MIC5317-1.2YMT-TZ

Product Overview

The MIC5317-1.2YMT-TZ from Microchip Technology is a single-output linear voltage regulator for fixed positive-rail applications. It supplies a 1.2 V output at up to 150 mA from input voltages up to 6 V, with a maximum dropout of 0.38 V at 150 mA. The device is housed in a 4-UDFN exposed-pad package, 4-DFN (1x1), for surface-mount assembly, and it operates from -40°C to 125°C. It includes an enable control and over-current and over-temperature protection, with a quiescent current of 39 µA.

Key Features

• Fixed 1.2 V positive output from a single regulator channel.
• 150 mA rated output current with 0.38 V maximum dropout at 150 mA.
• Maximum input voltage of 6 V.
• Enable control feature.
• Over-current and over-temperature protection.
• 39 µA quiescent current.
• PSRR of 80 dB to 65 dB from 1 kHz to 10 kHz.
• Operating temperature range of -40°C to 125°C.
• 4-UDFN exposed-pad package, 4-DFN (1x1), surface-mount.

Applications

• Generating a fixed 1.2 V rail for low-current loads in compact electronic assemblies.
• Providing controlled enable/disable operation for a 1.2 V output rail in power-managed circuits.
• Regulating a positive supply where input voltages are up to 6 V and a low-dropout characteristic is useful.
• Supporting electronic circuitry where power-supply ripple rejection is beneficial.

Design & Procurement Notes

When selecting this regulator, verify that the input voltage does not exceed 6 V and that the input-to-output differential provides at least 0.38 V at the rated 150 mA load to remain within the specified dropout condition. The enable control can be used to manage the output state, but the output is fixed at 1.2 V and is not adjustable. The 4-UDFN exposed-pad package supports surface-mount assembly and should be considered in PCB layout for thermal dissipation, especially near the upper end of the -40°C to 125°C operating range. Over-current and over-temperature protection are specified, but external design margins for thermal conditions should still be evaluated.