MIC803-29D2VM3TR Microchip Integrated Circuit (Other) In Stock
Microchip MIC803-29D2VM3TR is a 3-pin microprocessor supervisor IC with a fixed 2.93 V reset threshold in a SOT-23 (TO-236) package. Provides reliable power-on reset and brownout detection for microcontrollers and DSPs with a single-channel supervisory function. Available in tape-and-reel for automated SMT assembly in space-constrained designs.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 3
- Lifecycle
- TRANSFERRED
- Datasheet
- MIC803-29D2VM3TR 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 MIC803-29D2VM3TR?
- Fixed 2.93 V reset threshold with single-channel supervisory function eliminates the need for external RC reset circuits in microprocessor power-on sequences
- 3-pin SOT-23 (TO-236) package occupies a PCB footprint of approximately 1.3 mm × 2.9 mm, enabling reset supervision in the smallest embedded designs
- REACH-compliant plastic/epoxy construction with thin-profile small-outline packaging meets environmental regulations for consumer and industrial product families
What is MIC803-29D2VM3TR used for?
MIC803-29D2VM3TR is used in microprocessor and microcontroller reset circuits to ensure the CPU remains in a defined reset state until the supply voltage rises above 2.93 V and stabilizes. It is commonly placed on 3.3 V or 3 V rail power-up circuits in portable instruments, IoT sensors, and embedded control boards where reliable startup sequencing is critical. The compact SOT-23 footprint allows it to be placed adjacent to the MCU supply pin without consuming significant board area.
What are the specifications of MIC803-29D2VM3TR?
| 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) | 3.3V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +2.93V |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the MIC803-29D2VM3TR datasheet?
MIC803-29D2VM3TR Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MIC803-29D2VM3TR?
Compatible alternatives and drop-in replacements for MIC803-29D2VM3TR:
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
3-Pin Microprocessor Supervisor Circuit w/ Open-Drain Reset Output
Voltage Supervisor/Reset IC, Fixed, 1 Channel, +4.1V, PDSO3
3-Pin Microprocessor Supervisor Circuit w/ Open-Drain Reset Output
3-Pin Microprocessor Supervisor Circuit w/ Open-Drain Reset Output
Frequently Asked Questions
What reset threshold voltage does MIC803-29D2VM3TR detect, and how does it protect a microcontroller?
MIC803-29D2VM3TR detects a fixed reset threshold of 2.93 V on the monitored supply rail. When the supply falls below this threshold, the device asserts a reset output to hold the microcontroller in a safe reset state, preventing erratic program execution during power-on ramp-up or brownout conditions that can corrupt EEPROM or cause undefined GPIO behavior at under-voltage levels.
How does the 3-pin SOT-23 package of MIC803-29D2VM3TR compare to a discrete RC reset circuit?
A discrete RC reset circuit requires a resistor and capacitor to generate a reset delay, and its threshold voltage is poorly defined and varies with component tolerance by up to ±20%. MIC803-29D2VM3TR integrates a precision comparator and reference in a 3-pin SOT-23 body measuring roughly 1.3 mm × 2.9 mm, delivering a tightly controlled 2.93 V threshold with a typical accuracy of ±2%, replacing 3 to 5 external components with a single device.
For which supply rail voltages is MIC803-29D2VM3TR most commonly specified?
MIC803-29D2VM3TR with its 2.93 V threshold is optimized for monitoring 3 V or 3.3 V supply rails commonly generated by LDO regulators in embedded systems. It provides a suitable under-voltage detection margin below a 3.3 V nominal rail, asserting reset when the voltage droops more than approximately 11% below nominal, which is within the allowable operating range of most 3.3 V-rated PIC, AVR, and ARM Cortex-M0 microcontrollers.
Can MIC803-29D2VM3TR be used in industrial temperature environments, and is it RoHS compliant?
MIC803-29D2VM3TR is built in a REACH-compliant plastic/epoxy package and, as part of the MIC803 family, supports an operating temperature range covering at least -40°C to +85°C for industrial environments. The SOT-23 package with its thin-profile construction handles typical industrial thermal cycling without delamination, making it a reliable choice for voltage supervisors in outdoor sensors, HVAC controllers, and factory automation units exposed to wide temperature swings.
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