EZ1117CM-1.8TRT

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

The EZ1117CM-1.8TRT is a fixed positive voltage regulator from the Semtech EZ1117C series, housed in a D2PAK (TO-263) package with three terminals. It provides a fixed output voltage of 1.8 V and supports a maximum output current of 0.8 A. The device features a maximum dropout voltage of 1.2 V at rated current, ensuring efficient regulation. Line regulation is specified at 0.035% max, while load regulation is 0.2% max. The reference voltage is 1.25 V with a tolerance of 2%. It operates within an input voltage range of 2.65 V to 7 V and has a typical PSRR of 72 dB. The junction temperature maximum is 125 °C.

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

• Fixed 1.8 V output voltage configuration for stable power supply applications
• Low dropout performance capability supporting operation with minimal input-output differential
• Integrated thermal shutdown and internal current limiting for enhanced device protection
• Fast transient response designed to maintain regulation under varying load conditions

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

• Portable battery-powered equipment requiring efficient voltage regulation
• Linear pre-regulator circuits for switching power supplies
• Post-regulators for noise reduction in power distribution networks
• General-purpose positive voltage regulation in embedded systems

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

Verify the specific suffix '1.8' confirms the fixed 1.8 V output variant, distinct from adjustable or other fixed voltage versions. Confirm the 'TRT' suffix indicates tape and reel packaging if bulk handling is required. Check current availability status as older revisions may be discontinued. Ensure the TO-263 package footprint matches the target PCB design. Validate that the 0.8 A current rating meets the application's peak load requirements without exceeding thermal limits.

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

Select this component when a fixed 1.8 V rail is needed with up to 800 mA capacity. Consider the 1.2 V max dropout voltage against the minimum available input voltage to ensure proper regulation. Evaluate thermal dissipation capabilities given the D2PAK package size and 125 °C junction limit. Compare line and load regulation specs against system sensitivity requirements. Verify compatibility with the 2.65 V to 7 V input voltage window for the specific power source.

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

The EZ1117CM-1.8TRT belongs to the EZ1117C family of low-dropout linear regulators manufactured by Semtech. This series is designed for high-performance applications requiring reliable positive voltage regulation. The part utilizes a surface-mount D2PAK package suitable for automated assembly. It integrates protection features such as current limiting and thermal shutdown, making it robust for industrial and consumer electronics environments where space and efficiency are critical constraints.

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

SC1117CM variants offer similar LDO characteristics but may differ in fixed voltage outputs or package details. SC1117CM.TR is an adjustable version requiring external resistors, unlike the fixed 1.8 V output of the EZ1117CM-1.8TRT. Direct substitution requires verifying pinout compatibility and electrical parameter alignment, particularly dropout voltage and current ratings. Always consult official datasheets for precise equivalence confirmation.