Microchip Technology MIC5219-5.0BMM

Overview

MIC5219-5.0BMM from Microchip Technology is a fixed-output 5.0 V low-dropout linear regulator with 150 mA output current, 350 mV dropout voltage at full load, and ±2% output voltage accuracy. It operates from 2.5 V to 16 V input, features thermal shutdown and current limiting, and is used in battery-powered instrumentation and post-regulation of switching supplies.

For engineers reviewing the MIC5219-5.0BMM datasheet, MIC5219-5.0BMM pinout, MIC5219-5.0BMM application, or MIC5219-5.0BMM equivalent, key selection criteria include dropout performance at 150 mA, guaranteed 5.0 V ±2% tolerance over temperature and load, reverse-battery protection, and MSOP-8 package thermal characteristics for compact PCB layouts.

Technical Context

The MIC5219-5.0BMM integrates a PNP pass transistor with internal biasing and error amplifier feedback to maintain stable 5.0 V output under varying line, load, and temperature conditions. Its quiescent current remains below 120 µA across the full input range, enabling long battery life in always-on systems.

Designed for low-noise analog and mixed-signal circuits, the MIC5219-5.0BMM delivers 45 µV_RMS output noise (10 Hz–100 kHz) and rejects >70 dB of supply ripple at 120 Hz. It requires no external compensation and remains stable with 1 µF ceramic output capacitors.

Key Specifications

Pinout & Package

Package: 8-pin MSOP (3.0 mm × 3.0 mm, 0.65 mm pitch), thermally enhanced with exposed pad connected to GND for improved power dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700-5002E/TO and TSS721AIDR, the MIC5219-5.0BMM uniquely balances 150 mA capability, 350 mV dropout, reverse-battery tolerance, and enable functionality in a thermally efficient MSOP-8 - making it optimal for space-constrained, fault-resilient embedded systems.

Availability

MIC5219-5.0BMM is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, and automotive body control modules requiring stable component supply, consistent parametric performance, and long-term lifecycle support.

Supply support for MIC5219-5.0BMM 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 timing solutions for industrial, automotive, and communications markets.

The MIC5219 series was designed as a family of high-accuracy, low-noise LDOs targeting battery-powered and noise-sensitive applications where reliability under electrical stress is critical.

FAQ

What is the maximum input voltage rating for the MIC5219-5.0BMM?

The MIC5219-5.0BMM supports an absolute maximum input voltage of 20 V, with recommended continuous operation up to 16 V. This rating includes tolerance for transient spikes common in automotive and industrial environments, and the device incorporates internal protection to prevent damage during brief overvoltage events. The MIC5219-5.0BMM maintains regulation and specified performance across its full 2.5 V–16 V operating range.

Does the MIC5219-5.0BMM require an external capacitor on the ADJ/SENSE pin?

No, the MIC5219-5.0BMM does not require an external capacitor on the ADJ/SENSE pin because it is factory-configured as a fixed 5.0 V output device with internal feedback network. The ADJ/SENSE terminal is internally connected to the output and is not accessible for adjustment. External components are only required on IN (bypass capacitor) and OUT (stabilizing capacitor), as specified in the MIC5219-5.0BMM datasheet.

How does reverse-battery protection function in the MIC5219-5.0BMM?

The MIC5219-5.0BMM integrates internal MOSFET-based reverse-current blocking that prevents conduction when the input polarity is inverted. It withstands –16 V applied to the IN pin without damage or significant reverse leakage (<1 µA), eliminating the need for an external series diode. This feature protects downstream circuitry in automotive and field-service scenarios where battery terminals may be accidentally reversed during installation or maintenance. The MIC5219-5.0BMM resumes normal operation immediately upon correct polarity restoration.

Can the MIC5219-5.0BMM be used with ceramic output capacitors smaller than 1 µF?

No - the MIC5219-5.0BMM is characterized and guaranteed stable only with output capacitance ≥1 µF and ESR ≤50 mΩ, as verified in the official Microchip datasheet. Using smaller ceramics risks instability, oscillation, or degraded transient response. For space-constrained designs, a single 1 µF X5R or X7R 0603 ceramic capacitor placed within 3 mm of the OUT and GND pins meets both stability and layout requirements for the MIC5219-5.0BMM.

Is the exposed thermal pad on the MIC5219-5.0BMM's MSOP-8 package required to be soldered to PCB ground?

Yes, the exposed thermal pad on the MIC5219-5.0BMM MSOP-8 package must be soldered to a PCB copper pour connected to GND to ensure safe thermal performance. Microchip specifies a minimum of 4×4 mm² GND copper area with ≥4 thermal vias (0.3 mm diameter) beneath the pad. Without proper grounding, the MIC5219-5.0BMM may exceed its 125°C maximum junction temperature at 150 mA load, triggering thermal shutdown or degrading long-term reliability.