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Microchip Technology MIC5502-2.8YMT-TZ
- Part No.:
- MIC5502-2.8YMT-TZ
- Manufacturer:
- Microchip Technology
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
MIC5502-2.8YMT-TZ.pdf
- Description:
- IC REG LINEAR 2.8V 300MA 4TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,739
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Product details
Overview
MIC5502-2.8YMT-TZ from Microchip Technology is a 300 mA, fixed 2.8 V output 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 activated on disable-ideal for battery-powered portable electronics requiring fast output voltage decay during power-down sequences.
For engineers reviewing the MIC5502-2.8YMT-TZ datasheet, MIC5502-2.8YMT-TZ pinout, MIC5502-2.8YMT-TZ application, or MIC5502-2.8YMT-TZ equivalent, this page delivers verified technical context, real-world design implications of key specs, validated pin functions, and two confirmed alternative LDOs with documented functional and application-level differences.
Technical Context
The MIC5502-2.8YMT-TZ implements a CMOS-based LDO architecture with active-high enable control and an internal 25 Ω NFET discharge path tied to VOUT, activated only when EN = 0 V. Its regulation loop maintains stability with ≥1 μF ceramic output capacitance across –40°C to +125°C junction temperature.
It operates within 2.5 V to 5.5 V input range, delivers 300 mA guaranteed output current, and achieves 60 dB PSRR at 1 kHz-enabling clean power delivery to noise-sensitive analog and mixed-signal circuitry in compact portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2% (–40°C to +125°C), enabling direct replacement of 2.8 V rails without external feedback. |
| Max Output Current | 300 mA guaranteed, supporting moderate-power microcontrollers, sensors, and RF front-end biasing. |
| Dropout Voltage | 160 mV @ 300 mA, allowing operation from 2.96 V input-critical for single-cell Li-ion or Li-poly systems near end-of-discharge. |
| Quiescent Current | 38 μA typical, minimizing standby power loss in always-on subsystems like RTC or wake-up logic. |
| Auto-Discharge | 25 Ω internal NFET between VOUT and GND when disabled, discharging 10 μF load in <1 ms-prevents residual voltage from interfering with system reset sequencing. |
| PSRR | 60 dB @ 1 kHz, suppressing switching noise from upstream DC/DC converters feeding the LDO input. |
| Thermal Shutdown | Active at +125°C junction, protecting against thermal runaway during sustained high-load or poor PCB heatsinking conditions. |
Pinout & Package
Package: 4-Lead 1.0 mm × 1.0 mm Thin DFN (TDFN-4, MT suffix), ePAD exposed thermal pad (must be connected to GND for optimal thermal performance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 4) | Input supply connection | Accepts 2.5 V to 5.5 V; requires 1 μF ceramic decoupling capacitor placed ≤2 mm from pin to minimize high-frequency impedance. |
| EN (Pin 3) | Active-high enable control | Logic-high (≥1.2 V) enables regulation; logic-low (≤0.2 V) disables output and activates auto-discharge; floating state not permitted (no internal pull-down). |
| VOUT (Pin 1) | Regulated output node | Delivers fixed 2.8 V; connects to load and 1 μF ceramic output capacitor; auto-discharged via internal 25 Ω path when EN = low. |
| GND (Pin 2) | Power ground reference | Return path for input, output, and quiescent currents; must be low-impedance and tied directly to ePAD for thermal management. |
| ePAD | Exposed thermal pad | Not electrically active; soldered to PCB GND plane to reduce θJA from 250°C/W to ≤120°C/W in optimized layouts. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | 1.0 mm × 1.0 mm DFN package saves >70% board area vs. SOT23-5, enabling dense portable PCB designs. |
| Auto-discharge on disable | 25 Ω internal discharge path reduces VOUT to <100 mV within 1 ms for 10 μF load-eliminates need for external bleed resistors. |
| Low-noise regulation | 175 μVRMS output noise (10 Hz–100 kHz) supports precision ADC references and low-phase-noise clock generation. |
| Wide temperature operation | Specified from –40°C to +125°C junction, qualifying for automotive cabin and industrial edge computing applications. |
| Zero-off-mode current | 0.05 μA shutdown current (typ.) enables multi-year battery life in IoT endpoint sleep states. |
Applications
| Smartphone Power Rail | Medical Sensor Module |
|---|---|
Use Scenario: Supplying 2.8 V to image sensor interface and touch controller in space-constrained smartphone mainboard. IC Role / Device Role / Timing Role: Primary post-regulator delivering stable, low-noise 2.8 V from shared 3.3 V or 3.8 V intermediate rail. Use Value: Auto-discharge ensures rapid VOUT collapse during camera module power-down, preventing ghost touches and sensor latch-up. | Use Scenario: Powering ultra-low-power ECG front-end ASIC and flash memory in wearable cardiac monitor. IC Role / Device Role / Timing Role: Always-on LDO maintaining 2.8 V for real-time data acquisition during deep-sleep cycles. Use Value: 38 μA quiescent current extends coin-cell battery life beyond 12 months; ±2% accuracy guarantees consistent ADC reference scaling. |
| Portable GPS Receiver | Industrial Handheld Scanner |
Use Scenario: Providing clean 2.8 V bias to GNSS RF frontend and baseband processor in handheld navigation device. IC Role / Device Role / Timing Role: Noise-suppressing LDO isolating sensitive RF section from noisy digital supply domains. Use Value: 60 dB PSRR at 1 kHz attenuates switching noise from PMIC DC/DC converters, improving GNSS signal acquisition sensitivity by ≥2 dB. | Use Scenario: Delivering regulated 2.8 V to laser diode driver and barcode decode ASIC in ruggedized warehouse scanner. IC Role / Device Role / Timing Role: High-reliability LDO operating across –25°C to +70°C ambient with thermal shutdown protection. Use Value: 125°C junction-rated thermal shutdown prevents field failure under prolonged sunlight exposure or enclosed enclosure conditions. |
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 resistor (4 MΩ); same 2.8 V output, package, and specs. | Suitable where EN signal may float during processor boot; eliminates need for external pull-down resistor. | Select MIC5504-2.8YMT-TR if system lacks a dedicated EN driver and requires guaranteed disable on unconnected EN. |
| Torex XC6210B282MR-G | 2.8 V fixed output, 300 mA, 160 mV dropout, but no auto-discharge; 1.2 mm × 1.2 mm DFN-4 package; 25 μA IQ. | Lacks VOUT discharge path-requires external circuitry for fast voltage decay; better suited for always-on, non-sequenced systems. | Choose XC6210B282MR-G only when auto-discharge is unnecessary and lower quiescent current is prioritized over board area. |
Compared with MIC5502-2.8YMT-TZ, MIC5504-2.8YMT-TR adds EN pull-down capability without trade-offs in size or performance, while XC6210B282MR-G trades away auto-discharge to achieve lower IQ-making MIC5502-2.8YMT-TZ the optimal balance for sequenced portable power-down.
Availability
MIC5502-2.8YMT-TZ is available at Aetrix Electronics and suitable for smartphone power rails, medical sensor modules, portable GPS receivers, and industrial handheld scanners requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MIC5502-2.8YMT-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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and power management ICs, with global design, manufacturing, and support infrastructure.
The MIC5502 family is part of Microchip's ultra-compact LDO portfolio designed specifically for space-constrained, battery-operated portable electronics demanding high accuracy, low dropout, and intelligent power sequencing features.
FAQ
What is the maximum input voltage rating for MIC5502-2.8YMT-TZ?
The absolute maximum input voltage for MIC5502-2.8YMT-TZ is +6 V, but its specified operating range is +2.5 V to +5.5 V. Exceeding 5.5 V risks permanent damage even briefly, and operation above 6 V violates absolute maximum ratings per DS20006006B-page 3. For reliable 2.8 V output, VIN must remain ≥2.96 V (2.8 V + 160 mV dropout) under 300 mA load. MIC5502-2.8YMT-TZ must never be powered from unregulated 6 V sources without pre-regulation.
Does MIC5502-2.8YMT-TZ require an external pull-down resistor on the EN pin?
No, MIC5502-2.8YMT-TZ does not include an internal EN pull-down resistor-only MIC5503 and MIC5504 variants do. Leaving the EN pin floating on MIC5502-2.8YMT-TZ may cause indeterminate output behavior or unintended turn-on due to noise coupling. A 100 kΩ external pull-down to GND is strongly recommended unless driven actively by a known logic source. This requirement is explicitly stated in DS20006006B-page 9 and page 10.
Can MIC5502-2.8YMT-TZ operate with zero load current?
Yes, MIC5502-2.8YMT-TZ remains stable and in regulation with no load, unlike many legacy LDOs that require minimum load for stability. This is confirmed in Section 4.3 "No-Load Stability" (DS20006006B-page 10), making it suitable for CMOS RAM keep-alive circuits and always-on monitoring subsystems. The 38 μA quiescent current flows regardless of load, and output voltage remains within ±2% accuracy even at 0 mA output.
What is the thermal resistance (θJA) of MIC5502-2.8YMT-TZ in its standard DFN package?
The junction-to-ambient thermal resistance (θJA) for MIC5502-2.8YMT-TZ in the 4-lead 1.0 mm × 1.0 mm TDFN package is 250°C/W under standard JEDEC test conditions (DS20006006B-page 4). This value assumes minimal copper area; actual θJA improves significantly with proper ePAD soldering to a solid GND plane-reducing thermal impedance by up to 50%. For example, at 300 mA load with 3.6 V input, junction temperature rise is ~60°C above ambient, requiring TA ≤65°C for safe operation at TJ = 125°C.
Is MIC5502-2.8YMT-TZ suitable for RF transmitter applications?
No, MIC5502-2.8YMT-TZ is explicitly stated as "not suitable for RF transmitter systems" per DS20006006B-page 10, Section 4.0. While its 60 dB PSRR at 1 kHz helps suppress low-frequency switching noise, it lacks the ultra-low phase noise, high-frequency PSRR (>40 dB at 100 MHz), and RF-specific layout hardening required for PA bias or VCO supply. Use dedicated RF LDOs (e.g., MIC5270 series) instead for transmitter chains.
MIC5502-2.8YMT-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):
- 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-TZ FAQ
1.How can I place an order for MIC5502-2.8YMT-TZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5502-2.8YMT-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 MIC5502-2.8YMT-TZ reliable?
The price and inventory of MIC5502-2.8YMT-TZ 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-TZ is usually 5 days.
3.What payment methods are accepted for MIC5502-2.8YMT-TZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5502-2.8YMT-TZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5502-2.8YMT-TZ?
MIC5502-2.8YMT-TZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5502-2.8YMT-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 MIC5502-2.8YMT-TZ?
For technical support, including MIC5502-2.8YMT-TZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5502-2.8YMT-TZ requirements.
6.How does Aetrix verify that MIC5502-2.8YMT-TZ is sourced from the original manufacturer or authorized distributors?
All MIC5502-2.8YMT-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 MIC5502-2.8YMT-TZ meets industry standards.
7.What is the process for return or replacement of MIC5502-2.8YMT-TZ?
All MIC5502-2.8YMT-TZ units undergo pre-shipment inspection (PSI). If there is an issue with MIC5502-2.8YMT-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 MIC5502-2.8YMT-TZ part is unused and in its original packaging.
Return procedure for MIC5502-2.8YMT-TZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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