Microchip Technology MIC5211-3.3/5.0BM6TR

Overview

MIC5211-3.3/5.0BM6TR from Microchip Technology is a dual-output low-dropout linear regulator IC delivering fixed 3.3 V and 5.0 V outputs with ±2% output voltage accuracy, 150 mA per channel output current capability, and 350 mV typical dropout at full load. It operates from a 2.5 V to 16 V input supply and is used in dual-rail embedded microcontroller power systems requiring clean, independent voltage domains.

For engineers reviewing the MIC5211-3.3/5.0BM6TR datasheet, MIC5211-3.3/5.0BM6TR pinout, MIC5211-3.3/5.0BM6TR application, or MIC5211-3.3/5.0BM6TR equivalent, key selection factors include dual fixed-output configuration, thermal shutdown protection, and SOT-23-6 package compatibility with space-constrained PCB layouts.

Technical Context

The MIC5211-3.3/5.0BM6TR integrates two independent LDO regulators on a single die: one configured for 3.3 V output (VOUT1), the other for 5.0 V output (VOUT2), each with dedicated enable control (EN1, EN2) and ground return paths. Both channels feature internal current limiting and thermal foldback protection.

It uses PNP pass transistors for low dropout performance and does not require external compensation capacitors-only 1 µF ceramic output capacitors per channel are needed for stability across temperature and load variations.

Key Specifications

Pinout & Package

Package: SOT-23-6, surface-mount, thermally enhanced plastic package with exposed pad for improved heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A203350PDBVR and AP21392M8-3350, the MIC5211-3.3/5.0BM6TR provides independent 150 mA per-channel current capability, individual enable inputs, and minimal external component count-making it optimal for dynamically managed, space-constrained dual-rail designs.

Availability

MIC5211-3.3/5.0BM6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, medical handheld diagnostics, and automotive body control modules requiring stable component supply and long-term production continuity.

Supply support for MIC5211-3.3/5.0BM6TR 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs for industrial, automotive, and consumer applications.

The MIC5211 family delivers compact dual-output LDO solutions targeting space-constrained embedded systems needing independent, low-noise, and sequenced voltage rails.

FAQ

What are the output voltage options supported by the MIC5211-3.3/5.0BM6TR?

The MIC5211-3.3/5.0BM6TR provides two fixed, non-adjustable output voltages: 3.3 V and 5.0 V. These outputs are internally trimmed and specified at ±2% accuracy over temperature, line, and load. The part number suffix "-3.3/5.0" explicitly denotes this dual-output configuration-no external resistors or programming is required to set either voltage. Each output operates independently and maintains regulation within its specified current and input voltage range.

Does the MIC5211-3.3/5.0BM6TR require external capacitors for stability?

Yes, the MIC5211-3.3/5.0BM6TR requires a 1 µF ceramic capacitor on each output (VOUT1 and VOUT2) for stability across all operating conditions. No input or bypass capacitors are mandatory, though a 1 µF ceramic capacitor on VIN is recommended for high-frequency noise suppression. The device uses internal compensation, so no external compensation network is needed-this simplifies design and reduces bill-of-materials count compared to adjustable LDOs.

Can the two outputs of the MIC5211-3.3/5.0BM6TR be enabled independently?

Yes, the MIC5211-3.3/5.0BM6TR features two independent enable inputs: EN1 controls the 3.3 V output (VOUT1), and EN2 controls the 5.0 V output (VOUT2). Both are active-high logic inputs compatible with standard CMOS levels (VIH ≥2.0 V, VIL ≤0.8 V). This allows precise power sequencing-for example, enabling VOUT2 first to power peripherals before asserting EN1 to bring up the 3.3 V logic domain-critical in systems with strict startup timing requirements.

What is the maximum input voltage rating for the MIC5211-3.3/5.0BM6TR?

The MIC5211-3.3/5.0BM6TR supports an absolute maximum input voltage of 16 V, with guaranteed operation across 2.5 V to 16 V. This extended input range accommodates automotive battery systems (including load-dump transients), industrial 12 V rails, and wide-input DC-DC converter outputs. Operation below 2.5 V may result in dropout or loss of regulation on one or both outputs, depending on load and output voltage requirements.

Is thermal shutdown protection included in the MIC5211-3.3/5.0BM6TR?

Yes, the MIC5211-3.3/5.0BM6TR integrates thermal shutdown protection that disables both outputs when the junction temperature exceeds approximately 160 °C. Recovery occurs automatically once the die cools below the hysteresis threshold (~140 °C). This protection operates independently of output current limit and ensures safe operation under sustained overload, poor PCB thermal design, or ambient temperature extremes-enhancing reliability in unattended or sealed-system deployments.