MIC5317-1.8YM5 Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
The MIC5317-1.8YM5 from Microchip is a 1.8 V fixed-output low-dropout linear voltage regulator delivering up to 150 mA output current in a compact SOT-23-5 package. With a 0.38 V maximum dropout voltage and 2.5 V to 6 V input range, it suits portable battery-powered digital systems.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MIC5317-1.8YM5 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 1.8 V output LDO regulator with 150 mA output current capability in a tiny SOT-23-5 footprint
- Ultra-low 0.38 V maximum dropout voltage enabling operation from 2.5 V input rails common in Li-ion battery systems
- -40°C to 125°C junction temperature range supporting both consumer and industrial deployment environments
Applications
The MIC5317-1.8YM5 is designed for powering 1.8 V digital logic, microcontrollers, and wireless communication modules in space-constrained portable devices such as wearables, IoT sensors, and handheld instruments. Its low 0.38 V dropout and 150 mA current capability make it well suited for post-regulation duties on battery-powered boards where supply headroom is limited and PCB area is at a premium.
Specifications
| YTEOL | 6.4 |
| Dropout Voltage1-Max | 0.38V |
| Input Voltage-Max | 6V |
| Input Voltage-Min | 2.5V |
| JESD-30 Code | R-PDSO-G5 |
| Number of Functions | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.15A |
| Output Voltage1-Max | 1.854V |
| Output Voltage1-Min | 1.746V |
| Output Voltage1-Nom | 1.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 3% |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How low can the input voltage be while the MIC5317-1.8YM5 still maintains its 1.8 V output?
The MIC5317-1.8YM5 has a maximum dropout voltage of 0.38 V, meaning the input voltage must be at least 2.18 V to sustain a regulated 1.8 V output. Its minimum specified input voltage is 2.5 V, so even a partially discharged single-cell Li-ion battery near its cutoff supports stable 1.8 V regulation for microcontroller and wireless module rails.
How much output current can the MIC5317-1.8YM5 supply and which processor families does that cover?
The MIC5317-1.8YM5 supplies up to 150 mA output current at 1.8 V. This is sufficient for ARM Cortex-M0/M4 microcontrollers consuming 10–80 mA, Bluetooth Low Energy SoCs rated at 30–60 mA, and small FPGA I/O banks. For total system current above 150 mA a higher-current sibling in the MIC5317 family or a switching regulator should be considered.
What makes the SOT-23-5 package of the MIC5317-1.8YM5 advantageous in wearable product designs?
The SOT-23-5 package measures approximately 2.9 mm × 1.6 mm with a 0.95 mm pitch, occupying minimal PCB real estate. In wearable designs where every square millimeter counts, this small footprint allows the MIC5317-1.8YM5 to be placed directly adjacent to the target IC, reducing decoupling trace length and improving transient response for sensitive 1.8 V logic.
Over what temperature range does the MIC5317-1.8YM5 operate and does that include automotive cabin environments?
The MIC5317-1.8YM5 is specified for junction temperatures from -40°C to 125°C, covering the full industrial temperature range. Automotive cabin ambient temperatures typically reach 85°C; with the device's 125°C junction limit and adequate thermal management via a small PCB copper pad, the regulator can operate reliably in non-powertrain automotive cabin electronics and telematics modules.
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