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Microchip Technology MIC5512-1.2YMT-TR
- Part No.:
- MIC5512-1.2YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-UFDFN Exposed Pad
- Datasheet:
-
MIC5512-1.2YMT-TR.pdf
- Description:
- IC REG LINEAR 1.2V 300MA 6TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,747
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Product details
Overview
MIC5512-1.2YMT-TR from Micrel is a fixed 1.2V, 300mA low-dropout linear regulator in a 6-pin 1.6mm × 1.6mm Thin DFN package, featuring ±1% initial output accuracy, 160mV dropout at 300mA, and auto-discharge functionality activated on enable pin deassertion - used to rapidly discharge output capacitance in portable power sequencing.
For engineers reviewing the MIC5512-1.2YMT-TR datasheet, MIC5512-1.2YMT-TR pinout, MIC5512-1.2YMT-TR application, or MIC5512-1.2YMT-TR equivalent, key selection criteria include guaranteed 300mA output current, ultra-low 38µA ground current at light load, stability with 1µF ceramic output capacitors, and –40°C to +125°C operating junction temperature range.
Technical Context
The MIC5512-1.2YMT-TR implements a CMOS-based LDO architecture with internal N-channel pass transistor, enabling low dropout and high PSRR (65dB at 1kHz). It integrates an active-high enable input without internal pull-down, requiring external logic control to avoid floating states.
Its auto-discharge circuit engages a 25Ω internal NFET between VOUT and GND when EN is low, ensuring rapid output voltage decay - critical for safe power-down sequencing in battery-powered systems where residual charge must be cleared before sleep or reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±1% initial accuracy - ensures precise core voltage for low-power microcontrollers and RF ICs. |
| Max Output Current | 300mA guaranteed - supports moderate-current digital loads such as ARM Cortex-M peripherals or sensor hubs. |
| Dropout Voltage | 160mV at 300mA - enables operation down to VIN = 1.36V, extending battery runtime in single-cell Li-ion or Li-poly systems. |
| Ground Current | 38µA typical at no load - minimizes quiescent power loss during standby, critical for always-on subsystems. |
| Input Voltage Range | 2.5V to 5.5V - compatible with common intermediate rails (3.3V, 5V) and wide-input battery sources. |
| Stability | Stable with ≥1µF ceramic output capacitor - eliminates need for bulky tantalum or electrolytic caps, reducing board area and cost. |
| Operating Temp | –40°C to +125°C junction - qualified for automotive cabin, industrial edge, and medical portable environments. |
Pinout & Package
Package: 6-pin 1.6mm × 1.6mm Thin DFN (MT) with exposed thermal pad (ePad), RoHS-compliant NiPdAu lead finish and halogen-free mold compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Active-high enable input | CMOS-compatible logic input; must be driven high (≥1.2V) to enable regulation; floating state is undefined - requires external pull-up or controlled driver. |
| 2, 5 - NC | No-connect terminals | Internally unconnected; must remain unconnected per design - not usable as heatsink anchors or signal paths. |
| 3 - VIN | Main input supply | Accepts 2.5V–5.5V; requires 1µF ceramic decoupling capacitor to GND for stability and noise suppression. |
| 4 - VOUT | Regulated output | Delivers fixed 1.2V; internally connected to 25Ω discharge FET when EN = low - clears output charge within microseconds. |
| 6 - GND | Power and signal reference | Primary ground return; must be low-impedance connection to system ground plane and tied to ePad for thermal performance. |
| ePad | Exposed thermal pad | Electrically and thermally connected to GND; mandatory soldering to PCB copper pour improves θJA by >30% and sustains full 300mA current. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge circuit | 25Ω internal NFET pulls VOUT to GND when EN is low - eliminates external bleed resistors and reduces power-down latency in portable devices. |
| Ultra-low quiescent current | 38µA typical at zero load - extends battery life in always-on monitoring circuits without compromising startup time. |
| Zero-off-mode shutdown | Sub-1µA total supply current when EN = 0V - enables true "off" state with no leakage path through regulator. |
| High PSRR | 65dB at 1kHz - suppresses ripple from noisy DC-DC converters feeding the LDO input, improving analog/RF subsystem noise floor. |
| Thermal shutdown protection | Integrated die-temperature sensing disables output above safe junction limit - prevents damage during overload or poor PCB thermal design. |
Applications
| Smartphones | Medical Wearables |
|---|---|
Use Scenario: Powering application processor I/O or memory interface rails during dynamic voltage scaling. IC Role / Device Role / Timing Role: Low-noise, fast-transient LDO delivering stable 1.2V to DDR I/O buffers during burst data transfers. Use Value: 160mV dropout allows operation from shared 1.36V intermediate rail, while 65dB PSRR prevents switching noise from corrupting memory timing margins. | Use Scenario: Supplying ultra-low-power MCU cores and biosensor analog front-ends in patch-style ECG monitors. IC Role / Device Role / Timing Role: Primary 1.2V supply enabling sub-10µA sleep current and <100µs wake-up response via EN-controlled sequencing. Use Value: 38µA ground current and auto-discharge ensure compliant power-down per IEC 62304 safety requirements and eliminate residual charge risks. |
| Industrial IoT Sensors | Automotive Body Control Modules |
Use Scenario: Regulating power for LoRaWAN transceivers and MEMS accelerometers in battery-operated gateways. IC Role / Device Role / Timing Role: Stable 1.2V source for RF IC biasing and sensor ADC reference, immune to input ripple from solar-charged batteries. Use Value: Stability with 1µF ceramic cap simplifies layout in space-constrained enclosures; –40°C to +125°C rating ensures reliability across outdoor deployment zones. | Use Scenario: Providing backup power rail for CAN transceiver logic and EEPROM in door module ECUs during ignition cycling. IC Role / Device Role / Timing Role: Always-on 1.2V LDO maintaining RAM retention and real-time clock during vehicle sleep mode. Use Value: No-load stability and zero-off-mode shutdown prevent parasitic drain; auto-discharge clears VOUT before re-enabling to avoid bus contention on wake-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5514-1.2YMT-TR | Includes internal 4MΩ EN pull-down resistor; otherwise identical electrical specs and package. | Eliminates need for external pull-down in systems with open-drain or floating EN signals during boot. | Select MIC5514-1.2YMT-TR if EN signal lacks defined logic state at power-up; otherwise MIC5512-1.2YMT-TR offers tighter control over enable timing. |
| Torex XC6219B122MR-G | Same 1.2V output, 300mA rating, and 1.6×1.6mm DFN-6 package; dropout 200mV @ 300mA; no auto-discharge. | Lacks integrated output discharge - requires external circuitry for safe power-down sequencing. | Choose XC6219B122MR-G only if auto-discharge is unnecessary and higher dropout is acceptable; verify thermal derating due to 110°C/W θJA. |
Compared with MIC5514-1.2YMT-TR and XC6219B122MR-G, the MIC5512-1.2YMT-TR provides deterministic EN control without pull-down overhead and unique auto-discharge capability - making it optimal for applications demanding precise power sequencing and minimal external components.
Availability
MIC5512-1.2YMT-TR is available at Aetrix Electronics and suitable for smartphone power management, medical wearable subsystems, and industrial IoT sensor nodes requiring stable component supply with guaranteed long-term availability.
Supply support for MIC5512-1.2YMT-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, acquired by Microchip Technology in 2015.
The MIC55xx family was designed specifically for space-constrained, battery-powered portable electronics requiring high accuracy, ultra-low IQ, and fast transient response - targeting smartphones, wearables, and handheld medical devices.
FAQ
What is the dropout voltage specification for MIC5512-1.2YMT-TR at full load?
The MIC5512-1.2YMT-TR has a maximum dropout voltage of 380mV at 300mA output current and 25°C, with a typical value of 160mV under the same conditions. This enables reliable operation with input voltages as low as 1.58V while maintaining 1.2V output regulation - critical for extending runtime in single-cell lithium systems.
Does MIC5512-1.2YMT-TR require an external pull-down resistor on the EN pin?
No - the MIC5512-1.2YMT-TR does not include an internal EN pull-down resistor. Its EN pin uses CMOS input structure and must be actively driven high to enable regulation; leaving it floating may cause indeterminate output behavior. An external pull-down is required only if system-level logic cannot guarantee a defined low state during power-up.
Can MIC5512-1.2YMT-TR operate without an output capacitor?
No - the MIC5512-1.2YMT-TR requires a minimum 1µF ceramic output capacitor connected from VOUT to GND for stability. Operation without this capacitor risks oscillation and regulation failure. X5R or X7R dielectrics are recommended; Y5V types are not suitable due to excessive capacitance drift over temperature.
What is the purpose of the auto-discharge function in MIC5512-1.2YMT-TR?
The auto-discharge function in MIC5512-1.2YMT-TR activates a 25Ω internal NFET between VOUT and GND when the EN pin is driven low, rapidly discharging external output capacitance. This prevents residual voltage from interfering with downstream logic states or causing unsafe power sequencing - especially important in portable devices with multi-rail architectures.
Is MIC5512-1.2YMT-TR compatible with lead-free reflow processes?
Yes - the MIC5512-1.2YMT-TR uses a GREEN RoHS-compliant 1.6mm × 1.6mm Thin DFN package with NiPdAu lead finish and halogen-free mold compound, rated for standard lead-free reflow profiles up to 260°C peak temperature (10-second duration), per JEDEC J-STD-020.
MIC5512-1.2YMT-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):
- 1.2V
- 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)
MIC5512-1.2YMT-TR FAQ
1.How can I place an order for MIC5512-1.2YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5512-1.2YMT-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 MIC5512-1.2YMT-TR reliable?
The price and inventory of MIC5512-1.2YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5512-1.2YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5512-1.2YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5512-1.2YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5512-1.2YMT-TR?
MIC5512-1.2YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5512-1.2YMT-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 MIC5512-1.2YMT-TR?
For technical support, including MIC5512-1.2YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5512-1.2YMT-TR requirements.
6.How does Aetrix verify that MIC5512-1.2YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5512-1.2YMT-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 MIC5512-1.2YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5512-1.2YMT-TR?
All MIC5512-1.2YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5512-1.2YMT-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 MIC5512-1.2YMT-TR part is unused and in its original packaging.
Return procedure for MIC5512-1.2YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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