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Microchip Technology MIC5502-2.8YMT-TR
- Part No.:
- MIC5502-2.8YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
MIC5502-2.8YMT-TR.pdf
- Description:
- IC REG LINEAR 2.8V 300MA 4TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,422
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Product details
Overview
MIC5502-2.8YMT-TR from Microchip Technology is a 300 mA fixed-output low-dropout (LDO) linear regulator with 2.8 V output, ±2% accuracy, 160 mV dropout at full load, 38 μA quiescent current, and auto-discharge functionality activated on enable pin deactivation. It operates from 2.5 V to 5.5 V input and targets power management in space-constrained portable electronics requiring fast output discharge during shutdown.
For engineers reviewing the MIC5502-2.8YMT-TR datasheet, MIC5502-2.8YMT-TR pinout, MIC5502-2.8YMT-TR application, or MIC5502-2.8YMT-TR equivalent, key selection criteria include guaranteed 300 mA output under 160 mV dropout, stable operation with 1 μF ceramic capacitors, –40°C to +125°C junction temperature range, and integrated 25 Ω auto-discharge FET for rapid VOUT decay.
Technical Context
The MIC5502-2.8YMT-TR implements a CMOS-based LDO architecture with active-high enable control and internal auto-discharge circuitry tied to the EN pin state. Its regulation loop maintains ±2% output accuracy across –40°C to +125°C while delivering up to 300 mA with only 160 mV VIN–VOUT differential at full load.
It features thermal shutdown and current limiting protection, draws just 38 μA ground current at no load, and achieves 60 dB PSRR at 1 kHz. The device enters zero-off-mode (<1 μA IGNDSHDN) when EN is low and discharges external capacitance via a dedicated 25 Ω NFET path-exclusive to MIC5502 and MIC5504 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2% over –40°C to +125°C; enables precise biasing of 2.8 V logic or analog rails. |
| Max Output Current | 300 mA guaranteed; supports moderate-power peripherals like sensors, RF front-ends, or MCU cores without derating. |
| Dropout Voltage | 160 mV @ 300 mA; allows operation with only 2.96 V input when regulating 2.8 V, extending battery runtime. |
| Quiescent Current | 38 μA typical @ no load; minimizes standby power loss in always-on subsystems. |
| Auto-Discharge | 25 Ω internal NFET activated when EN = low; discharges 10 μF output cap in <250 μs, preventing residual voltage hold-up. |
| Input Voltage Range | 2.5 V to 5.5 V; compatible with single-cell Li-ion (2.7–4.2 V), LiFePO₄, or 3.3/5 V system rails. |
| PSRR | 60 dB @ 1 kHz; suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
Pinout & Package
Package: 4-Lead 1.0 mm × 1.0 mm Thin DFN (TDFN-4, MT), ePAD exposed thermal pad connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 4) | Supply Input | Accepts 2.5–5.5 V input; requires 1 μF ceramic decoupling to GND for stability. |
| EN (Pin 3) | Active-High Enable | Logic-high ≥1.2 V enables regulation; logic-low ≤0.2 V disables output and activates auto-discharge. |
| VOUT (Pin 1) | Regulated Output | Delivers fixed 2.8 V ±2%; sinks discharge current via internal 25 Ω FET when EN = low. |
| GND (Pin 2) | Ground Reference | Power and signal return; must be connected to PCB ground plane and ePAD for thermal performance. |
| ePAD | Thermal Heatsink | Exposed copper pad beneath package; soldered to GND plane to achieve θJA = 250°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | 1.0 mm × 1.0 mm TDFN package saves >60% board area vs. SOT23-5, critical for wearables and compact modules. |
| Auto-discharge function | Integrated 25 Ω NFET pulls VOUT to GND within microseconds of EN deactivation-eliminates need for external bleed resistors. |
| Low-noise regulation | 175 μVRMS output noise (10 Hz–100 kHz) ensures clean supply for ADCs, PLLs, and RF receivers. |
| Stable with minimal capacitance | Guaranteed stability using only 1 μF X5R/X7R ceramic output capacitor-reduces BOM count and cost. |
| Robust protection suite | Thermal shutdown and foldback current limiting prevent damage during overload or ambient temperature excursions. |
Applications
| Smartphone Power Rails | Medical Sensor Modules |
|---|---|
Use Scenario: Supplying 2.8 V bias to image sensor interfaces and touch controller ICs during active mode, then rapidly discharging stored energy upon sleep entry. IC Role / Device Role / Timing Role: Primary LDO providing regulated 2.8 V rail with sub-100 μs turn-on and auto-discharge timing synchronized to AP suspend/resume signals. Use Value: Eliminates external discharge circuitry, reduces power sequencing complexity, and meets smartphone fast-sleep requirements (<1 ms VOUT decay). | Use Scenario: Powering ultra-low-power biosignal amplifiers and ADCs in wearable ECG patches where residual voltage must clear before next measurement cycle. IC Role / Device Role / Timing Role: Precision 2.8 V reference-grade supply enabling 16-bit ADC accuracy; auto-discharge ensures zero-volt hold-up between sampling intervals. Use Value: Prevents signal corruption from floating VOUT, extends battery life via 38 μA IQ, and meets IEC 60601 leakage safety thresholds. |
| Portable GPS Receivers | Industrial Handheld Terminals |
Use Scenario: Delivering clean 2.8 V to GNSS baseband processors and RF front-ends in battery-powered navigation devices operating across –20°C to +70°C ambient. IC Role / Device Role / Timing Role: Main system LDO supporting 300 mA peak current during satellite acquisition bursts; PSRR >60 dB rejects DC/DC ripple. Use Value: Maintains GNSS lock stability under dynamic load transients and extends usable battery capacity by minimizing dropout losses. | Use Scenario: Regulating 2.8 V for barcode scanner lasers and display drivers in ruggedized handheld terminals used in warehouse logistics. IC Role / Device Role / Timing Role: High-reliability LDO with –40°C to +125°C operation ensuring consistent performance in uncontrolled environments and thermal cycling. Use Value: Guarantees 300 mA delivery even at elevated case temperatures (65°C max ambient per thermal calc), avoiding brownouts during extended scanning duty cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5504-2.8YMT-TR | Includes both auto-discharge and internal EN pull-down (4 MΩ); same 2.8 V output, package, and specs. | Suitable when EN signal may float during processor boot; eliminates need for external pull-down resistor. | Select MIC5504-2.8YMT-TR if system lacks a defined EN drive source during startup; otherwise MIC5502-2.8YMT-TR suffices. |
| Torex XC6210B282MR-G | 2.8 V, 300 mA, 250 mV dropout @ 300 mA; no auto-discharge; SOT-25 package (2.9 × 2.8 mm). | Larger footprint, higher dropout, no discharge path-requires external circuitry for VOUT decay. | Choose only if auto-discharge is unnecessary and board space permits larger SOT-25; verify thermal performance at 250 mV dropout. |
Compared with MIC5504-2.8YMT-TR, the MIC5502-2.8YMT-TR lacks internal EN pull-down but matches all electrical and discharge specs-making it optimal when EN is actively driven. Versus XC6210B282MR-G, MIC5502-2.8YMT-TR delivers lower dropout, smaller size, and integrated discharge-critical for space- and power-sensitive designs.
Availability
MIC5502-2.8YMT-TR is available at Aetrix Electronics and suitable for smartphone power rails, medical sensor modules, portable GPS receivers, and industrial handheld terminals requiring stable component supply across automotive and industrial temperature ranges.
Supply support for MIC5502-2.8YMT-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 global manufacturing and quality certifications.
The MIC550x family is designed for ultra-compact, high-efficiency power delivery in battery-powered portable electronics-emphasizing low IQ, small footprint, and integrated protection features like auto-discharge.
FAQ
What is the maximum input voltage rating for the MIC5502-2.8YMT-TR?
The MIC5502-2.8YMT-TR has an absolute maximum input voltage of +6 V, but its recommended operating range is +2.5 V to +5.5 V. Exceeding 5.5 V risks permanent damage, and operation above 6 V violates absolute maximum ratings per DS20006006B-page 3. Always maintain VIN within 2.5–5.5 V for reliable long-term performance of the MIC5502-2.8YMT-TR.
Does the MIC5502-2.8YMT-TR require an external pull-down resistor on the EN pin?
No, the MIC5502-2.8YMT-TR does not include an internal EN pull-down resistor-only MIC5503 and MIC5504 variants do. Leaving EN floating may cause indeterminate output states. A logic-driven EN signal (≥1.2 V for ON, ≤0.2 V for OFF) is mandatory for proper operation of the MIC5502-2.8YMT-TR.
How fast does the MIC5502-2.8YMT-TR discharge the output capacitor when disabled?
When EN is pulled low, the MIC5502-2.8YMT-TR activates an internal 25 Ω NFET between VOUT and GND. With a 1 μF output capacitor, VOUT decays to <100 mV in under 25 μs; with 10 μF, decay completes in <250 μs. This behavior is confirmed in Figure 2-16 and Table 3-1 of the MIC5502-2.8YMT-TR datasheet.
Can the MIC5502-2.8YMT-TR operate with ceramic capacitors smaller than 1 μF?
No-the MIC5502-2.8YMT-TR is specified and tested for stability only with ≥1 μF ceramic output capacitance (X5R/X7R dielectric). Using smaller values risks oscillation or regulation loss, as stated in Section 4.2 of the MIC5502-2.8YMT-TR datasheet. Input capacitance also requires exactly 1 μF for guaranteed stability.
Is the MIC5502-2.8YMT-TR suitable for RF transmitter applications?
No-the MIC5502-2.8YMT-TR is explicitly stated as "not suitable for RF transmitter systems" per Section 4.0 of DS20006006B. Its PSRR and noise characteristics are optimized for receiver-side analog/RF circuits, not high-power RF PA biasing where stringent spectral purity and transient response are required.
MIC5502-2.8YMT-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):
- 2.8V
- 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)
MIC5502-2.8YMT-TR FAQ
1.How can I place an order for MIC5502-2.8YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5502-2.8YMT-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 MIC5502-2.8YMT-TR reliable?
The price and inventory of MIC5502-2.8YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5502-2.8YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5502-2.8YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5502-2.8YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5502-2.8YMT-TR?
MIC5502-2.8YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5502-2.8YMT-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 MIC5502-2.8YMT-TR?
For technical support, including MIC5502-2.8YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5502-2.8YMT-TR requirements.
6.How does Aetrix verify that MIC5502-2.8YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5502-2.8YMT-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 MIC5502-2.8YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5502-2.8YMT-TR?
All MIC5502-2.8YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5502-2.8YMT-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 MIC5502-2.8YMT-TR part is unused and in its original packaging.
Return procedure for MIC5502-2.8YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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