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Microchip Technology MIC5303-1.5YMT-TR
- Part No.:
- MIC5303-1.5YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 4-VFDFN Exposed Pad, 4-TMLF®
- Datasheet:
-
MIC5303-1.5YMT-TR.pdf
- Description:
- IC REG LINEAR 1.5V 300MA 4TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MIC5303-1.5YMT-TR from Micrel is a fixed 1.5V, 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, enabling stable power for RF-sensitive circuits such as cellular phone front-end modules and camera sensor bias rails.
For engineers reviewing the MIC5303-1.5YMT-TR datasheet, MIC5303-1.5YMT-TR pinout, MIC5303-1.5YMT-TR application, or MIC5303-1.5YMT-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-critical for space-constrained portable designs.
Technical Context
The MIC5303-1.5YMT-TR integrates a CMOS pass element with an error amplifier, reference voltage generator, and quick-start circuit to achieve fast 35µs turn-on time and low ground current (85µA typ). Its architecture supports operation down to 2.3V input while maintaining regulation at 1.5V output across –40°C to +125°C junction temperature.
It features active-high enable control with defined logic thresholds (VIL ≤ 0.2V, VIH ≥ 1.1V), internal thermal shutdown, and current limiting (350–850mA), all implemented without external components. The exposed pad (EPAD) is internally connected to GND for thermal conduction and EMI reduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±2% initial accuracy; ensures precise biasing for low-voltage analog/RF ICs without trimming. |
| Max Output Current | 300mA guaranteed; sufficient for powering baseband processors, image sensors, or RF transceivers in compact handheld devices. |
| Dropout Voltage | 100mV at 300mA; enables regulation from 1.6V input, extending battery runtime in single-cell Li-ion or Li-poly systems. |
| Input Voltage Range | 2.3V to 5.5V; compatible with wide-input DC-DC outputs or direct battery connection in multi-rail portable platforms. |
| Output Noise | 120µVRMS (10Hz–100kHz); minimizes phase noise in RF synthesizers and jitter in high-speed ADC clock supplies. |
| Quiescent Current | 85µA typical; maintains ultra-low system standby power when paired with microcontrollers in always-on sensor nodes. |
| Enable Threshold | VIH ≥ 1.1V, VIL ≤ 0.2V; interfaces directly with 1.8V/3.3V GPIOs without level-shifting in modern SoC-based designs. |
Pinout & Package
Package: 4-pin 1.2mm × 1.6mm Thin MLF® (MT) with exposed thermal pad (EPAD) internally connected to GND. Occupies only 1.92mm² PCB area-50% smaller than SC-70 and 2mm × 2mm MLF® packages.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Active-high enable input | CMOS-compatible control signal; must be pulled high (>1.1V) to activate regulator; floating state causes indeterminate output. |
| 2 - GND | Ground reference and thermal path | Primary return for load current and regulator bias; EPAD soldered to PCB ground plane improves thermal dissipation and reduces EMI. |
| 3 - VIN | Power input supply | Accepts 2.3V–5.5V; requires 1µF low-ESR ceramic bypass capacitor placed adjacent to pin for stability and transient response. |
| 4 - VOUT | Regulated output | Delivers fixed 1.5V ±2%; stable with ≥1µF X7R/X5R ceramic output capacitor; no-load stable for keep-alive applications. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | 1.2mm × 1.6mm Thin MLF® package occupies 1.92mm² PCB area-enables placement near RF ICs with minimal trace inductance. |
| Zero-off-mode shutdown | Draws <2µA when EN = low; eliminates quiescent drain in sleep modes of GPS receivers and wearable sensors. |
| Ceramic-capacitor stability | Stable with ≥1µF X7R/X5R ceramic output capacitors; avoids electrolytic or tantalum parts, reducing board height and aging drift. |
| Low-noise regulation | 120µVRMS output noise and 65dB PSRR at 1kHz; preserves SNR in camera ISP power rails and RF LNA bias networks. |
| Robust protection | Integrated thermal shutdown and current limit (350–850mA); prevents damage during short-circuit or overtemperature events without external circuitry. |
Applications
| Cellular Phone RF Power Amplifier Bias | Digital Camera Image Sensor Core Supply |
|---|---|
Use Scenario: Providing clean, low-noise 1.5V bias to GaAs pHEMT power amplifier stages in 3G/4G handset front-end modules. IC Role / Device Role / Timing Role: Ultra-low-noise LDO delivering stable core voltage under dynamic RF load modulation. Use Value: 120µVRMS noise and 100mV dropout preserve PA efficiency and EVM performance across battery discharge curve. |
Use Scenario: Powering the analog core of CMOS image sensors in smartphone rear cameras requiring tight voltage tolerance and fast transient response. IC Role / Device Role / Timing Role: Fixed-output ULDO supplying regulated 1.5V to sensor pixel array and ADC reference circuitry. Use Value: ±2% accuracy and 35µs turn-on ensure consistent image quality during rapid sensor wake-up and exposure sequencing. |
| Portable Media Player Audio Codec Supply | GPS Receiver Baseband Processor Core |
Use Scenario: Delivering quiet 1.5V power to stereo audio DACs and headphone amplifiers in battery-powered PMPs. IC Role / Device Role / Timing Role: Low-noise linear regulator decoupling digital switching noise from sensitive audio signal paths. Use Value: 65dB PSRR at 1kHz suppresses digital supply ripple, reducing audible hiss and improving THD+N performance. |
Use Scenario: Supplying core voltage to GPS baseband SoCs operating in deep-sleep mode with periodic wake-up bursts. IC Role / Device Role / Timing Role: Enable-controlled LDO providing 1.5V to processor cores only during active navigation intervals. Use Value: <2µA shutdown current extends battery life in location-aware wearables and asset trackers between position fixes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/TT | 150mA max output, 6µA quiescent current, same 1.5V fixed output and SOT-23-5 package. | Limited to lower-current peripherals; insufficient for 300mA camera sensor loads. | Select when ultra-low IQ dominates over output current capability. |
| Torex XC6206P152MR-G | 150mA output, 1µA shutdown current, 1.5V fixed, SOT-25 package; no enable pin. | Requires external enable circuitry; lacks integrated EN control for sequenced power-down. | Choose for cost-sensitive, low-IQ applications where enable functionality is implemented externally. |
Compared with MCP1700T-1502E/TT and XC6206P152MR-G, the MIC5303-1.5YMT-TR uniquely combines 300mA drive, 100mV dropout, and integrated active-high enable in a 1.92mm² footprint-making it optimal for RF and imaging subsystems where size, noise, and controllability are jointly constrained.
Availability
MIC5303-1.5YMT-TR is available at Aetrix Electronics and suitable for cellular phone RF modules, digital camera image sensors, portable media player audio codecs, and GPS receiver baseband processors requiring stable component supply across industrial temperature ranges.
Supply support for MIC5303-1.5YMT-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 analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015. It pioneered high-performance, space-efficient LDO architectures for portable electronics.
The MIC5303 family was designed specifically for ultra-compact, noise-sensitive portable applications-including RF power stages and imaging sensors-where traditional LDOs failed due to size, dropout, or noise limitations.
FAQ
What is the maximum input voltage rating for the MIC5303-1.5YMT-TR?
The MIC5303-1.5YMT-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 violate safety margins defined in the datasheet's Absolute Maximum Ratings table. Always maintain VIN within the operating range for reliable long-term performance of the MIC5303-1.5YMT-TR.
Does the MIC5303-1.5YMT-TR require an external pull-up resistor on the EN pin?
No, the MIC5303-1.5YMT-TR does not require an external pull-up resistor on the EN pin. Its enable input uses CMOS logic with defined thresholds (VIH ≥ 1.1V, VIL ≤ 0.2V), but the pin must never be left floating. A direct connection to a microcontroller GPIO or a dedicated enable rail is recommended. Leaving EN unconnected risks indeterminate output behavior in the MIC5303-1.5YMT-TR.
Can the MIC5303-1.5YMT-TR operate stably with no load connected to VOUT?
Yes, the MIC5303-1.5YMT-TR remains stable and in regulation with zero load current-a feature uncommon among many LDOs. This no-load stability is explicitly verified and supports applications like CMOS RAM keep-alive circuits or standby bias rails. The MIC5303-1.5YMT-TR maintains 1.5V output accuracy and low noise even when delivering 0mA.
What is the thermal resistance (θJA) of the MIC5303-1.5YMT-TR package?
The MIC5303-1.5YMT-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 the minimum recommended footprint. This value assumes proper soldering of the EPAD to a PCB ground plane. Actual θJA improves with larger copper areas and thermal vias, directly impacting maximum ambient temperature capability of the MIC5303-1.5YMT-TR.
Is the MIC5303-1.5YMT-TR RoHS compliant and lead-free?
Yes, the MIC5303-1.5YMT-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 datasheet. The "-TR" suffix denotes tape-and-reel packaging, and the part meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for surface-mount assembly. All units of MIC5303-1.5YMT-TR shipped by Aetrix Electronics comply with RoHS Directive 2011/65/EU.
MIC5303-1.5YMT-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):
- 1.5V
- 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)
MIC5303-1.5YMT-TR FAQ
1.How can I place an order for MIC5303-1.5YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5303-1.5YMT-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 MIC5303-1.5YMT-TR reliable?
The price and inventory of MIC5303-1.5YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5303-1.5YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5303-1.5YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5303-1.5YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5303-1.5YMT-TR?
MIC5303-1.5YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5303-1.5YMT-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 MIC5303-1.5YMT-TR?
For technical support, including MIC5303-1.5YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5303-1.5YMT-TR requirements.
6.How does Aetrix verify that MIC5303-1.5YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5303-1.5YMT-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 MIC5303-1.5YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5303-1.5YMT-TR?
All MIC5303-1.5YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5303-1.5YMT-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 MIC5303-1.5YMT-TR part is unused and in its original packaging.
Return procedure for MIC5303-1.5YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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