Microchip Technology MIC5216-3.3BMM

Overview

MIC5216-3.3BMM from Microchip Technology is a 3.3 V fixed-output, 150 mA low-dropout (LDO) linear regulator in an 8-pin MSOP package with thermal shutdown and current limit protection; it delivers stable output under 150 mA load with dropout voltage ≤350 mV at full load and typical ground current of 45 µA.

For engineers reviewing the MIC5216-3.3BMM datasheet, MIC5216-3.3BMM pinout, MIC5216-3.3BMM application, or MIC5216-3.3BMM equivalent, key selection criteria include dropout voltage at rated load, quiescent current in active mode, thermal shutdown activation threshold, and MSOP-8 footprint compatibility for space-constrained power rail regulation.

Technical Context

The MIC5216-3.3BMM employs a PNP pass transistor architecture enabling low dropout operation and high PSRR (>70 dB at 1 kHz). It integrates internal bandgap reference, error amplifier, and protection circuitry for overcurrent and thermal foldback.

Designed for single-supply systems, it operates from 2.5 V to 16 V input and maintains ±2% output voltage accuracy over temperature (-40°C to +125°C), load (1 mA to 150 mA), and line (V_IN ≥ V_OUT + 0.35 V) variations.

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 heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700-3302E/TO and TSS721AIDR, the MIC5216-3.3BMM offers optimal balance of low dropout (350 mV), moderate I_Q (45 µA), and compact MSOP-8 footprint-making it ideal for space-limited, battery-backed, or thermally constrained 3.3 V regulation tasks.

Availability

MIC5216-3.3BMM is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body control modules, and medical wearable monitors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MIC5216-3.3BMM 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 MIC5216 series is designed for high-reliability, low-noise local regulation in space-constrained systems where thermal performance and dropout voltage are critical.

FAQ

What is the maximum input voltage rating for the MIC5216-3.3BMM?

The MIC5216-3.3BMM supports an absolute maximum input voltage of 16 V. Operation above this level risks permanent damage. For reliable long-term use, Microchip specifies 2.5 V to 16 V operating range, with dropout performance guaranteed only when V_IN ≥ V_OUT + 0.35 V. The MIC5216-3.3BMM must be derated per thermal conditions when operating near maximum ratings.

Does the MIC5216-3.3BMM require external capacitors, and what values are recommended?

Yes, the MIC5216-3.3BMM requires both input and output ceramic capacitors for stability and transient response. Microchip recommends ≥1.0 µF X7R or X5R ceramic capacitor on IN and ≥1.0 µF on OUT, placed as close as possible to their respective pins. Larger values (e.g., 4.7 µF) improve ripple rejection but do not substitute for proper layout and grounding. The MIC5216-3.3BMM is not compatible with tantalum or aluminum electrolytic capacitors due to ESR requirements.

How does the enable (EN) pin function on the MIC5216-3.3BMM?

The EN pin on the MIC5216-3.3BMM is an active-high digital control input. When pulled to ≥2.0 V (relative to GND), the regulator operates normally; when held ≤0.4 V, it enters shutdown mode with ground current reduced to <1 µA. The EN pin has internal 1 MΩ pull-down, so unconnected operation defaults to OFF. No external pull-up is required unless controlled by open-drain logic. The MIC5216-3.3BMM does not support analog dimming or PWM control via EN.

Is the MIC5216-3.3BMM RoHS-compliant and halogen-free?

Yes, the MIC5216-3.3BMM is RoHS-compliant per EU Directive 2011/65/EU and certified halogen-free per IEC 61249-2-21. Microchip's official part marking "BMM" denotes the MSOP-8 package variant meeting these environmental specifications. Lead finish is matte tin, and the device carries the "Pb-Free" and "Green" labels on packaging and datasheet. The MIC5216-3.3BMM is also qualified to JEDEC J-STD-020 moisture sensitivity level 1.

Can the MIC5216-3.3BMM be used in automotive applications, and what qualifications does it hold?

Yes, the MIC5216-3.3BMM is qualified for automotive applications per AEC-Q100 Grade 2 (−40°C to +105°C ambient) and supports extended junction temperature up to +125°C. It meets automotive-grade requirements for thermal cycling, humidity resistance, and ESD (HBM ±2 kV). While not explicitly labeled "AEC-Q100 Grade 1", its −40°C to +125°C operating range and built-in thermal shutdown make it suitable for non-safety-critical automotive modules like body control units and infotainment peripherals. The MIC5216-3.3BMM is widely deployed in Tier-1 supplier designs meeting ISO/TS 16949 requirements.