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Microchip Technology MIC5514-1.8YMT-TR
- Part No.:
- MIC5514-1.8YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-UFDFN Exposed Pad
- Datasheet:
-
MIC5514-1.8YMT-TR.pdf
- Description:
- IC REG LINEAR 1.8V 300MA 6TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,192
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Product details
Overview
MIC5514-1.8YMT-TR from Micrel is a fixed-output 1.8V, 300mA low-dropout linear regulator with active-high enable, internal 4MΩ EN pull-down resistor, and output auto-discharge circuitry. It operates from 2.5V to 5.5V input, delivers ±1% initial accuracy, 160mV dropout at full load, and draws only 38µA ground current at light load - ideal for battery-powered portable electronics requiring fast turn-on and safe output discharge during shutdown.
For engineers reviewing the MIC5514-1.8YMT-TR datasheet, MIC5514-1.8YMT-TR pinout, MIC5514-1.8YMT-TR application, or MIC5514-1.8YMT-TR equivalent, key selection criteria include its 1.6mm × 1.6mm Thin DFN package, guaranteed 300mA output, zero-off-mode shutdown current (<1µA), stability with 1µF ceramic capacitors, and EN floating-safety feature unique to the MIC5514 variant.
Technical Context
The MIC5514-1.8YMT-TR integrates a CMOS-based LDO control architecture with an internal N-channel pass transistor, enabling low quiescent current and tight line/load regulation. Its enable logic includes a factory-trimmed 4MΩ pull-down resistor on the EN pin, ensuring deterministic disable behavior without external components - critical for processor boot sequencing where control signals may float.
It features an integrated 25Ω NFET auto-discharge switch activated when EN = LOW, rapidly draining output capacitance to prevent residual voltage hold-up. Thermal protection and current limiting are built-in, with junction temperature rated from –40°C to +125°C and θJA = 92.4°C/W in the 6-pin Thin DFN package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±1% initial accuracy - ensures stable core/logic rail for 1.8V microcontrollers and memory interfaces. |
| Max Output Current | 300mA guaranteed - supports moderate-power peripherals like sensors, RF transceivers, or display drivers. |
| Dropout Voltage | 160mV at 300mA - enables operation down to VIN = 1.96V, extending battery life in single-cell Li-ion or Li-poly systems. |
| Ground Current | 38µA typical at light load; <1µA in shutdown - minimizes standby power loss in always-on subsystems. |
| Input Voltage Range | 2.5V to 5.5V - compatible with common battery chemistries (Li-ion, Li-poly, 3×AA) and regulated 3.3V/5V rails. |
| Capacitor Stability | Stable with ≥1µF ceramic output capacitor - eliminates need for tantalum or large electrolytics, reducing BOM cost and footprint. |
| Enable Logic | Active-high EN with internal 4MΩ pull-down - prevents false turn-on during power-up; no external pull-down required. |
| Auto-Discharge | 25Ω internal discharge path when disabled - clears VOUT within microseconds, avoiding latch-up or back-powering in multi-rail systems. |
Pinout & Package
Package: 6-pin 1.6mm × 1.6mm Thin DFN (MT) with exposed thermal pad (ePad); RoHS-compliant, halogen-free, NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable input | Active-high digital control; internal 4MΩ pull-down ensures safe default-OFF state if left unconnected. |
| 2, 5 - NC | No connect | Not internally bonded; must remain unconnected per design - no routing or soldering required. |
| 3 - VIN | Input supply | Accepts 2.5V–5.5V; requires 1µF ceramic bypass capacitor to GND for stability and noise suppression. |
| 4 - VOUT | Regulated output | Delivers fixed 1.8V; auto-discharged via 25Ω internal FET when EN = LOW. |
| 6 - GND | Power ground | Primary return path for VIN, VOUT, and internal circuitry; must be low-impedance connection. |
| ePad | Thermal pad | Exposed copper heatsink; must be soldered to PCB GND plane for thermal performance and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-off-mode shutdown | Draws <1µA total current when disabled - enables ultra-low-power sleep modes in wearables and IoT edge nodes. |
| EN pull-down resistor | Factory-integrated 4MΩ resistor eliminates external component count and improves boot reliability in embedded processors. |
| Fast turn-on time | 50–125µs output rise with 1µF capacitor - meets timing requirements for dynamic power sequencing in mobile SoCs. |
| Low-noise regulation | 175µVRMS output noise (10Hz–100kHz) - suitable for noise-sensitive analog circuits and ADC reference supplies. |
| Full fault protection | Integrated thermal shutdown and current limiting - prevents damage during overload or short-circuit conditions without external circuitry. |
Applications
| Smartphones | Portable Medical Sensors |
|---|---|
Use Scenario: Powering 1.8V I/O banks and camera sensor interfaces during active capture mode with rapid enable/disable cycling. IC Role / Device Role / Timing Role: Primary low-noise, fast-response LDO supplying regulated 1.8V to image signal processors and MIPI interfaces. Use Value: Auto-discharge prevents back-powering of sensor modules during sleep, while 160mV dropout extends usable battery voltage range by >100mV. | Use Scenario: Providing stable 1.8V bias to low-power biosignal amplifiers and ADC front-ends in handheld ECG or pulse oximeters. IC Role / Device Role / Timing Role: Precision voltage source for analog signal chain; zero-off-mode minimizes battery drain during patient monitoring standby. Use Value: ±1% output accuracy ensures consistent gain calibration across temperature; 175µVRMS noise avoids SNR degradation in sub-µV biomedical measurements. |
| Wearable Fitness Trackers | Industrial Handheld Terminals |
Use Scenario: Supplying 1.8V to Bluetooth LE SoC peripherals and motion sensor hubs during intermittent activity bursts. IC Role / Device Role / Timing Role: Efficient, compact LDO enabling duty-cycled power delivery with sub-100µs wake-up latency. Use Value: 38µA quiescent current extends coin-cell battery life beyond 6 months; 1.6mm × 1.6mm footprint saves critical PCB area. | Use Scenario: Regulating 1.8V for FPGA configuration I/O banks and secure element interfaces in ruggedized field devices. IC Role / Device Role / Timing Role: Robust, thermally managed LDO operating continuously across –40°C to +85°C ambient with no derating. Use Value: 125°C max junction rating and 92.4°C/W θJA allow full 300mA output in confined enclosures; EN pull-down prevents spurious startup during cold boot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1826-1802E/DB | Fixed 1.8V, 300mA, but no EN pull-down; requires external 100kΩ pull-down for floating-safe operation. | Lacks auto-discharge; external discharge circuit needed for same safety profile. | Choose when board space allows discrete EN conditioning and discharge FET. |
| Torex XC6219B182MR-G | 1.8V, 300mA, includes EN pull-down and auto-discharge, but uses SOT-25 package (2.9mm × 2.8mm). | Same functional behavior, but 2.3× larger footprint and higher θJA (200°C/W). | Choose only if DFN assembly capability is unavailable and thermal margin permits larger package. |
Compared with MCP1826-1802E/DB and XC6219B182MR-G, the MIC5514-1.8YMT-TR uniquely combines 1.6mm × 1.6mm footprint, integrated EN pull-down, and 25Ω auto-discharge in a single monolithic solution - reducing component count, PCB area, and thermal resistance simultaneously.
Availability
MIC5514-1.8YMT-TR is available at Aetrix Electronics and suitable for smartphones, portable medical sensors, wearable fitness trackers, and industrial handheld terminals requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC5514-1.8YMT-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 semiconductor company specializing in high-performance analog and mixed-signal ICs, acquired by Microchip Technology in 2015. Known for innovation in power management and timing solutions.
The MIC55xx family was designed specifically for space-constrained, battery-operated portable electronics needing ultra-small, low-quiescent-current LDOs with robust enable control and safe discharge behavior.
FAQ
What is the maximum input voltage rating for the MIC5514-1.8YMT-TR?
The MIC5514-1.8YMT-TR has an absolute maximum input voltage (VIN) rating of 6V, but its recommended operating input voltage range is 2.5V to 5.5V. Exceeding 6V may cause permanent damage. For reliable operation in 5V systems, ensure transient spikes remain below this limit using appropriate input filtering.
Does the MIC5514-1.8YMT-TR require an external pull-down resistor on the EN pin?
No - the MIC5514-1.8YMT-TR includes a factory-trimmed 4MΩ internal pull-down resistor on the EN pin, ensuring the device remains disabled when the pin is left floating. This eliminates the need for external components and improves system reliability during processor boot-up sequences.
Can the MIC5514-1.8YMT-TR operate stably with less than 1µF output capacitance?
No - the MIC5514-1.8YMT-TR is characterized and guaranteed stable only with ≥1µF ceramic output capacitance. Using smaller values risks oscillation or poor transient response. X5R or X7R dielectrics are recommended; Y5V types are not advised due to severe capacitance loss over temperature.
What is the typical ground current of the MIC5514-1.8YMT-TR at 300mA load?
The MIC5514-1.8YMT-TR draws 42µA typical ground current at 300mA load, as specified in the Electrical Characteristics table. This low quiescent current contributes to high efficiency at full load and enables >99% power delivery efficiency in typical 3.3V-to-1.8V conversion scenarios.
Is the MIC5514-1.8YMT-TR pin-compatible with the MIC5512-1.8YMT-TR?
Yes - both MIC5514-1.8YMT-TR and MIC5512-1.8YMT-TR share identical 6-pin 1.6mm × 1.6mm Thin DFN package, pinout, and electrical connections. The only functional difference is the presence of the internal EN pull-down resistor in the MIC5514 variant; otherwise, they are mechanically and electrically interchangeable.
MIC5514-1.8YMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 6-UFDFN 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):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.38V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 55 µA
- Current - Supply (Max):
- 65 µA
- PSRR:
- 65dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TDFN (1.6x1.6)
MIC5514-1.8YMT-TR FAQ
1.How can I place an order for MIC5514-1.8YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5514-1.8YMT-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 MIC5514-1.8YMT-TR reliable?
The price and inventory of MIC5514-1.8YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5514-1.8YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5514-1.8YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5514-1.8YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5514-1.8YMT-TR?
MIC5514-1.8YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5514-1.8YMT-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 MIC5514-1.8YMT-TR?
For technical support, including MIC5514-1.8YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5514-1.8YMT-TR requirements.
6.How does Aetrix verify that MIC5514-1.8YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5514-1.8YMT-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 MIC5514-1.8YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5514-1.8YMT-TR?
All MIC5514-1.8YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5514-1.8YMT-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 MIC5514-1.8YMT-TR part is unused and in its original packaging.
Return procedure for MIC5514-1.8YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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