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Microchip Technology MIC5303-2.8YMT-TR
- Part No.:
- MIC5303-2.8YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 4-VFDFN Exposed Pad, 4-TMLF®
- Datasheet:
-
MIC5303-2.8YMT-TR.pdf
- Description:
- IC REG LINEAR 2.8V 300MA 4TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:4,793
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Product details
Overview
MIC5303-2.8YMT-TR from Micrel is a fixed-output 2.8V, 300mA ultra-low dropout CMOS linear regulator in a 4-pin 1.2mm × 1.6mm Thin MLF® package. It delivers 100mV dropout at full load, 120µVRMS output noise, and ±2% initial output accuracy-designed for RF power stages in cellular handsets and camera modules where board area and noise sensitivity are critical.
For engineers reviewing the MIC5303-2.8YMT-TR datasheet, MIC5303-2.8YMT-TR pinout, MIC5303-2.8YMT-TR application, or MIC5303-2.8YMT-TR equivalent, key selection criteria include dropout voltage at 300mA, thermal performance in ultra-small footprint, enable-controlled zero-off-mode current (<2µA), and stability with 1µF ceramic output capacitors.
Technical Context
The MIC5303-2.8YMT-TR implements a CMOS-based LDO architecture with internal error amplifier, reference, thermal shutdown, and current limit circuitry. Its active-high EN pin controls quick-start operation (35µs turn-on time) and enables true zero-current shutdown mode.
It operates across 2.3V–5.5V input range while maintaining regulation down to 100mV VIN–VOUT differential at 300mA. The device is internally compensated and stable with 1µF X7R/X5R ceramic output capacitors without requiring ESR tuning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V ±2% initial accuracy; ensures precise biasing for 2.8V-specified RF ICs and image sensors. |
| Max Output Current | 300mA guaranteed; supports high-pulse-current loads like camera flash drivers and RF power amplifiers. |
| Dropout Voltage | 100mV at 300mA; enables operation from 2.9V supply in battery-powered systems with minimal headroom loss. |
| Ground Current | 85µA typical at full load; minimizes quiescent power draw in always-on subsystems such as GPS receivers. |
| Output Noise | 120µVRMS (10Hz–100kHz); meets stringent noise requirements for analog front-ends in imaging and RF signal chains. |
| Enable Threshold | VIL ≤ 0.2V, VIH ≥ 1.1V; compatible with standard 1.8V/3.3V logic interfaces without level-shifting. |
| Thermal Range | –40°C to +125°C junction temperature; qualified for automotive cabin and industrial portable equipment environments. |
Pinout & Package
The MIC5303-2.8YMT-TR is housed in a Pb-free, 4-pin 1.2mm × 1.6mm Thin MLF® package with exposed thermal pad (EPAD) internally connected to GND. This ultra-compact footprint occupies only 1.92mm² PCB area-50% smaller than SC-70 and 2mm × 2mm MLF® alternatives.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Active-high enable input | Drives regulator ON/OFF; must be pulled high or low-floating state causes indeterminate output behavior. |
| 2 - GND | Power ground reference | Return path for load and quiescent current; EPAD connection enhances thermal dissipation and noise immunity. |
| 3 - VIN | Input supply terminal | Accepts 2.3V–5.5V; requires 1µF low-ESR ceramic bypass capacitor placed close to pin for stability. |
| 4 - VOUT | Regulated output terminal | Delivers stable 2.8V; designed for direct connection to 1µF ceramic output capacitor without series resistance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | 1.2mm × 1.6mm Thin MLF® package reduces PCB area by 50% vs. SC-70-critical for space-constrained mobile camera modules. |
| Zero-off-mode current | ≤2µA shutdown current enables true power gating in battery-backed subsystems like real-time clock keep-alive circuits. |
| Ceramic-capacitor stability | Stable with ≥1µF X7R/X5R ceramic output capacitors-eliminates need for tantalum or aluminum electrolytics and associated ESR constraints. |
| Low-noise regulation | 120µVRMS output noise preserves SNR in analog signal paths of image sensors and RF transceivers. |
| Fast turn-on response | 35µs typical enable-to-VOUT rise time supports dynamic power sequencing in multi-rail portable devices. |
Applications
| Cellular Phone RF Power Stage | Digital Camera Image Sensor Bias |
|---|---|
|
Use Scenario: Powers RF power amplifier (PA) in GSM/WCDMA/LTE handset front-end where supply ripple directly impacts adjacent-channel leakage ratio (ACLR). IC Role / Device Role / Timing Role: Low-noise, fast-response LDO providing clean 2.8V bias to PA under pulsed 300mA load conditions. Use Value: 100mV dropout enables efficient use of declining Li-ion battery voltage; 120µVRMS noise prevents degradation of RF spectral purity. |
Use Scenario: Supplies analog core voltage to CMOS image sensor in smartphone rear camera module during active exposure and readout phases. IC Role / Device Role / Timing Role: Precision 2.8V regulator delivering stable bias independent of load transients from pixel array switching. Use Value: ±2% output accuracy maintains consistent sensor gain calibration; 35µs turn-on supports rapid camera wake-up from sleep mode. |
| Portable GPS Receiver Front-End | USB PC Camera Power Management |
|
Use Scenario: Provides low-noise 2.8V supply to GPS RF frontend IC (LNA/mixer) in handheld navigation devices operating from single-cell Li-ion. IC Role / Device Role / Timing Role: Ultra-low-noise LDO isolating sensitive GNSS receiver chain from noisy digital subsystems on shared PCB. Use Value: 65dB PSRR at 1kHz rejects digital switching noise; thermal shutdown protects against sustained overloads in sealed enclosures. |
Use Scenario: Powers USB-connected HD webcam ASIC and image sensor in desktop/laptop accessory applications with tight thermal budgets. IC Role / Device Role / Timing Role: Compact-area LDO enabling dual-role USB power delivery (bus-powered) and local regulation for analog video blocks. Use Value: 1.92mm² footprint allows placement near sensor die; –40°C to +125°C rating supports operation in unventilated USB hubs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6206P282MR | 2.8V, 150mA, SOT-23-3 package; higher dropout (200mV @ 150mA); no enable pin. | Limited to lower-current, non-sequenced applications; unsuitable for 300mA RF PA loads or logic-controlled shutdown. | Select when cost-sensitive, low-complexity 2.8V bias is needed and enable control or >200mA load is not required. |
| Richtek RT9193-28GB | 2.8V, 300mA, SOT-23-5 package; 250mV dropout @ 300mA; 220µVRMS noise; enable pin present. | Higher dropout and noise reduce efficiency and RF performance in battery-critical or noise-sensitive designs. | Consider only if Thin MLF® footprint is unavailable and thermal derating to <200mA is acceptable. |
Compared with XC6206P282MR and RT9193-28GB, the MIC5303-2.8YMT-TR uniquely combines 300mA capability, 100mV dropout, 120µVRMS noise, and ultra-small 1.2mm × 1.6mm footprint-making it the only option qualified for high-performance, space-constrained RF and imaging power rails.
Availability
MIC5303-2.8YMT-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 across extended temperature ranges and long production lifecycles.
Supply support for MIC5303-2.8YMT-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
Micrel Inc. was a U.S.-based semiconductor company specializing in analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015. It pioneered high-performance, ultra-small-footprint LDO regulators for portable electronics.
The MIC5303-2.8YMT-TR belongs to Micrel's ULDO™ family-engineered specifically for noise-sensitive, space-constrained applications in mobile communications and imaging, emphasizing minimal dropout, ultra-low noise, and zero-off-mode current.
FAQ
What is the maximum input voltage for the MIC5303-2.8YMT-TR?
The MIC5303-2.8YMT-TR supports an absolute maximum input voltage of +6V, but its recommended operating range is +2.3V to +5.5V. Exceeding 5.5V may trigger internal protection or cause reliability issues. For optimal performance in battery-powered systems, VIN should remain within 2.3V–5.5V, especially when delivering 300mA at 2.8V output.
Does the MIC5303-2.8YMT-TR require an external pull-up resistor on the EN pin?
No, the MIC5303-2.8YMT-TR does not require an external pull-up on EN-but the pin must never be left floating. A direct connection to logic-high (e.g., 1.8V or 3.3V rail) or logic-low (GND) is required. Floating EN can cause erratic output behavior due to CMOS input sensitivity; internal pull-up/pull-down is not provided.
Can the MIC5303-2.8YMT-TR operate stably with a 0.47µF ceramic output capacitor?
No-the MIC5303-2.8YMT-TR requires a minimum 1.0µF ceramic output capacitor (X7R/X5R dielectric) for guaranteed stability. Using 0.47µF violates the design specification and risks high-frequency oscillation, especially under load transients. Performance is optimized at exactly 1.0µF; larger values do not improve stability or transient response.
What is the thermal resistance (θJA) of the MIC5303-2.8YMT-TR package?
The MIC5303-2.8YMT-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 the recommended minimum footprint layout. This value assumes proper PCB copper pour connected to the EPAD; inadequate thermal land reduces effective heat dissipation and lowers safe ambient operating temperature.
Is the MIC5303-2.8YMT-TR RoHS compliant and lead-free?
Yes, the MIC5303-2.8YMT-TR is manufactured in a Pb-free (RoHS-compliant) Thin MLF® package per Micrel's ordering information. The "YMT" suffix explicitly denotes lead-free finish, and the device meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3) requirements for surface-mount assembly.
MIC5303-2.8YMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 4-VFDFN Exposed Pad, 4-TMLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 0.2V @ 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)
MIC5303-2.8YMT-TR FAQ
1.How can I place an order for MIC5303-2.8YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5303-2.8YMT-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 MIC5303-2.8YMT-TR reliable?
The price and inventory of MIC5303-2.8YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5303-2.8YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5303-2.8YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5303-2.8YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5303-2.8YMT-TR?
MIC5303-2.8YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5303-2.8YMT-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 MIC5303-2.8YMT-TR?
For technical support, including MIC5303-2.8YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5303-2.8YMT-TR requirements.
6.How does Aetrix verify that MIC5303-2.8YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5303-2.8YMT-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 MIC5303-2.8YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5303-2.8YMT-TR?
All MIC5303-2.8YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5303-2.8YMT-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 MIC5303-2.8YMT-TR part is unused and in its original packaging.
Return procedure for MIC5303-2.8YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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