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Microchip Technology MIC5303-2.5YMT-TR
- Part No.:
- MIC5303-2.5YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 4-VFDFN Exposed Pad, 4-TMLF®
- Datasheet:
-
MIC5303-2.5YMT-TR.pdf
- Description:
- IC REG LINEAR 2.5V 300MA 4TMLF
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MIC5303-2.5YMT-TR from Micrel is a fixed 2.5V, 300mA ultra-low dropout (ULDO™) CMOS linear regulator in a 4-pin 1.2mm × 1.6mm Thin MLF® package. It delivers 2% initial output accuracy, 100mV dropout at full load, and 120µVRMS output noise-optimized for RF power stages in cellular handsets and camera modules where board space and supply cleanliness are critical.
For engineers reviewing the MIC5303-2.5YMT-TR datasheet, MIC5303-2.5YMT-TR pinout, MIC5303-2.5YMT-TR application, or MIC5303-2.5YMT-TR equivalent, key selection criteria include its 2.3V–5.5V input range, zero-off-mode shutdown (<2µA), thermal/current protection, and ceramic-capacitor stability-essential for portable imaging and low-noise analog subsystems.
Technical Context
The MIC5303-2.5YMT-TR employs a CMOS pass element with error amplifier feedback to maintain regulation across –40°C to +125°C junction temperature. Its architecture enables 35µs turn-on time and supports active-high enable control with defined logic thresholds (VIL ≤ 0.2V, VIH ≥ 1.1V).
It operates with no minimum load requirement and remains stable with ≥1µF ceramic output capacitance. Ground current stays at 85µA typical over 0–300mA load, and internal thermal shutdown activates above +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2% initial accuracy; ensures precise biasing for 2.5V analog sensors or RF ICs without external feedback. |
| Max Output Current | 300mA guaranteed; sufficient for powering camera image sensors or baseband processors in compact handhelds. |
| Dropout Voltage | 100mV at 300mA; enables operation from 2.6V input when VOUT = 2.5V-critical for battery-powered systems near end-of-discharge. |
| Output Noise | 120µVRMS (10Hz–100kHz); minimizes phase noise in RF front-ends and jitter in clocked imaging pipelines. |
| Quiescent Current | 85µA typical; maintains efficiency in always-on subsystems like GPS receivers or standby camera modules. |
| Enable Control | Active-high EN pin with <2µA shutdown current; allows system-level power sequencing and zero-power off-state. |
| Input Voltage Range | 2.3V to 5.5V; compatible with single-cell Li-ion (2.7–4.2V), Li-polymer, or regulated 3.3V/5V rails. |
Pinout & Package
Package: 4-pin 1.2mm × 1.6mm Thin MLF® (MT) with exposed thermal pad (EPAD) internally connected to GND. Total footprint: 1.92mm²-50% smaller than SC-70 and 2mm × 2mm MLF® packages.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable input | CMOS-compatible active-high control; must be pulled high (>1.1V) to enable output; floating state prohibited. |
| 2 - GND | Ground reference | Primary return path for load and quiescent current; connects to EPAD for thermal conduction. |
| 3 - VIN | Supply input | Accepts 2.3–5.5V input; requires ≥1µF low-ESR ceramic bypass capacitor to ground for stability. |
| 4 - VOUT | Regulated output | Delivers fixed 2.5V ±2%; stable with ≥1µF X7R/X5R ceramic output capacitor; no minimum load required. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | 1.2mm × 1.6mm Thin MLF® package occupies only 1.92mm² PCB area-enables placement adjacent to space-constrained camera modules. |
| Low-noise regulation | 120µVRMS output noise ensures clean power for RF transceivers and high-resolution ADCs without added filtering. |
| Zero-off-mode shutdown | Draws <2µA when EN = low-preserves battery life in sleep modes of portable media players and digital cameras. |
| Ceramic-capacitor stability | Stable with ≥1µF X7R/X5R ceramic output capacitors; eliminates need for bulky tantalum or electrolytic alternatives. |
| Full-temperature accuracy | ±3% output voltage variation over –40°C to +125°C-supports automotive-grade ambient operation in rear-view camera systems. |
Applications
| Cellular Phone RF Power Stage | Digital Camera Image Sensor Bias |
|---|---|
Use Scenario: Powers RF power amplifier (PA) bias circuitry in GSM/UMTS handsets operating from single-cell Li-ion. IC Role / Device Role / Timing Role: Ultra-low-noise LDO delivering stable 2.5V to PA driver stage, minimizing AM-to-PM distortion. Use Value: 120µVRMS noise and 100mV dropout preserve PA efficiency and EVM performance across battery discharge cycle. |
Use Scenario: Supplies analog core voltage to CMOS image sensor in smartphone rear cameras. IC Role / Device Role / Timing Role: Fixed-output LDO providing clean 2.5V bias to sensor pixel array and analog signal chain. Use Value: No-load stability and ±2% accuracy ensure consistent sensor gain and dark-current performance during preview mode. |
| Portable GPS Receiver Front-End | PDA Baseband Processor Core |
Use Scenario: Powers low-noise amplifier (LNA) and downconverter in handheld GPS modules. IC Role / Device Role / Timing Role: Low-dropout regulator supplying 2.5V to RF front-end ICs with minimal supply-induced phase noise. Use Value: 65dB ripple rejection up to 1kHz suppresses switching noise from nearby DC/DC converters. |
Use Scenario: Delivers core voltage to ARM-based baseband processor in legacy PDAs with tight thermal constraints. IC Role / Device Role / Timing Role: High-accuracy LDO supporting processor I/O and memory interface at 2.5V. Use Value: 85µA quiescent current and thermal shutdown protect against overheating in sealed plastic enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6206P252MR | 2.5V fixed, 150mA output, 150mV dropout at 150mA, SOT-25 package (2.9mm²) | Limited to lower current; larger footprint; suitable for non-RF sensor bias where noise <200µVRMS is acceptable. | Select when cost sensitivity outweighs RF noise and board area constraints. |
| Analog Devices ADP160ACBZ-2.5-R7 | 2.5V fixed, 150mA, 195mV dropout at 150mA, 5-pin TSOT-23; 27µVRMS noise | Lower noise but half the current rating; requires different pinout and layout; not drop-in replaceable. | Choose only if ultra-low noise dominates over current capability and PCB real estate. |
Compared with MIC5303-2.5YMT-TR, the XC6206P252MR trades current and size for cost, while the ADP160ACBZ-2.5-R7 prioritizes noise reduction at the expense of output capability and package compatibility-neither offers the same combination of 300mA, 100mV dropout, and 1.92mm² footprint.
Availability
MIC5303-2.5YMT-TR is available at Aetrix Electronics and suitable for cellular phone RF power stages, digital camera image sensor bias, and portable GPS receiver front-ends requiring stable component supply, RoHS-compliant packaging, and long-term industrial availability.
Supply support for MIC5303-2.5YMT-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 power management, timing, and analog ICs before its acquisition by Microchip Technology in 2015. Known for high-performance LDOs and clock solutions.
The MIC5303 family was designed specifically for space-constrained, noise-sensitive portable electronics-including cellular handsets, camera modules, and PMPs-where ultra-small size, low dropout, and ultra-low noise were mandatory.
FAQ
What is the maximum input voltage rating for the MIC5303-2.5YMT-TR?
The MIC5303-2.5YMT-TR has an absolute maximum input voltage rating of +6V. However, its specified operating input range is +2.3V to +5.5V. Exceeding 5.5V may cause permanent damage or unpredictable behavior, even if below the 6V absolute limit. Always operate within the 2.3–5.5V range for reliable performance and longevity of the MIC5303-2.5YMT-TR.
Does the MIC5303-2.5YMT-TR require an external output capacitor, and what type is recommended?
Yes, the MIC5303-2.5YMT-TR requires a minimum 1µF output capacitor for stability. X7R or X5R dielectric ceramic capacitors are explicitly recommended due to their stable capacitance over temperature (±15% for X7R). Y5V or Z5U types are discouraged-their capacitance can drop >50% over temperature, risking instability. The MIC5303-2.5YMT-TR is optimized for 1µF and does not benefit significantly from larger values.
Can the MIC5303-2.5YMT-TR operate with zero load current?
Yes, the MIC5303-2.5YMT-TR remains stable and in regulation with no load-unlike many traditional LDOs. This feature is essential for applications such as CMOS RAM keep-alive circuits or standby sensor biasing. The MIC5303-2.5YMT-TR maintains 2.5V output accuracy and low noise even at 0mA load, verified across –40°C to +125°C.
What is the thermal resistance (θJA) of the MIC5303-2.5YMT-TR package?
The MIC5303-2.5YMT-TR in its 4-pin 1.2mm × 1.6mm Thin MLF® package has a junction-to-ambient thermal resistance (θJA) of 173°C/W under standard minimum footprint conditions. This value assumes proper PCB copper pour connected to the EPAD. At 300mA and 2.5V output from a 3.6V input, power dissipation is ~0.24W, allowing a maximum ambient temperature of ~83°C before thermal shutdown activates.
Is the MIC5303-2.5YMT-TR RoHS compliant and lead-free?
Yes, the MIC5303-2.5YMT-TR is supplied in a lead-free (RoHS-compliant) Thin MLF® package, as confirmed in the official Micrel ordering information table. The "YMT" suffix denotes Pb-free finish, and the device meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) requirements. All MIC5303-2.5YMT-TR units distributed by Aetrix Electronics carry full RoHS documentation and traceability.
MIC5303-2.5YMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 4-VFDFN Exposed Pad, 4-TMLF®
- 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.2V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 120 µA
- Current - Supply (Max):
- -
- PSRR:
- 65dB ~ 42dB (1kHz ~ 20kHz)
- 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-TMLF® (1.2x1.6)
MIC5303-2.5YMT-TR FAQ
1.How can I place an order for MIC5303-2.5YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5303-2.5YMT-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 MIC5303-2.5YMT-TR reliable?
The price and inventory of MIC5303-2.5YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5303-2.5YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5303-2.5YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5303-2.5YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5303-2.5YMT-TR?
MIC5303-2.5YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5303-2.5YMT-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 MIC5303-2.5YMT-TR?
For technical support, including MIC5303-2.5YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5303-2.5YMT-TR requirements.
6.How does Aetrix verify that MIC5303-2.5YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5303-2.5YMT-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 MIC5303-2.5YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5303-2.5YMT-TR?
All MIC5303-2.5YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5303-2.5YMT-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 MIC5303-2.5YMT-TR part is unused and in its original packaging.
Return procedure for MIC5303-2.5YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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