MIC5399-SSYMX-T5 Microchip Integrated Circuit (Other) In Stock
The MIC5399-SSYMX-T5 is a dual 300 mA fixed-output LDO regulator with a 160 mV typical dropout voltage and a 2.8 V to 5.5 V input range. Both channels operate independently with a maximum 380 mV dropout at full load in a compact X2DFN-8 package. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- MIC5399-SSYMX-T5 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MIC5399-SSYMX-T5?
- Dual independent 300 mA LDO channels with a typical 160 mV dropout voltage for minimal power dissipation
- 2.8 V to 5.5 V input range covers single-cell Li-ion through 5 V USB supplies
- Ultra-compact X2DFN-8 package with only 380 mV maximum dropout, ideal for space-constrained multi-rail designs
What is MIC5399-SSYMX-T5 used for?
The MIC5399-SSYMX-T5 is well suited for dual-rail IoT modules and wireless SoC designs that require separate, independently switchable 1.8 V and 3.3 V supply rails from a single Li-ion battery. Its low 160 mV typical dropout extends usable battery runtime by keeping regulation active closer to the battery's end-of-discharge voltage. It also simplifies power tree design on compact Bluetooth and Wi-Fi modules where board area is limited to a few square millimeters.
What are the specifications of MIC5399-SSYMX-T5?
| Manufacturer Package Code | X2DFN-8 |
| Reach Compliance Code | Compliant |
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.38V |
| Dropout Voltage1-Nom | 0.16V |
| Dropout Voltage2-Max | 0.38V |
| Input Voltage Absolute-Max | 6V |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.8V |
| JESD-30 Code | R-PDSO-N8 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.0135% |
| Load Regulation-Max | 0.04% |
| Number of Functions | 1 |
| Number of Outputs | 2 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.3A |
| Output Current2-Max | 0.3A |
| Output Voltage1-Max | 3.399V |
| Output Voltage1-Min | 3.201V |
| Output Voltage1-Nom | 3.3V |
| Output Voltage2-Max | 3.399V |
| Output Voltage2-Min | 3.201V |
| Output Voltage2-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC8,.05,16 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Regulator Type | FIXED POSITIVE MULTIPLE OUTPUT LDO REGULATOR |
| Surface Mount | NO |
| Technology | CMOS |
| Terminal Finish | MATTE TIN |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.4mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 3% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Where can I find the MIC5399-SSYMX-T5 datasheet?
MIC5399-SSYMX-T5 Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MIC5399-SSYMX-T5?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the dropout voltage of MIC5399-SSYMX-T5 and how does it affect battery runtime in a Li-ion application?
The MIC5399-SSYMX-T5 has a typical dropout voltage of 160 mV and a maximum of 380 mV at 300 mA. For a 3.3 V output from a Li-ion battery, regulation is maintained down to approximately 3.46 V typical battery voltage, allowing roughly 15% more discharge capacity compared to a conventional LDO with a 500 mV dropout, which meaningfully extends runtime in wearables and IoT sensors.
Can both channels of MIC5399-SSYMX-T5 operate simultaneously at full 300 mA load?
Yes. Both LDO channels are fully independent and each rated for 300 mA continuous output current, so the device can supply a combined 600 mA from a single input rail within the 2.8 V to 5.5 V range. Thermal design should account for the total power dissipation of both channels running simultaneously, since the X2DFN-8 package has a limited thermal pad area for heat spreading.
Which dual-rail SoC designs benefit most from the MIC5399-SSYMX-T5 versus two separate single LDOs?
Designs such as Bluetooth Low Energy modules and Wi-Fi chipsets that require both a 1.8 V core rail and a 3.3 V I/O rail up to 300 mA each benefit from using MIC5399-SSYMX-T5 because it replaces 2 separate SOT-23 LDOs with a single X2DFN-8 footprint, saving at least 4 mm² of board area and reducing BOM line items by one part. The matched dropout specification across both channels also simplifies power sequencing analysis.
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