Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Regulator Type | Fixed positive LDO |
| Output Voltage | 3.3 V |
| Peak Output Current | 500 mA |
| Output Accuracy | Better than 1% family specification |
| Control | Enable input |
| Package | SOT-23-5, tape and reel |
Product Overview
MIC5219-3.3YM5-TR is the fixed 3.3 V SOT-23-5 tape-and-reel version of Microchip’s MIC5219 low-dropout regulator. It combines a compact package, enable control and 500 mA peak-output capability for loads that need a clean 3.3 V rail with startup or transient current demand.
The 500 mA figure is a peak capability, not an automatic guarantee of continuous current in every board layout. Continuous operation is constrained by package dissipation, VIN-to-VOUT difference and ambient conditions.
Technical Specifications
| Group | Parameter | Value / Condition |
|---|---|---|
| Output | Nominal voltage | 3.3 V |
| Output | Peak current | 500 mA |
| Accuracy | Output voltage | Better than 1% family specification |
| Dropout | Full-load behavior | Less than 500 mV family specification |
| Control | Enable | CMOS/TTL compatible |
| Protection | Integrated | Current limiting, overtemperature and reversed-battery protection |
| Package | Type | SOT-23-5 |
Functional Highlights
Peak-current capability supports startup transients
The MIC5219 is designed for loads that can demand higher current during startup while sustainable current remains dependent on package and thermal conditions.
Enable control supports rail sequencing
The logic-compatible enable pin allows the 3.3 V rail to be switched without removing the upstream supply.
Applications / Application Fit
- Compact 3.3 V rails with controlled enable
- Battery-powered or portable electronics
- Loads with short startup or transient current demand
Design Considerations
Separate the 500 mA peak rating from thermally sustainable continuous current in SOT-23-5.
Follow the manufacturer capacitor guidance and low-noise recommendations where rail noise matters.
Verify reverse-battery, current-limit and thermal behavior against the actual source and load sequence.
Related Engineering Resources
- Microchip MIC5219 official product page — manufacturer-controlled product information and documentation.
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
Request a Quote
To request a quotation, provide the manufacturer part number, required quantity, destination, target Date Code if applicable, and any testing or inspection requirements.
