Home > Power Management ICs (PMIC) > Low Dropout Regulators (LDO) > MIC5209-3.3YSTR

MIC5209-3.3YSTR

500mA LDO, Vout=3.3V fixed, 2.5-16V in, low-noise, SOT-223-3, -40~125°C

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Manufacturer Part：

MIC5209-3.3YSTR

Package：

SOT-223-3

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Description

Product Overview

The MIC5209-3.3YSTR is a 500mA low-noise LDO voltage regulator from Microchip with a fixed 3.3V output. It features ultra-low dropout voltage (10mV at light loads), 1% output accuracy, and enable/shutdown control in a SOT-223-3 surface-mount package.

Key Specifications

Output Type Fixed 3.3V
Maximum Output Current 500mA
Input Voltage Range 2.5V to 16V
Dropout Voltage 350mV typical @ 500mA
Output Accuracy ±1%
Quiescent Current 80µA typical
Ultra-Low Noise Yes (with bypass capacitor)
Enable/Shutdown Yes (near-zero off current)
Reverse Battery Protection Yes
Package SOT-223-3
Operating Temperature -40°C to +125°C

Features

  • 1% output voltage accuracy
  • Ultra-low noise with external bypass capacitor
  • 10mV dropout at light loads
  • Reverse battery protection
  • Current and thermal limiting
  • Near-zero shutdown current
  • Meets Intel Slot 1/2 requirements

Applications

  • Battery-powered portable devices
  • RF and analog power supply
  • USB peripheral power
  • Post-regulation for switching supplies
  • Low-noise sensor supply

The MIC5209-3.3YSTR is a 500mA low-noise LDO voltage regulator from Microchip with a fixed 3.3V output and 1% accuracy. Designed for battery-powered and noise-sensitive applications, it features ultra-low dropout voltage (10mV at light loads, 350mV typical at full load) and ultra-low output noise when used with an external bypass capacitor. The wide 2.5V-16V input range supports diverse supply topologies. Reverse battery protection, current limiting, and thermal shutdown provide robust fault protection. The SOT-223-3 package offers excellent thermal dissipation in a compact footprint.

The MIC5209 uses a P-channel MOSFET pass element driven by an error amplifier that compares a fraction of the output voltage with an internal reference. The 1% bandgap reference ensures tight output accuracy. When a bypass capacitor is connected to the BYP pin, it filters reference noise to achieve ultra-low output noise. The EN pin enables or shuts down the regulator; in shutdown, quiescent current drops to near-zero. Reverse battery protection prevents damage when input polarity is reversed. Current limiting and thermal shutdown protect against overload conditions.

Pin Name Function
1 IN Input Supply (2.5-16V)
2 GND Ground (Tab)
3 OUT Regulated Output (3.3V)
  • Battery-powered portable device 3.3V rail
  • RF transceiver and analog front-end low-noise supply
  • USB peripheral 3.3V power regulation
  • Post-regulation after DC-DC converter for noise filtering
  • Precision sensor and ADC reference supply
Manufacturer Part Number Vout Notes
Microchip MIC5209-3.0YSTR 3.0V Same family, 3.0V output
TI TLV1117-33 3.3V 800mA LDO equivalent
Microchip MCP1824T-3302E/OT 3.3V 300mA, SOT-23-5
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Quality Assurance

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

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For static-sensitive, moisture-sensitive and precision components such as ICs, PCBs, sensors and connectors, we carry out reliability screening in advance. Combined with standardized ESD anti-static packaging and vacuum moisture-proof packaging, we avoid component damage caused by static electricity, dampness or collision during storage and transportation, and retain the original performance of products.

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If you have inquiries about our quality standards, inspection procedures or product certification documents, please feel free to contact us:

 

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Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

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5. Local Pickup in Shenzhen

Local pickup service is available for customers in Shenzhen and surrounding areas:
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  • Business Hours: 09:00 – 18:00, Monday to Friday. Closed on weekends and official public holidays.
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Contact Information

Email: info@ic-vendor.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

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Professional Packaging Standards

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We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@ic-vendor.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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