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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
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.
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