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Microchip Technology MIC5504-3.1YMT-TZ
- Part No.:
- MIC5504-3.1YMT-TZ
- Manufacturer:
- Microchip Technology
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
MIC5504-3.1YMT-TZ.pdf
- Description:
- IC REG LINEAR 3.1V 300MA 4TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,542
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Product details
Overview
MIC5504-3.1YMT-TZ from Microchip Technology is a 300 mA, fixed 3.1 V output low-dropout linear regulator with auto-discharge and internal enable pull-down, operating from 2.5 V to 5.5 V input, ±2% output accuracy, and 160 mV dropout at full load - deployed in battery-powered portable electronics requiring fast turn-off and reliable boot-up behavior.
For engineers reviewing the MIC5504-3.1YMT-TZ datasheet, MIC5504-3.1YMT-TZ pinout, MIC5504-3.1YMT-TZ application, or MIC5504-3.1YMT-TZ equivalent, this page delivers verified electrical specs, validated DFN-4 package layout, thermal performance data, and real-world use cases for portable medical devices, GPS modules, and smart handhelds where zero-quiescent-current shutdown and output discharge are critical.
Technical Context
The MIC5504-3.1YMT-TZ integrates both auto-discharge (25 Ω NFET switch activated on EN low) and internal 4 MΩ enable pull-down - eliminating external components needed for safe power sequencing during processor boot-up or brown-out recovery. Its CMOS-based architecture enables 38 μA quiescent current and zero-off-mode operation.
Stable with only 1 μF ceramic output capacitance, it achieves 60 dB PSRR at 1 kHz and maintains regulation down to 0 mA load - supporting always-on keep-alive rails in CMOS RAM applications while delivering 300 mA continuous output across –40°C to +125°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.1 V ±2% (–40°C to +125°C), enabling direct replacement of 3.3 V LDOs in margin-sensitive logic rails. |
| Max Output Current | 300 mA guaranteed, sufficient for powering baseband processors, PMIC sub-rails, or sensor hubs in compact portable designs. |
| Dropout Voltage | 160 mV @ 300 mA, allowing operation from 3.26 V input - critical for single-cell Li-ion systems under discharge. |
| Quiescent Current | 38 μA typical, minimizing standby power loss in battery-backed subsystems like real-time clocks or wake-on-event circuits. |
| Enable Function | Active-high EN with internal 4 MΩ pull-down; ensures default OFF state when control signal floats - prevents unintended power-up. |
| Auto-Discharge | 25 Ω internal NFET activates on EN low, discharging output capacitors within microseconds - avoids residual voltage hazards during reset. |
| Thermal Protection | Integrated thermal shutdown and current limit (400–900 mA), preventing damage during short-circuit or high-ambient conditions. |
Pinout & Package
Package: 4-Lead 1.0 mm × 1.0 mm Thin DFN (TDFN-4, MT), exposed thermal pad (ePAD) - optimized for space-constrained PCB layouts and thermal dissipation in ultra-thin mobile enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 4) | Supply Input | Accepts 2.5 V–5.5 V input; requires 1 μF ceramic decoupling capacitor placed adjacent to pin for stability. |
| EN (Pin 3) | Enable Control | Active-high logic input; internal 4 MΩ pull-down ensures disable on float - eliminates need for external resistor. |
| VOUT (Pin 1) | Regulated Output | Delivers fixed 3.1 V ±2%; auto-discharges via 25 Ω path when EN = low - clears hold-up charge before re-enabling. |
| GND (Pin 2) | Ground Reference | Power and signal return; must be connected directly to ePAD and system ground plane for thermal and noise integrity. |
| ePAD | Exposed Heatsink | Internally tied to GND; soldering to solid copper pour reduces θJA to 250°C/W - essential for 300 mA continuous operation. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-Discharge Circuit | 25 Ω internal NFET discharges output caps rapidly on disable - prevents latch-up or false wake events in downstream logic. |
| Internal Enable Pull-Down | 4 MΩ resistor ensures EN defaults to logic-low - removes risk of floating control lines causing erratic power sequencing. |
| Ultra-Low Quiescent Current | 38 μA typical ground current at no load - extends battery life in always-on monitoring functions (e.g., wearable health sensors). |
| Zero-Off-Mode Current | <1 μA shutdown current - eliminates leakage paths during deep sleep, critical for multi-year battery deployments. |
| Stability with Minimal Capacitance | Guaranteed stable with 1 μF X5R/X7R ceramic output cap - reduces BOM count and board area vs. legacy LDOs needing ≥10 μF. |
Applications
| Portable Medical Sensors | GPS/GLONASS Modules |
|---|---|
Use Scenario: Powering low-power ECG front-end ASICs and Bluetooth LE transceivers in disposable patch monitors. IC Role / Device Role / Timing Role: Primary 3.1 V rail regulator with auto-discharge ensuring clean reset between measurement cycles. Use Value: 38 μA quiescent current extends single-CR2032 battery life beyond 12 months; 25 Ω discharge clears sensor bias voltage in <100 μs. |
Use Scenario: Supplying RF front-end LNAs and baseband processors in miniaturized GNSS receivers for asset trackers. IC Role / Device Role / Timing Role: Stable 3.1 V bias source with tight line/load regulation to maintain RF gain flatness across battery discharge. Use Value: ±2% output accuracy preserves ADC reference integrity; 160 mV dropout enables operation down to 3.26 V input - extending usable battery range. |
| Smartphone Subsystem Rails | Industrial Handheld Terminals |
Use Scenario: Delivering clean 3.1 V power to camera ISP cores and touch controller ICs during burst capture mode. IC Role / Device Role / Timing Role: Secondary LDO with fast enable (50 μs turn-on) and load transient response ≤100 mV deviation. Use Value: 60 dB PSRR at 1 kHz suppresses switching noise from PMIC DC/DC converters; 1 μF stability simplifies layout near noise-sensitive analog blocks. |
Use Scenario: Regulating 3.1 V for ARM Cortex-M7 MCU cores and secure element ICs in ruggedized field terminals. IC Role / Device Role / Timing Role: High-reliability power source with –40°C to +125°C operation and thermal shutdown for extended outdoor deployment. Use Value: Internal pull-down prevents spurious enable during cold-start; 250°C/W θJA allows 300 mA delivery in sealed enclosures without heatsinks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5504-3.3YMT-TZ | Fixed 3.3 V output; identical package, pinout, and feature set (auto-discharge + EN pull-down). | Used where system logic requires nominal 3.3 V instead of 3.1 V - e.g., interfacing with standard I/O buffers or legacy peripherals. | Select when 3.3 V tolerance aligns with downstream device VIH/VIL thresholds; verify 3.3 V vs. 3.1 V does not violate margin in low-VDD logic. |
| Torex XC6210B312MR-G | 300 mA, 3.1 V fixed output, SOT-25 package; no auto-discharge or internal EN pull-down - requires external 100 kΩ pull-down resistor. | Suitable for cost-sensitive consumer products where boot reliability is less critical and board space permits discrete EN biasing. | Choose if footprint flexibility exists and auto-discharge is unnecessary; note higher design overhead due to missing integrated EN pull-down. |
Compared with MIC5504-3.1YMT-TZ, the 3.3 V variant offers identical functionality with tighter alignment to legacy 3.3 V standards, while the Torex alternative trades integration for lower unit cost - requiring external components to match MIC5504's robust boot behavior and rapid discharge capability.
Availability
MIC5504-3.1YMT-TZ is available at Aetrix Electronics and suitable for portable medical sensors, GPS modules, smartphone subsystem rails, and industrial handheld terminals requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MIC5504-3.1YMT-TZ 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
Microchip Technology is a global provider of microcontrollers, analog devices, and connectivity solutions, with expertise in low-power, high-reliability semiconductor design for embedded and industrial markets.
The MIC5504 belongs to Microchip's MIC550x family of ultra-small-footprint LDOs engineered specifically for space- and power-constrained portable electronics - emphasizing fast enable, zero-off current, and integrated power sequencing features.
FAQ
What is the maximum input voltage rating for the MIC5504-3.1YMT-TZ?
The MIC5504-3.1YMT-TZ has an absolute maximum input voltage of +6 V, but its specified operating range is +2.5 V to +5.5 V. Exceeding 5.5 V may cause permanent damage or unpredictable behavior, even if within the absolute rating - always design within the operational limits defined in DS20006006B.
Does the MIC5504-3.1YMT-TZ require an external pull-down resistor on the EN pin?
No. The MIC5504-3.1YMT-TZ includes an internal 4 MΩ pull-down resistor on the EN pin, ensuring the device remains disabled when the enable signal is left floating - a key differentiator from MIC5501/MIC5502 variants that require external biasing.
Can the MIC5504-3.1YMT-TZ operate without an output capacitor?
No. The MIC5504-3.1YMT-TZ requires a minimum 1 μF ceramic output capacitor (X5R or X7R dielectric) for stability. Operation without it risks oscillation or regulation failure - unlike some older LDOs, it is not designed for no-load or zero-capacitance operation.
What is the purpose of the auto-discharge function in the MIC5504-3.1YMT-TZ?
The auto-discharge function in the MIC5504-3.1YMT-TZ activates a 25 Ω internal NFET between VOUT and GND when EN is driven low, rapidly discharging external output capacitance. This prevents residual voltage from interfering with downstream logic states during power-down or reset sequences.
Is the MIC5504-3.1YMT-TZ suitable for RF transmitter applications?
No. Per Microchip's DS20006006B, the MIC5504-3.1YMT-TZ is explicitly stated as "not suitable for RF transmitter systems" due to potential noise coupling and insufficient PSRR at RF frequencies - use dedicated RF LDOs or switching regulators with RF filtering for such applications.
MIC5504-3.1YMT-TZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 4-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.38V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 55 µA
- Current - Supply (Max):
- 65 µA
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-TDFN (1x1)
MIC5504-3.1YMT-TZ FAQ
1.How can I place an order for MIC5504-3.1YMT-TZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5504-3.1YMT-TZ 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 MIC5504-3.1YMT-TZ reliable?
The price and inventory of MIC5504-3.1YMT-TZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5504-3.1YMT-TZ is usually 5 days.
3.What payment methods are accepted for MIC5504-3.1YMT-TZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5504-3.1YMT-TZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5504-3.1YMT-TZ?
MIC5504-3.1YMT-TZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5504-3.1YMT-TZ 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 MIC5504-3.1YMT-TZ?
For technical support, including MIC5504-3.1YMT-TZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5504-3.1YMT-TZ requirements.
6.How does Aetrix verify that MIC5504-3.1YMT-TZ is sourced from the original manufacturer or authorized distributors?
All MIC5504-3.1YMT-TZ 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 MIC5504-3.1YMT-TZ meets industry standards.
7.What is the process for return or replacement of MIC5504-3.1YMT-TZ?
All MIC5504-3.1YMT-TZ units undergo pre-shipment inspection (PSI). If there is an issue with MIC5504-3.1YMT-TZ, 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 MIC5504-3.1YMT-TZ part is unused and in its original packaging.
Return procedure for MIC5504-3.1YMT-TZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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