Microchip Technology MIC5317-1.0YMT-TZ

Overview

MIC5317-1.0YMT-TZ from Microchip Technology is a high-performance 150 mA low-dropout (LDO) regulator in a 1 mm × 1 mm UDFN-4 package, delivering a fixed 1.0 V output with ±2% accuracy over –40°C to +125°C. It operates from 2.5 V to 6.0 V input, achieves 155 mV dropout at full load, and maintains stability with only 1 μF ceramic output capacitance-ideal for space-constrained USB dongles and battery-powered digital cameras.

For engineers reviewing the MIC5317-1.0YMT-TZ datasheet, MIC5317-1.0YMT-TZ pinout, MIC5317-1.0YMT-TZ application, or MIC5317-1.0YMT-TZ equivalent, this page delivers verified electrical specs, thermal behavior, enable-controlled shutdown, PSRR performance up to 80 dB, and real-world layout guidance for compact PCB integration.

Technical Context

The MIC5317-1.0YMT-TZ implements a CMOS-based LDO architecture with active-high enable control, internal current limiting (200–550 mA), and thermal shutdown protection. Its ultra-low quiescent current (29 μA typical) and zero-off-mode capability (<0.05 μA shutdown current) support always-on keep-alive circuits without compromising battery life.

Designed for high PSRR (80 dB @ ≤1 kHz, 65 dB @ 1–10 kHz) and fast transient response, it uses a single-stage error amplifier and optimized internal compensation-enabling stable operation with minimal external components while rejecting noise from noisy 5 V AC adapters or shared USB power rails.

Key Specifications

Pinout & Package

Package: 4-lead 1 mm × 1 mm UDFN (MT), RoHS-compliant, with exposed thermal pad (ePAD) requiring connection to GND for optimal thermal performance (θJA = 240°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with MIC5317-1.0YMT-TZ, MCP1700T-1002E/TT offers lower cost but sacrifices enable control and thermal safety; TPS7A0510PDBVR provides higher current and lower IQ but occupies >2.5× more PCB area-making MIC5317-1.0YMT-TZ optimal for space-constrained 150 mA applications demanding full protection and minimal footprint.

Availability

MIC5317-1.0YMT-TZ is available at Aetrix Electronics and suitable for USB dongles, digital still cameras, battery-powered medical sensors, and other applications requiring stable component supply with tight voltage tolerance and ultra-small packaging.

Supply support for MIC5317-1.0YMT-TZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology is a global provider of microcontrollers, analog devices, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with integrated silicon and development tools.

The MIC5317 product line delivers high-PSRR, low-IQ LDOs in miniature packages for space-constrained portable electronics where clean, efficient, and reliable low-voltage regulation is critical.

FAQ

What is the maximum input voltage rating for MIC5317-1.0YMT-TZ?

The absolute maximum input voltage (VIN) for MIC5317-1.0YMT-TZ is +7 V, but the recommended operating range is +2.5 V to +6.0 V. Exceeding 6.0 V may trigger internal protection or reduce reliability-always maintain VIN within the specified operating range for long-term performance and thermal safety in the 1 mm × 1 mm UDFN package.

Does MIC5317-1.0YMT-TZ require an external capacitor on the EN pin?

No, MIC5317-1.0YMT-TZ does not require an external capacitor on the EN pin. The enable input is CMOS-compatible with low leakage (<1 μA), and its internal structure ensures clean turn-on/turn-off without filtering. However, a pull-up resistor to VIN is recommended if the driving source is open-drain or high-impedance to prevent floating states that could cause indeterminate output behavior in the MIC5317-1.0YMT-TZ.

Can MIC5317-1.0YMT-TZ be used to power RF transmitter circuits?

No, MIC5317-1.0YMT-TZ is explicitly stated as unsuitable for RF transmitter systems per Microchip's DS20006195B documentation. While its 80 dB PSRR supports RF receiver biasing, the regulator's architecture and noise characteristics do not meet the stringent spectral purity requirements of RF power amplifiers or synthesizers-use dedicated RF LDOs or switching regulators with RF-grade filtering for transmitter stages.

What is the thermal resistance (θJA) of the MIC5317-1.0YMT-TZ package?

The MIC5317-1.0YMT-TZ uses the 4-lead 1 mm × 1 mm UDFN (MT) package with a junction-to-ambient thermal resistance (θJA) of 240°C/W under standard JEDEC test conditions. Actual θJA depends on PCB layout-connecting the ePAD to a solid GND plane with ≥4 thermal vias can improve thermal performance by up to 30%, directly impacting maximum ambient temperature limits for 150 mA operation in the MIC5317-1.0YMT-TZ.

Is MIC5317-1.0YMT-TZ compatible with 1.8 V GPIO enable signals?

Yes, MIC5317-1.0YMT-TZ is fully compatible with 1.8 V GPIO enable signals. Its EN pin has a logic-high threshold of ≥1.2 V and logic-low threshold of ≤0.2 V, placing 1.8 V well within the valid high-input range. With input current <1 μA, it imposes negligible loading on the GPIO-enabling direct connection without level shifters or resistive dividers in systems using 1.8 V or 3.3 V microcontrollers to control the MIC5317-1.0YMT-TZ.