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Microchip Technology MIC5512-2.8YMT-TR
- Part No.:
- MIC5512-2.8YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-UFDFN Exposed Pad
- Datasheet:
-
MIC5512-2.8YMT-TR.pdf
- Description:
- IC REG LINEAR 2.8V 300MA 6TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,193
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Product details
Overview
MIC5512-2.8YMT from Micrel is a fixed-output 2.8V, 300mA low-dropout linear regulator in a 6-pin 1.6mm × 1.6mm Thin DFN package, designed for power management in space-constrained portable electronics. It delivers ±1% initial output accuracy, 160mV dropout at full load, and ultra-low 38µA ground current in active mode - enabling efficient battery-powered operation in smartphones, medical wearables, and GPS modules.
For engineers reviewing the MIC5512-2.8YMT datasheet, MIC5512-2.8YMT pinout, MIC5512-2.8YMT application, or MIC5512-2.8YMT equivalent, key selection criteria include guaranteed 300mA output with auto-discharge functionality, compatibility with 1µF ceramic output capacitors, and operation across –40°C to +125°C junction temperature range without external components.
Technical Context
The MIC5512-2.8YMT integrates a CMOS-based pass element and internal voltage reference to achieve stable regulation under dynamic load conditions. Its enable input is active-high with no internal pull-down (requires external logic control), and it activates an internal 25Ω discharge FET when disabled - eliminating residual output voltage hold-up.
This LDO operates within 2.5V–5.5V input range and maintains regulation down to 160mV VIN–VOUT differential at 300mA. It achieves 65dB PSRR at 1kHz and exhibits <40mV load regulation across 100µA–300mA, supporting noise-sensitive analog and RF subsystems in portable designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V ±1% initial accuracy - ensures precise rail generation for 2.8V I/O or core logic without external feedback. |
| Max Output Current | 300mA guaranteed - supports moderate-power microcontrollers, sensors, and RF transceivers without thermal derating in standard layouts. |
| Dropout Voltage | 160mV at 300mA - enables operation from 3.0V input (e.g., single Li-ion cell post-regulation) while maintaining 2.8V output. |
| Ground Current | 38µA typical at 100µA load - minimizes quiescent power loss in always-on subsystems like real-time clocks or wake-up circuits. |
| Enable Function | Active-high EN pin with no internal pull-down - requires explicit logic-level drive; floating EN causes indeterminate output state. |
| Auto-Discharge | 25Ω internal discharge FET activated when EN = low - rapidly drains output capacitance to prevent back-powering or latch-up in multi-rail systems. |
| Capacitor Stability | Stable with ≥1µF ceramic output capacitor (X5R/X7R) - eliminates need for tantalum or electrolytic capacitors, reducing board area and cost. |
Pinout & Package
Package: 6-pin 1.6mm × 1.6mm Thin DFN (MT) with exposed thermal pad (ePad); RoHS-compliant, halogen-free mold compound, NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable input | CMOS-compatible active-high control; must be driven - floating state invalid; no internal pull-down (unlike MIC5514). |
| 2, 5 - NC | No connect | Internally unconnected; PCB pads may be omitted or left unconnected per layout guidelines. |
| 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 2.8V; internally discharged via 25Ω FET when EN = low to clear residual charge. |
| 6 - GND | Power ground | Primary return path for input/output currents; must be low-impedance connection to system ground plane. |
| ePad | Exposed thermal pad | Electrically and thermally connected to GND; mandatory for thermal performance and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | 1.6mm × 1.6mm Thin DFN package - saves >60% board area vs. SOT-23, critical for slim mobile and wearable PCBs. |
| Zero-off-mode current | 0.05µA shutdown current - enables true power gating in battery-backed systems without leakage concerns. |
| Fast turn-on time | 50µs typical (COUT = 1µF, IOUT = 150mA) - supports rapid power sequencing in multi-rail processors and FPGA configurations. |
| Thermal protection | Integrated thermal shutdown - prevents damage during sustained overload or poor heatsinking in compact enclosures. |
| Load transient response | <40mV output deviation for 100µA ↔ 300mA step - maintains clean supply during MCU wake/sleep transitions. |
Applications
| Smartphone Power Rail | Portable Medical Sensor |
|---|---|
|
Use Scenario: Providing stable 2.8V supply to camera module I/O interface and flash memory in smartphone mainboard. IC Role / Device Role / Timing Role: Primary LDO for 2.8V auxiliary rail; sequenced after main 3.3V domain using EN signal from PMIC. Use Value: 160mV dropout allows direct use of partially discharged Li-ion (3.0V min), extending battery runtime by ~8% over higher-VDO alternatives. |
Use Scenario: Powering optical heart-rate sensor and BLE radio in wrist-worn health monitor. IC Role / Device Role / Timing Role: Always-on LDO for sensor biasing; enabled continuously during measurement, disabled during deep-sleep cycles. Use Value: 38µA ground current and 0.05µA shutdown current minimize average power draw, enabling >7-day battery life on coin cell. |
| GPS/GLONASS Receiver | Industrial Handheld Scanner |
|
Use Scenario: Supplying 2.8V to GNSS baseband IC and RF front-end in automotive-grade navigation device. IC Role / Device Role / Timing Role: Low-noise local regulator decoupled from noisy 5V system bus; PSRR >65dB suppresses switching noise from DC/DC converters. Use Value: Stable 2.8V rail ensures consistent ADC reference and oscillator performance, improving position fix accuracy by <2m CEP. |
Use Scenario: Delivering regulated 2.8V to barcode imager ASIC and touch controller in ruggedized warehouse scanner. IC Role / Device Role / Timing Role: Secondary LDO isolated from main 3.3V processor rail; auto-discharge prevents back-feed into imager during hot-swap battery replacement. Use Value: 25Ω internal discharge path clears VOUT in <1ms, eliminating false trigger events caused by residual voltage on imaging sensor lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5514-2.8YMT | Same 2.8V output and 300mA rating, but includes 4MΩ internal EN pull-down resistor. | Eliminates need for external pull-down resistor; suitable where EN signal is open-drain or undefined during boot. | Select MIC5514-2.8YMT if system lacks dedicated EN driver or requires fail-safe disable on floating control lines. |
| Torex XC6219B282MR-G | 2.8V fixed output, 300mA, 160mV dropout, but uses SOT-25 package (2.9mm × 2.8mm) and lacks auto-discharge. | Requires external discharge circuit for safe power-down; larger footprint limits use in ultra-thin devices. | Choose XC6219B282MR-G only if board space permits larger package and discharge is handled externally. |
Compared with MIC5512-2.8YMT, MIC5514-2.8YMT adds fail-safe EN behavior at identical performance, while XC6219B282MR-G trades compactness and integrated discharge for broader distributor availability and longer production lifecycle.
Availability
MIC5512-2.8YMT is available at Aetrix Electronics and suitable for smartphone power rails, portable medical sensors, GPS receivers, and industrial handheld scanners requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for MIC5512-2.8YMT 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, specializing in power management, timing, and interface solutions before its acquisition by Microchip Technology in 2015.
The MIC55xx family was designed specifically for ultra-compact, high-efficiency LDO applications in battery-powered consumer and industrial electronics - emphasizing minimal footprint, low quiescent current, and integrated safety features like auto-discharge.
FAQ
What is the input voltage range supported by the MIC5512-2.8YMT?
The MIC5512-2.8YMT supports an input voltage range of 2.5V to 5.5V. This allows direct operation from single-cell Li-ion (fully charged at 4.2V, discharged to ~3.0V) or regulated 3.3V/5V system rails. Operation below 2.5V risks dropout and loss of regulation; above 5.5V exceeds absolute maximum rating and may damage the device.
Does the MIC5512-2.8YMT require external capacitors, and what type is recommended?
Yes, the MIC5512-2.8YMT requires both input and output capacitors: 1µF ceramic (X5R or X7R dielectric) from VIN to GND and ≥1µF ceramic from VOUT to GND. These ensure stability, transient response, and PSRR performance. Y5V or Z5U dielectrics are not recommended due to severe capacitance loss over temperature.
How does the auto-discharge feature work on the MIC5512-2.8YMT?
When the EN pin is driven low, the MIC5512-2.8YMT activates an internal 25Ω NMOS FET between VOUT and GND. This discharges external output capacitance rapidly - typically clearing 1µF in under 1ms - preventing back-powering of upstream circuitry or unintended wake-up in multi-rail systems.
Is the MIC5512-2.8YMT pin-compatible with the MIC5514-2.8YMT?
No, the MIC5512-2.8YMT and MIC5514-2.8YMT share identical pinout and package, but differ electrically: MIC5512 has no internal EN pull-down, while MIC5514 includes a 4MΩ pull-down. Swapping them requires verifying EN drive capability - MIC5512-2.8YMT must never be left floating, whereas MIC5514-2.8YMT tolerates floating EN.
What thermal considerations apply to the MIC5512-2.8YMT in a 1.6mm × 1.6mm DFN package?
With θJA = 92.4°C/W, the MIC5512-2.8YMT dissipates 0.24W at 300mA with 0.8V input-output differential. At 102.8°C ambient, junction temperature reaches 125°C - its max rated limit. Adequate copper pour on the ePad and surrounding GND plane is essential; derating is required above 85°C ambient for continuous 300mA operation.
MIC5512-2.8YMT-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):
- 2.8V
- 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)
MIC5512-2.8YMT-TR FAQ
1.How can I place an order for MIC5512-2.8YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5512-2.8YMT-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 MIC5512-2.8YMT-TR reliable?
The price and inventory of MIC5512-2.8YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5512-2.8YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5512-2.8YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5512-2.8YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5512-2.8YMT-TR?
MIC5512-2.8YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5512-2.8YMT-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 MIC5512-2.8YMT-TR?
For technical support, including MIC5512-2.8YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5512-2.8YMT-TR requirements.
6.How does Aetrix verify that MIC5512-2.8YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5512-2.8YMT-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 MIC5512-2.8YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5512-2.8YMT-TR?
All MIC5512-2.8YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5512-2.8YMT-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 MIC5512-2.8YMT-TR part is unused and in its original packaging.
Return procedure for MIC5512-2.8YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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