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Microchip Technology MIC5302-1.8YMT-TR
- Part No.:
- MIC5302-1.8YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 4-UFDFN Exposed Pad, 4-TMLF®
- Datasheet:
-
MIC5302-1.8YMT-TR.pdf
- Description:
- IC REG LINEAR 1.8V 150MA 4TMLF
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MIC5302-1.8YMT-TR from Micrel is a fixed 1.8V, 150mA ultra-low dropout (ULDO™) CMOS linear regulator in a 4-pin 1.2mm × 1.6mm Thin MLF® package. It delivers 50mV dropout at full load, 120µVRMS output noise, and ±2% initial output accuracy - optimized for RF power stages, camera modules, and imaging sensors in space-constrained portable electronics.
For engineers reviewing the MIC5302-1.8YMT-TR datasheet, MIC5302-1.8YMT-TR pinout, MIC5302-1.8YMT-TR application, or MIC5302-1.8YMT-TR equivalent, key selection criteria include dropout voltage at 150mA, zero-off-mode shutdown current (<2µA), thermal shutdown behavior, ceramic capacitor stability, and compatibility with 2.3V–5.5V input rails in high-density mobile PCB layouts.
Technical Context
The MIC5302-1.8YMT-TR integrates a CMOS pass element with an error amplifier, thermal shutdown, and current-limit circuitry - all operating within a –40°C to +125°C junction temperature range. Its enable input uses active-high CMOS logic with 1.1V minimum high threshold and <1µA leakage.
It achieves stable regulation without minimum load, supports 1µF ceramic output capacitors (X7R/X5R recommended), and maintains 65dB PSRR up to 1kHz. The internal reference and feedback network ensure ±3% total output variation across temperature and line/load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±2% initial accuracy - ensures precise biasing for 1.8V I/O domains and low-voltage image sensors. |
| Max Output Current | 150mA guaranteed - sufficient for RF front-end ICs and CMOS image sensor analog blocks. |
| Dropout Voltage | 50mV at 150mA - enables operation with only 1.85V input, critical for battery-powered systems near end-of-discharge. |
| Ground Current | 85µA typical at full load; <2µA in shutdown - minimizes quiescent drain in always-on subsystems. |
| Output Noise | 120µVRMS (10Hz–100kHz) - preserves signal integrity in noise-sensitive analog/RF supply rails. |
| PSRR | 65dB @ 1kHz - suppresses switching noise from adjacent DC/DC converters feeding shared input rails. |
| Enable Threshold | VIH = 1.1V min; VIL = 0.2V max - compatible with 1.8V GPIO control without level-shifting. |
Pinout & Package
Package: 4-pin 1.2mm × 1.6mm Thin MLF® (MT) with exposed thermal pad (EPAD) internally connected to GND - provides low θJA = 173°C/W and supports high-power-density layout in <2mm² footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable input | Active-high digital control; must be pulled high (>1.1V) to activate regulator; floating state prohibited. |
| 2 - GND | Ground reference | Primary return path for load and quiescent current; connects to EPAD for thermal conduction. |
| 3 - VIN | Input supply | Accepts 2.3V–5.5V; requires ≥1µF low-ESR ceramic bypass capacitor placed adjacent to pin. |
| 4 - VOUT | Regulated output | Delivers stable 1.8V; requires ≥1µF X7R/X5R ceramic capacitor directly at pin for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | 1.92mm² PCB area - 50% smaller than SC-70 and 2mm×2mm MLF®, enabling placement under camera modules or RF shields. |
| Zero-off-mode shutdown | <2µA shutdown current - eliminates standby drain in GPS receivers and PDA suspend states. |
| Ceramic capacitor stability | No minimum ESR requirement - eliminates need for tantalum or aluminum electrolytic, reducing BOM count and board area. |
| Fast turn-on time | 35µs typical - supports rapid power sequencing in multi-rail mobile SoC subsystems. |
| Thermal & current protection | Auto-recovery thermal shutdown and foldback current limit - prevents damage during short-circuit or overtemperature events. |
Applications
| Mobile Phone RF Power Stage | Digital Camera Image Sensor Bias |
|---|---|
Use Scenario: Powers RF power amplifier bias circuits in GSM/UMTS handsets where input voltage sags below 2.5V during transmit bursts. IC Role / Device Role / Timing Role: Low-noise, ultra-low-dropout LDO supplying clean 1.8V to PA driver stage while rejecting switching noise from PMIC buck converters. Use Value: 50mV dropout allows continued regulation down to 1.85V input, extending talk time; 120µVRMS noise prevents AM modulation of transmitted RF carrier. |
Use Scenario: Provides regulated 1.8V supply to analog front-end and column ADC of CMOS image sensors in smartphone rear cameras. IC Role / Device Role / Timing Role: Precision voltage source for sensor analog core, synchronized with frame-readout timing via EN pin control. Use Value: ±2% output accuracy ensures consistent pixel response; fast 35µs turn-on enables per-frame power gating to reduce system-level power consumption. |
| Portable Media Player Audio Codec | GPS Receiver Baseband IC |
Use Scenario: Supplies 1.8V to stereo audio codec's analog section in battery-powered PMPs with tight space constraints. IC Role / Device Role / Timing Role: Low-noise LDO decoupling audio DAC/ADC from noisy digital supply rails, with EN pin tied to system audio-enable signal. Use Value: 120µVRMS noise meets SNR >95dB requirements; 1.2mm×1.6mm footprint fits within narrow PCB margins between display and battery. |
Use Scenario: Powers baseband processor and GNSS correlator in compact GPS modules where ambient temperature exceeds 85°C. IC Role / Device Role / Timing Role: High-temperature-stable LDO delivering 1.8V under continuous operation from 3.3V Li-ion supply. Use Value: Guaranteed operation to +125°C junction temperature; ±3% output variation over –40°C to +125°C ensures consistent correlation engine performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low dropout LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6206P182MR | 1.8V, 150mA, 250mV dropout at 150mA; SOT-23-3 package; no enable pin. | Lacks EN control and thermal shutdown; unsuitable for sequenced or fault-tolerant systems. | Select when board space permits SOT-23 and enable/shutdown functionality is unnecessary. |
| Richtek RT9193-18GB | 1.8V, 300mA, 200mV dropout at 300mA; SOT-23-5 with EN and low-noise mode; 200µVRMS noise. | Higher noise and larger package; higher current capability not needed for 150mA imaging loads. | Select only if >150mA headroom or dual-rail sequencing (EN + PG) is required. |
Compared with XC6206P182MR and RT9193-18GB, the MIC5302-1.8YMT-TR uniquely combines sub-100mV dropout, 120µVRMS noise, 1.2mm×1.6mm footprint, and integrated enable/shutdown in a single RoHS-compliant package - making it optimal for miniaturized, noise-sensitive, and thermally demanding portable imaging and RF applications.
Availability
MIC5302-1.8YMT-TR is available at Aetrix Electronics and suitable for mobile phone RF power stages, digital camera image sensor bias, and GPS receiver baseband ICs requiring stable component supply across automotive-grade temperature ranges and long production lifecycles.
Supply support for MIC5302-1.8YMT-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
Micrel Inc. was a U.S.-based analog and mixed-signal semiconductor company founded in 1978 and acquired by Microchip Technology in 2015. Known for high-performance power management and timing solutions.
The MIC5302-1.8YMT-TR belongs to Micrel's ULDO™ family - engineered specifically for ultra-compact, low-noise, battery-powered portable electronics where minimal dropout, zero-load stability, and ceramic capacitor compatibility are mandatory design requirements.
FAQ
What is the maximum input voltage rating for the MIC5302-1.8YMT-TR?
The MIC5302-1.8YMT-TR has an absolute maximum input voltage of +6V, but its specified operating input range is +2.3V to +5.5V. Exceeding 5.5V may cause permanent damage even if within the absolute maximum rating, as internal protection circuits are not designed for sustained overvoltage operation. Always maintain VIN ≤5.5V in normal use.
Does the MIC5302-1.8YMT-TR require an external pull-up resistor on the EN pin?
Yes - the EN pin of the MIC5302-1.8YMT-TR must never be left floating. A pull-up resistor to VIN (typically 100kΩ) ensures reliable activation when system control signals are inactive. The MIC5302-1.8YMT-TR specifies VIH ≥1.1V for enable, and floating pins risk indeterminate output states due to CMOS input sensitivity.
Can the MIC5302-1.8YMT-TR operate stably with no load connected to VOUT?
Yes - the MIC5302-1.8YMT-TR remains stable and in regulation with zero load, unlike many traditional LDOs. This is explicitly verified in the datasheet and critical for applications like CMOS RAM keep-alive circuits or standby sensor biasing where load current drops to near-zero between active cycles.
What is the thermal resistance (θJA) of the MIC5302-1.8YMT-TR in its standard footprint?
The MIC5302-1.8YMT-TR has a junction-to-ambient thermal resistance (θJA) of 173°C/W when mounted on the recommended minimum footprint layout per the datasheet. This value assumes proper soldering of the EPAD to a thermal plane; inadequate copper area or poor solder voiding will degrade actual thermal performance.
Is the MIC5302-1.8YMT-TR RoHS compliant and lead-free?
Yes - the MIC5302-1.8YMT-TR is supplied in a lead-free (RoHS-compliant) Thin MLF® package, as confirmed in the Ordering Information table and Package Information section of the official Micrel datasheet. The "-TR" suffix denotes tape-and-reel packaging compatible with automated SMT assembly.
MIC5302-1.8YMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 4-UFDFN 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):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.1V @ 150mA
- Current - Output:
- 150mA
- 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)
MIC5302-1.8YMT-TR FAQ
1.How can I place an order for MIC5302-1.8YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5302-1.8YMT-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 MIC5302-1.8YMT-TR reliable?
The price and inventory of MIC5302-1.8YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5302-1.8YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5302-1.8YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5302-1.8YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5302-1.8YMT-TR?
MIC5302-1.8YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5302-1.8YMT-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 MIC5302-1.8YMT-TR?
For technical support, including MIC5302-1.8YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5302-1.8YMT-TR requirements.
6.How does Aetrix verify that MIC5302-1.8YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5302-1.8YMT-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 MIC5302-1.8YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5302-1.8YMT-TR?
All MIC5302-1.8YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5302-1.8YMT-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 MIC5302-1.8YMT-TR part is unused and in its original packaging.
Return procedure for MIC5302-1.8YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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