MIC5317-1.5YM5-TR

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

The MIC5317-1.5YM5-TR is a high-performance single 150 mA low dropout regulator manufactured by Microchip Technology. It provides a fixed 1.5V output voltage with an operating input range of 2.5V to 6.0V. The device features a typical quiescent current of 29 μA and offers 70 dB power supply rejection ratio (PSRR). It incorporates thermal-shutdown and current-limit protection functions. The component is housed in a 5-lead SOT-23 package and supports an operating junction temperature range from -40°C to +125°C.

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

• Ultra-small footprint available in lead-free packages including 1 mm x 1 mm UDFN, SOT23-5, and TSOT23-5.
• Capable of maintaining stability when used with standard 1 μF ceramic output capacitors.
• Features an active-high enable pin that allows the regulator to enter a zero off-mode current state when disabled.
• Includes built-in linear current limiting and thermal shutdown protection for fault condition safety.

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

• USB Dongles
• Wireless LANs
• Battery-Powered Equipment
• Digital Still and Video Cameras

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

Verify the specific ordering suffix 'YM5' corresponds to the 5-Lead SOT-23 package configuration required for your design. Confirm the 'TR' media type indicates the tape and reel packaging format intended for automated assembly processes. Ensure the fixed 1.5V output voltage aligns with the target load requirements before finalizing procurement specifications.

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

Select this component when space constraints necessitate a small surface-mount package like SOT-23-5 while requiring 150 mA output capability. It is suitable for applications demanding low ground current consumption and high PSRR. Verify that the input voltage remains within the 2.5V to 6.0V range and that the load does not exceed the continuous current rating under maximum ambient temperature conditions.

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

This part belongs to the MIC5317 family of high-performance LDO regulators designed for stringent space and performance requirements. The series offers various fixed output voltages ranging from 1.0V to 3.6V. Different package options allow designers to choose between the ultra-small 1 mm² UDFN or the more common SOT-23/TSOT-23 form factors depending on board layout needs.

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

Direct substitutes include other MIC5317 variants with different output voltages or packages, such as MIC5317-1.8YM5-TR or MIC5317-1.5YMT-TR. Cross-family replacements require verification of pin compatibility, current ratings, and electrical characteristics against the original datasheet specifications.

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

Is the MIC5317 suitable for RF transmitter systems?

No, the datasheet explicitly states that the MIC5317 is not suitable for RF transmitter systems.

What is the minimum output capacitor value required for stability?

The MIC5317 requires an output capacitor of 1 μF or greater to maintain stability, optimized for use with low-ESR ceramic chip capacitors.

How does the enable pin function affect power consumption?

Forcing the enable pin low disables the regulator and sends it into a 'zero' off-mode current state where current consumption goes nearly to zero.