Microchip Technology MIC5375-2.8YMT-TZ

Overview

MIC5375-2.8YMT-TZ from Microchip Technology is a fixed-output, 2.8 V, 150 mA low-dropout linear regulator in a 4-lead 1 mm × 1 mm Thin DFN package, featuring 120 mV dropout at full load, ±2% initial output accuracy, and integrated output discharge circuitry. It operates across 2.5 V to 5.5 V input range and delivers stable regulation for battery-powered portable electronics requiring compact, low-quiescent-current power management.

For engineers reviewing the MIC5375-2.8YMT-TZ datasheet, MIC5375-2.8YMT-TZ pinout, MIC5375-2.8YMT-TZ application, or MIC5375-2.8YMT-TZ equivalent, key selection criteria include dropout voltage at 150 mA, auto-discharge functionality during shutdown, thermal performance in ultra-small TDFN, and compatibility with 1 µF ceramic output capacitors - all critical for space-constrained, low-power mobile designs.

Technical Context

The MIC5375-2.8YMT-TZ implements a CMOS-based LDO architecture with internal reference, error amplifier, and pass transistor, optimized for fast line/load transient response and no-load stability. Its enable pin controls an active-high logic interface that places the device into a sub-1 µA shutdown state while activating an internal NFET discharge path (30 Ω typical) across VOUT–GND when disabled.

This regulator supports operation from –40°C to +125°C junction temperature and is thermally protected via internal shutdown at ~150°C. Its design targets minimal external component count: only 1 µF input and 1 µF output ceramic capacitors are required for stability with ≥2.5 V outputs, eliminating need for bulk or high-ESR support capacitors.

Key Specifications

Pinout & Package

Package: 4-Lead 1 mm × 1 mm Thin DFN (TDFN-4, MT suffix), RoHS-compliant, with exposed thermal pad internally connected to GND.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-output LDO applications.

Compared with MCP1700-2802E/TO and XC6206P282MR-G, MIC5375-2.8YMT-TZ uniquely combines 120 mV dropout, integrated auto-discharge, and 1 mm × 1 mm footprint - making it optimal for space-constrained, multi-rail portable systems requiring rapid, safe power sequencing.

Availability

MIC5375-2.8YMT-TZ is available at Aetrix Electronics and suitable for mobile phones, digital cameras, GPS receivers, and handheld medical monitors requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for MIC5375-2.8YMT-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 semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with ISO/TS-16949 certified manufacturing and design facilities.

The MIC5375 series belongs to Microchip's high-performance LDO family designed specifically for ultra-compact, battery-powered portable electronics demanding low dropout, low noise, and intelligent power sequencing capabilities.

FAQ

What is the maximum input voltage rating for MIC5375-2.8YMT-TZ?

The absolute maximum input voltage for MIC5375-2.8YMT-TZ is +6 V, but its specified operating range is 2.5 V to 5.5 V. Exceeding 5.5 V may cause permanent damage or violate reliability specifications. For robust design, maintain VIN ≤ 5.5 V under all conditions including ripple and transients, especially when used with USB or boost converter outputs.

Does MIC5375-2.8YMT-TZ require an external resistor divider for output voltage setting?

No, MIC5375-2.8YMT-TZ does not require an external resistor divider because it is a fixed-output LDO delivering 2.8 V. Unlike the adjustable MIC5377/MIC5378 variants, this part integrates the feedback network internally. The "2.8" in the part number explicitly denotes the factory-trimmed 2.8 V output, eliminating external components and calibration steps.

How does the auto-discharge feature function in MIC5375-2.8YMT-TZ?

When the EN pin of MIC5375-2.8YMT-TZ is driven low, the device enters shutdown and activates an internal 30 Ω NFET between VOUT and GND. This discharges the output capacitor rapidly - typically within tens of microseconds - ensuring no residual voltage remains on VOUT. This prevents back-powering of upstream circuitry and supports safe, deterministic power-down sequencing in multi-rail systems.

Can MIC5375-2.8YMT-TZ operate stably with only a 1 µF output capacitor?

Yes, MIC5375-2.8YMT-TZ is fully stable with a single 1 µF ceramic capacitor (X5R/X7R dielectric) on the output, as confirmed in the datasheet for VOUT ≥ 2.5 V. This eliminates need for larger or higher-ESR capacitors. Using Y5V or Z5U dielectrics is discouraged due to severe capacitance loss over temperature, which may compromise stability.

What is the thermal resistance (θ_JA) of the MIC5375-2.8YMT-TZ package?

The MIC5375-2.8YMT-TZ uses a 4-lead 1 mm × 1 mm Thin DFN (MT) package with a junction-to-ambient thermal resistance (θ_JA) of 250°C/W under standard JEDEC test conditions. Actual thermal performance depends on PCB copper area, layer count, and via placement - adding thermal vias under the exposed pad significantly improves heat dissipation and allows sustained 150 mA operation at higher ambient temperatures.