MIC803-46D2VM3TR Microchip Integrated Circuit (SOT23 (3-Pin)) In Stock
Microchip MIC803-46D2VM3TR is a single-channel voltage supervisor and microprocessor reset IC in a 3-pin SOT-23 package. It monitors supply voltage with a fixed 4.63 V threshold and asserts a reset signal during power-up and brownout events. Ideal for reliable system reset management in embedded designs.
- Manufacturer
- Microchip
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- TRANSFERRED
- Datasheet
- MIC803-46D2VM3TR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MIC803-46D2VM3TR?
- Single-channel voltage supervisor with fixed 4.63 V reset threshold for precise brownout detection
- Automatic reset assertion during power-up for safe microcontroller initialization sequences
- Active-low open-drain reset output compatible with most microprocessor RESET pins
- Ultra-compact 3-pin SOT-23 package requiring minimal board space and zero external components
- Wide operating temperature range supporting industrial and commercial embedded designs
What is MIC803-46D2VM3TR used for?
The MIC803-46D2VM3TR provides dependable power-on and brownout reset supervision for microcontrollers and FPGAs in industrial control units, communications equipment, and consumer electronics. By asserting the reset output whenever the supply dips below 4.63 V, it prevents microcontrollers from executing corrupted code during power anomalies. Its tiny 3-pin SOT-23 footprint makes it easy to add reset supervision to any board without significantly increasing size or BOM cost.
What are the specifications of MIC803-46D2VM3TR?
| Reach Compliance Code | Compliant |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-G3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +4.63V |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the MIC803-46D2VM3TR datasheet?
MIC803-46D2VM3TR Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MIC803-46D2VM3TR?
Compatible alternatives and drop-in replacements for MIC803-46D2VM3TR:
Voltage Supervisor/Reset IC, Fixed, 1 Channel, +4.1V, PDSO3
Voltage Supervisor/Reset IC, Fixed, 1 Channel, +2.93V, PDSO3
3-Pin Microprocessor Supervisor Circuit w/ Open-Drain Reset Output
3-Pin Microprocessor Supervisor Circuit w/ Open-Drain Reset Output
Frequently Asked Questions
At what voltage threshold does the MIC803-46D2VM3TR assert its reset output?
The MIC803-46D2VM3TR uses a fixed reset threshold of 4.63 V. When the monitored supply voltage falls below this level, the device pulls the active-low reset output low to hold the microcontroller in reset, preventing erratic code execution during brownout or slow power-up conditions.
Does the MIC803-46D2VM3TR require external resistors or capacitors to set the reset threshold?
No. The MIC803-46D2VM3TR has a factory-trimmed internal reference that sets the fixed 4.63 V threshold without any external programming components. Only 3 pins are required: VCC, GND, and RESET, simplifying PCB layout and reducing BOM to a single 3-pin SOT-23 component.
For which power-supply voltage levels is the MIC803-46D2VM3TR best suited in embedded systems?
With a 4.63 V reset threshold, the MIC803-46D2VM3TR is designed to supervise 5 V power rails, which are common in MCU systems powered by USB (5 V) or regulated 5 V linear supplies. The 370 mV margin below 5 V nominal provides reliable brownout detection before supply rail collapse causes logic errors.
How does the SOT-23 package of the MIC803-46D2VM3TR compare in board area to a discrete reset circuit built from resistors and a comparator?
The 3-pin SOT-23 package measures approximately 1.3 mm x 2.9 mm, replacing a discrete reset circuit that would typically require a comparator IC, 2 resistors, and a capacitor occupying several square millimetres. The integrated solution cuts component count by at least 4 parts and eliminates tolerance stack-up errors in threshold setting.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
More from Microchip
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit