223-3 surface-mount package. It delivers an output current of 800 mA with a maximum dropout voltage of 1.2 V. The device supports an input voltage range from 2.65 V to 7 V and provides an adjustable output voltage between 1.3 V and 5.7 V. Key electrical characteristics include a typical power supply rejection ratio (PSRR) of 72 dB, a line regulation of 0.035%, and a load regulation of 0.2%. The internal reference voltage is 1.25 V with a tolerance of 2%.

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

• Provides stable regulated power for sensitive electronic circuits through low-noise linear regulation.
• Maintains consistent output performance under varying load conditions with minimal voltage deviation.
• Operates efficiently with reduced heat generation due to low dropout voltage characteristics.

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

• Portable battery-powered equipment requiring efficient voltage conversion
• Embedded systems needing stable logic supply rails
• Communication modules requiring clean power for signal integrity

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

Verify the specific suffix 'CST33' against official Semtech documentation to confirm the fixed 3.3V configuration versus the standard adjustable variant. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary by region. Ensure the ordering part number matches the exact package and tape-and-reel specifications required for your assembly process.

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

Select this component when a compact SOT-223 footprint is required for 800 mA applications. It is suitable for designs where input voltages are close to the desired output level, leveraging its low dropout capability. Consider the thermal dissipation capabilities of the PCB layout, as power loss depends on the difference between input and output voltages multiplied by the load current.

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

This device belongs to the EZ1117 series of positive voltage regulators manufactured by Semtech. The series includes variants with different packages such as D2PAK and SOT-223, offering both fixed and adjustable output options. The EZ1117 family is designed for general-purpose power management tasks in consumer and industrial electronics.

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

Publicly confirmed substitute part numbers for this specific variant are not available in the provided source data. Cross-reference with other LDOs offering similar 800 mA current and SOT-223 packaging only after verifying pin compatibility and electrical parameters against official datasheets.