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Microchip Technology MIC5502-1.8YMT-TR
- Part No.:
- MIC5502-1.8YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
MIC5502-1.8YMT-TR.pdf
- Description:
- IC REG LINEAR 1.8V 300MA 4TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,297
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Product details
Overview
MIC5502-1.8YMT-TR from Microchip Technology is a 300 mA fixed-output 1.8 V low-dropout linear regulator in a 4-lead 1.0 mm × 1.0 mm thin DFN package, featuring ±2% output accuracy, 160 mV dropout at full load, and integrated auto-discharge functionality for rapid output voltage decay during shutdown - ideal for power sequencing in portable medical devices and battery-powered GPS modules.
For engineers reviewing the MIC5502-1.8YMT-TR datasheet, MIC5502-1.8YMT-TR pinout, MIC5502-1.8YMT-TR application, or MIC5502-1.8YMT-TR equivalent, this page delivers verified electrical specs, thermal performance data, enable logic behavior, ceramic capacitor stability requirements, and real-world use cases aligned to the DS20006006B revision B specification.
Technical Context
The MIC5502-1.8YMT-TR implements a CMOS-based LDO architecture with active-high enable control and an internal 25 Ω NFET discharge path activated when EN = 0 V. Its regulation loop maintains 1.8 V output across input voltages from 2.5 V to 5.5 V while sustaining ±2% accuracy over –40°C to +125°C junction temperature.
It achieves stable operation with only 1 μF ceramic input and output capacitors (X5R/X7R dielectric), draws just 38 μA quiescent current at no load, and enters zero-off-mode (<1 μA) when disabled - making it suitable for always-on subsystems requiring low standby power and fast turn-off response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2% (±3% over –40°C to +125°C); enables precise core voltage supply for 1.8 V logic rails. |
| Max Output Current | 300 mA guaranteed; supports moderate-power peripherals like GPS baseband ICs or sensor hubs without thermal derating in DFN package. |
| Dropout Voltage | 160 mV @ 300 mA; allows operation from 2.5 V input down to 1.96 V output, extending battery runtime in single-cell Li-ion systems. |
| Quiescent Current | 38 μA typical @ no load; minimizes battery drain in sleep modes of portable electronics. |
| Auto-Discharge | 25 Ω internal NFET enabled when EN = 0 V; discharges external output capacitance rapidly, preventing residual voltage hold-up in power-down sequences. |
| Operating Temp | –40°C to +125°C junction range; qualified for automotive cabin and industrial edge-node environments. |
| PSRR | 60 dB @ 1 kHz; suppresses ripple from noisy DC-DC pre-regulators feeding sensitive analog or RF sections. |
Pinout & Package
Package: 4-Lead 1.0 mm × 1.0 mm Thin DFN (MT), ePAD exposed thermal pad (to be connected to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 4) | Supply Input | Accepts 2.5 V to 5.5 V input; requires 1 μF X5R/X7R ceramic capacitor to GND for stability and high-frequency noise filtering. |
| EN (Pin 3) | Enable Input | Active-high logic control; must be driven ≥1.2 V to enable; floats indeterminate for MIC5502 - external pull-up required if uncontrolled. |
| VOUT (Pin 1) | Regulated Output | Delivers fixed 1.8 V; internally connects to 25 Ω discharge FET when EN = 0 V, enabling fast ramp-down of downstream capacitance. |
| GND (Pin 2) | Ground Reference | Power and signal return; ePAD must be soldered to PCB ground plane to achieve θJA = 250°C/W and sustain 300 mA continuous operation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | 1.0 mm × 1.0 mm DFN package saves >60% board area vs. SOT23-5; enables dense portable PCB layouts. |
| Auto-discharge circuit | 25 Ω internal NFET activates on disable, reducing VOUT to <100 mV within ~100 μs for 10 μF load - critical for safe power sequencing. |
| Ceramic capacitor compatibility | Stable with ≥1 μF X5R/X7R ceramics on input and output; eliminates need for tantalum or electrolytic capacitors and associated ESR constraints. |
| Zero-off-mode current | <1 μA shutdown current; preserves battery charge during extended idle periods in wearable or remote-sensor applications. |
| Thermal & current protection | Integrated thermal shutdown and foldback current limiting prevent damage under overload or poor heatsinking conditions. |
Applications
| Portable Medical Sensors | GPS/GLONASS Modules |
|---|---|
|
Use Scenario: Powering ultra-low-power ECG front-end ASICs and Bluetooth LE transceivers in disposable patch monitors. IC Role / Device Role / Timing Role: Primary 1.8 V core supply regulator with fast shutdown and minimal leakage during patient-worn standby mode. Use Value: Enables >7-day battery life via 38 μA quiescent current and rapid VOUT discharge prevents false wake-ups from residual voltage on sensor bias lines. |
Use Scenario: Supplying 1.8 V digital baseband and RF synthesizer blocks in handheld navigation units. IC Role / Device Role / Timing Role: Stable LDO post-regulator after buck converter; provides clean, low-noise 1.8 V rail decoupled from switching noise. Use Value: 60 dB PSRR at 1 kHz suppresses DC-DC ripple, improving GPS acquisition time and position accuracy under dynamic RF loading. |
| Smartphone Subsystems | Industrial Handheld Terminals |
|
Use Scenario: Powering always-on motion co-processors and ambient light sensors during display-off state. IC Role / Device Role / Timing Role: Always-on LDO with zero-off-mode and auto-discharge ensures deterministic reset behavior during system suspend/resume cycles. Use Value: Eliminates need for external discharge resistors or GPIO-controlled FETs, reducing BOM count and layout complexity. |
Use Scenario: Regulating 1.8 V for FPGA configuration memory and interface logic in ruggedized barcode scanners. IC Role / Device Role / Timing Role: Industrial-grade LDO supporting –40°C to +125°C operation with robust thermal protection under variable ambient conditions. Use Value: Maintains regulation integrity across wide temperature swings and transient loads, ensuring reliable boot and communication integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5504-1.8YMT-TR | Includes both auto-discharge AND internal EN pull-down (4 MΩ); MIC5502 requires external EN pull-up. | Suitable where processor GPIO cannot guarantee EN state during boot; eliminates need for external resistor. | Select MIC5504-1.8YMT-TR if floating EN pin behavior must be avoided without added components. |
| Torex XC6210B182MR-G | Same 1.8 V/300 mA spec but uses different enable polarity (active-low), higher 65 μA IQ, and no auto-discharge. | Lacks rapid VOUT discharge; requires external circuitry for controlled power-down in sequenced systems. | Choose XC6210B182MR-G only when active-low enable matches existing control logic and discharge is handled externally. |
Compared with MIC5502-1.8YMT-TR, MIC5504-1.8YMT-TR adds EN pull-down for robustness against floating signals, while XC6210B182MR-G trades off discharge capability and quiescent current for alternate enable polarity - neither is pin-compatible, and all require layout verification for thermal pad and decoupling placement.
Availability
MIC5502-1.8YMT-TR is available at Aetrix Electronics and suitable for portable medical sensors, GPS modules, smartphone subsystems, and industrial handheld terminals requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MIC5502-1.8YMT-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
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with a focus on reliability, longevity, and industrial-grade qualification.
The MIC5502-1.8YMT-TR belongs to Microchip's MIC550x family of ultra-small, high-accuracy LDOs designed specifically for space-constrained, battery-operated portable electronics demanding low IQ, fast transient response, and robust power sequencing.
FAQ
What is the maximum input voltage rating for the MIC5502-1.8YMT-TR?
The MIC5502-1.8YMT-TR 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 violate functional specifications, even if below the 6 V stress limit. For reliable operation in 5 V systems, ensure VIN remains ≤5.5 V with appropriate margin for ripple and tolerance.
Does the MIC5502-1.8YMT-TR require an external pull-up resistor on the EN pin?
Yes - the MIC5502-1.8YMT-TR does not include an internal EN pull-down resistor. Leaving EN floating risks indeterminate output behavior. A pull-up resistor to VIN (typically 100 kΩ–1 MΩ) is required to ensure reliable startup and avoid unintended shutdown during processor boot or reset sequences.
Can the MIC5502-1.8YMT-TR operate stably with less than 1 μF output capacitance?
No - the MIC5502-1.8YMT-TR is characterized and guaranteed stable only with ≥1 μF ceramic output capacitance (X5R or X7R dielectric). Using smaller values or high-ESR capacitors (e.g., Y5V, aluminum electrolytic) may cause oscillation, poor transient response, or loss of regulation, especially under load steps.
What is the thermal resistance (θJA) of the MIC5502-1.8YMT-TR in its DFN package?
The MIC5502-1.8YMT-TR in the 4-lead 1.0 mm × 1.0 mm Thin DFN (MT) package has a junction-to-ambient thermal resistance (θJA) of 250°C/W under standard JEDEC PCB conditions. Achieving this value requires proper soldering of the ePAD to a thermally robust GND plane; inadequate thermal land design increases θJA and reduces safe continuous current capability.
Is the MIC5502-1.8YMT-TR suitable for RF transmitter power supply applications?
No - the MIC5502-1.8YMT-TR is explicitly stated in Microchip's DS20006006B (Rev B, October 2019) as "not suitable for RF transmitter systems." Its PSRR and noise performance are optimized for digital and mixed-signal loads, not the stringent phase noise and spurious emission requirements of RF PA biasing.
MIC5502-1.8YMT-TR 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):
- 1.8V
- 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)
MIC5502-1.8YMT-TR FAQ
1.How can I place an order for MIC5502-1.8YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5502-1.8YMT-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 MIC5502-1.8YMT-TR reliable?
The price and inventory of MIC5502-1.8YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5502-1.8YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5502-1.8YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5502-1.8YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5502-1.8YMT-TR?
MIC5502-1.8YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5502-1.8YMT-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 MIC5502-1.8YMT-TR?
For technical support, including MIC5502-1.8YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5502-1.8YMT-TR requirements.
6.How does Aetrix verify that MIC5502-1.8YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5502-1.8YMT-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 MIC5502-1.8YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5502-1.8YMT-TR?
All MIC5502-1.8YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5502-1.8YMT-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 MIC5502-1.8YMT-TR part is unused and in its original packaging.
Return procedure for MIC5502-1.8YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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