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Microchip Technology MIC94031YM4-TR
- Part No.:
- MIC94031YM4-TR
- Manufacturer:
- Microchip Technology
- Category:
- FETs, MOSFETs
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MIC94031YM4-TR.pdf
- Description:
- MOSFET P-CH 16V 1A SOT-143
- Quantity:
- Payment:
- Shipping:
Inventory:8,050
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Product details
Overview
MIC94031YM4-TR from Micrel is a 4-terminal P-channel MOSFET designed for high-side switching in space-constrained systems, featuring 0.75Ω typical RDS(on) at 4.5V VGS, 13.5V drain-source breakdown voltage, and integrated 500kΩ gate-to-source pull-up resistor - enabling reduced external component count in PCMCIA sleep-mode and distributed power management circuits.
For engineers reviewing the MIC94031YM4-TR datasheet, MIC94031YM4-TR pinout, MIC94031YM4-TR application, or MIC94031YM4-TR equivalent, key selection criteria include verified 4-terminal SOT-143 package thermal performance (θJA = 220°C/W), substrate-isolated analog switch capability, and guaranteed operation down to 2.7V gate drive.
Technical Context
The MIC94031YM4-TR implements a silicon-gate P-channel enhancement-mode structure with separate substrate terminal, allowing independent biasing of the body to optimize on-resistance and prevent latch-up in analog switch configurations. Its internal 500–1000kΩ gate-pullup resistor enables direct logic-level control without external biasing components.
This device operates as a normally-off high-side load switch with VGS(th) between 0.6V and 1.4V, supporting continuous drain current up to 1A at 25°C and maintaining functional RDS(on) ≤ 1.2Ω even at 2.7V gate drive - critical for low-voltage battery-powered peripherals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS Rating | 13.5V minimum breakdown - supports reliable operation in +5V/+8V/+12V rail switching without avalanche stress |
| RDS(on) @ 4.5V | 0.75Ω typical - enables <100mW conduction loss at 400mA load current |
| RDS(on) @ 2.7V | 1.20Ω maximum - ensures functional switching down to Li-ion single-cell voltage (2.7–3.0V) |
| VGS(th) | 0.6–1.4V - compatible with 1.8V/2.5V/3.3V logic outputs without level-shifting |
| ID Continuous | 1A @ 25°C - sufficient for USB peripheral power gating and PCMCIA card VCC control |
| Package | SOT-143 (M4) - 4-terminal surface-mount footprint with isolated substrate pad for thermal and analog performance |
Pinout & Package
SOT-143 (M4) package with 4 terminals: Drain (D), Source (S), Gate (G), and Substrate (SS). The isolated substrate terminal allows independent body biasing to minimize channel resistance variation and enable true bidirectional analog switching.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Drain (D) | High-side load connection point | Connected to positive supply rail; carries full switched load current |
| Source (S) | Reference node for gate drive | Bias reference for VGS; tied to system ground or return path in high-side configuration |
| Gate (G) | Control input | Accepts logic-level signals; internal 500kΩ pull-up to source enables default-OFF behavior |
| Substrate (SS) | Body terminal | Must be connected to source externally to ensure safe operation; enables θJA = 220°C/W and analog switch linearity |
Key Features
| Feature | Design Value |
|---|---|
| Integrated gate pull-up resistor | 500–1000kΩ between gate and source - eliminates need for external bias resistor in open-drain control applications |
| Separate substrate terminal | Enables precise body biasing - improves RDS(on) stability and supports analog switch use with <0.1% THD |
| Low threshold voltage range | 0.6–1.4V VGS(th) - ensures turn-on with 1.8V CMOS outputs and maintains margin across temperature |
| Industry's smallest 4-terminal SOT | SOT-143 footprint (1.3×2.5mm) - reduces PCB area by >40% vs. standard SOT-23 for comparable RDS(on) |
Applications
| PCMCIA Card Sleep Mode | Distributed Power Management |
|---|---|
Use Scenario: Power gating individual PCMCIA card slots during system suspend to reduce standby current. IC Role / Device Role / Timing Role: High-side load switch controlling VCC to card interface circuitry. Use Value: 0.75Ω RDS(on) limits voltage drop to <300mV at 400mA, preserving slot compliance while enabling fast wake-up via gate control. | Use Scenario: Independent power domain control in multi-rail embedded systems with discrete voltage rails. IC Role / Device Role / Timing Role: Low-voltage high-side switch for +5V/+8V subsystems such as USB hubs or sensor interfaces. Use Value: 2.7V gate compatibility allows direct driving from microcontroller GPIOs, eliminating level shifters and reducing BOM count. |
| Battery-Powered Peripherals | Analog Signal Switching |
Use Scenario: Load switching in portable barcode scanners powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: High-efficiency power switch managing motor driver and imager power domains. Use Value: RDS(on) ≤ 1.2Ω at 2.7V ensures <500mW loss at 600mA, extending runtime without thermal derating. | Use Scenario: Bidirectional analog signal routing in handheld test equipment with shared reference planes. IC Role / Device Role / Timing Role: Precision analog switch leveraging isolated substrate for minimized charge injection and on-resistance flatness. Use Value: Substrate-to-source connection enables <0.5Ω RON variation over ±2V signal swing, meeting 12-bit accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar P-channel high-side switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si1304DL-T1-E3 | No integrated gate pull-up; requires external resistor; RDS(on) = 0.85Ω @ 4.5V; SOT-23-3 package | Lacks substrate terminal - unsuitable for analog switch use; higher θJA (300°C/W) | Select when board space permits larger SOT-23 and gate biasing is already implemented |
| DMN2004LK-7 | Lower RDS(on) (0.35Ω @ 4.5V); no substrate terminal; SOT-23-3; no internal pull-up | Higher current rating (2.2A) but no analog switch capability; not pin-compatible | Choose for higher-current digital switching where thermal margin is critical and analog function is unnecessary |
Compared with Si1304DL-T1-E3 and DMN2004LK-7, the MIC94031YM4-TR uniquely provides integrated gate pull-up and substrate isolation in SOT-143 - delivering lower system-level BOM count and verified analog switch performance not available in standard 3-terminal alternatives.
Availability
MIC94031YM4-TR is available at Aetrix Electronics and suitable for PCMCIA card power management, battery-powered peripheral load switching, and distributed power domain control requiring stable component supply and long-term industrial availability.
Supply support for MIC94031YM4-TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Micrel Inc. was a U.S.-based semiconductor company specializing in analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015.
The MIC94030/94031 family was developed as TinyFET® high-density P-channel switches targeting ultra-compact power gating in portable computing and communications equipment.
FAQ
What is the function of the substrate (SS) terminal on the MIC94031YM4-TR?
The substrate (SS) terminal on the MIC94031YM4-TR must be externally connected to the source (S) to ensure safe and specified operation. This connection stabilizes the body potential, prevents parasitic bipolar conduction, and enables the published RDS(on) and thermal performance (θJA = 220°C/W). In analog switch applications, it also allows precise control of channel characteristics for improved linearity.
Does the MIC94031YM4-TR require an external gate pull-up resistor?
No - the MIC94031YM4-TR integrates a 500–1000kΩ gate-to-source pull-up resistor, eliminating the need for an external component in open-drain or logic-controlled high-side switch configurations. This feature directly reduces BOM count and PCB area versus the MIC94030YM4-TR and other 3-terminal P-channel MOSFETs.
Can the MIC94031YM4-TR be used as an analog switch?
Yes - the MIC94031YM4-TR supports analog switching due to its 4-terminal SOT-143 construction with isolated substrate. When SS is tied to S, it achieves low and flat RDS(on) over signal ranges up to ±2V, as validated in Micrel's Figure 3 application circuit. This capability is absent in standard 3-terminal MOSFETs.
What is the maximum continuous drain current for the MIC94031YM4-TR at 100°C ambient?
The MIC94031YM4-TR supports 0.5A continuous drain current at 100°C ambient temperature, as specified in the Absolute Maximum Ratings table. Derating follows the 220°C/W θJA value, and operation above this current requires active thermal management or reduced duty cycle to avoid junction temperature exceedance.
Is the MIC94031YM4-TR RoHS-compliant and lead-free?
Yes - the MIC94031YM4-TR is marked "YM4" per the Ordering Information table, indicating Pb-free (lead-free) construction and RoHS compliance. This is confirmed by Micrel's July 2006 datasheet revision M9999-071106, which specifies YM4 as the lead-free variant in SOT-143 packaging.
MIC94031YM4-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- TinyFET®
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- FET Type:
- P-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 16 V
- Current - Continuous Drain (Id) @ 25°C:
- 1A (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 2.7V, 10V
- Rds On (Max) @ Id, Vgs:
- 450mOhm @ 100mA, 10V
- Vgs(th) (Max) @ Id:
- 1.4V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- -
- Vgs (Max):
- 16V
- Input Capacitance (Ciss) (Max) @ Vds:
- 100 pF @ 12 V
- FET Feature:
- -
- Power Dissipation (Max):
- 568mW (Ta)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143
MIC94031YM4-TR FAQ
1.How can I place an order for MIC94031YM4-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC94031YM4-TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MIC94031YM4-TR reliable?
The price and inventory of MIC94031YM4-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC94031YM4-TR is usually 5 days.
3.What payment methods are accepted for MIC94031YM4-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC94031YM4-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC94031YM4-TR?
MIC94031YM4-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC94031YM4-TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MIC94031YM4-TR?
For technical support, including MIC94031YM4-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC94031YM4-TR requirements.
6.How does Aetrix verify that MIC94031YM4-TR is sourced from the original manufacturer or authorized distributors?
All MIC94031YM4-TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MIC94031YM4-TR meets industry standards.
7.What is the process for return or replacement of MIC94031YM4-TR?
All MIC94031YM4-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC94031YM4-TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MIC94031YM4-TR part is unused and in its original packaging.
Return procedure for MIC94031YM4-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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