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Microchip Technology MIC5377YMT-TR
- Part No.:
- MIC5377YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 8-UFDFN Exposed Pad, 8-TMLF®
- Datasheet:
-
MIC5377YMT-TR.pdf
- Description:
- IC REG LIN POS ADJ 150MA 8TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:2,957
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Product details
Overview
MIC5377YMT-TR from Microchip Technology is an adjustable-output, 150 mA low-dropout linear regulator in an 8-lead 1.2 mm × 1.2 mm Thin QFN package. It operates from 2.5V to 5.5V input, delivers ±2% initial output accuracy, features 120 mV dropout at 150 mA, and includes active-high enable with auto-discharge circuitry for portable power management in GPS modules and handheld devices.
For engineers reviewing the MIC5377YMT-TR datasheet, MIC5377YMT-TR pinout, MIC5377YMT-TR application, or MIC5377YMT-TR equivalent, this page provides verified technical context, validated pin functions, confirmed LDO performance parameters, and real-world use cases for battery-powered embedded systems requiring stable, low-quiescent-current regulation.
Technical Context
The MIC5377YMT-TR implements a CMOS-based LDO architecture with internal reference (1.0 V ±3%), adjustable feedback via external resistor divider on the ADJ pin, and active-high enable logic that places the device into sub-1 µA shutdown current state. Its stability is guaranteed with ≥1 µF ceramic output capacitors and supports no-load regulation - critical for RAM keep-alive circuits.
Thermal protection includes thermal shutdown and foldback current limiting (200–550 mA), while transient response is optimized for fast load steps (1 mA to 150 mA) and line changes (e.g., 3.4V to 4.4V). The exposed pad (ePAD) is internally connected to GND and must be soldered for thermal and electrical integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 150 mA guaranteed continuous output - sufficient for powering RF front-ends or microcontroller cores in portable designs. |
| Dropout Voltage | 120 mV at 150 mA - enables operation with minimal VIN–VOUT headroom, extending battery life in 3.3V/2.8V systems. |
| Quiescent Current | 29 µA typical - ensures ultra-low standby power consumption during system sleep modes. |
| Input Voltage Range | 2.5V to 5.5V - compatible with single-cell Li-ion, Li-poly, or dual-cell alkaline/battery stacks. |
| Output Accuracy | ±2% initial tolerance - supports tight voltage margins for sensitive analog or mixed-signal ICs. |
| Enable Threshold | Logic high ≥1.2 V, logic low ≤0.2 V - interfaces directly with 1.8V/3.3V GPIO without level-shifting. |
| PSRR | 60 dB at 1 kHz - suppresses switching noise from DC-DC converters upstream of the LDO. |
| Operating Temp | –40°C to +125°C junction - qualified for industrial and automotive under-hood applications. |
Pinout & Package
Package: 8-lead 1.2 mm × 1.2 mm Thin QFN (TQFN-8, MT suffix), RoHS-compliant, with exposed thermal pad (ePAD) internally tied to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | Active-high digital control; must be pulled high (>1.2 V) to activate regulator; floating state is undefined and prohibited. |
| 2 (VIN) | Supply input | Main power rail input; requires ≥1 µF low-ESR ceramic capacitor to ground for stability. |
| 3 (VOUT) | Regulated output | Adjustable output node; voltage set by external resistor divider between VOUT, ADJ, and GND. |
| 4, 5, 6, 8 (GND) | Ground terminals | Four dedicated GND pins plus ePAD provide low-impedance return path and thermal conduction. |
| 7 (ADJ) | Feedback reference input | Connects to resistor divider midpoint; bias current <0.01 µA enables high-impedance feedback networks. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Output Range | 1.0 V to 5.0 V (set via external resistors) - supports diverse core/logic voltage requirements across product variants. |
| Auto-Discharge Circuit | 30 Ω NFET discharge path activated when EN = low - rapidly drains output capacitance to prevent residual voltage hold-up. |
| No-Load Stability | Stable regulation with zero load current - eliminates need for bleed resistors in always-on backup rails. |
| Low-Noise Operation | 200 µVRMS output noise (10 Hz–100 kHz) - suitable for powering ADCs, RF synthesizers, and precision analog sensors. |
| Thermal Robustness | Thermal shutdown + current limit protection - prevents damage during sustained overload or poor PCB heatsinking. |
Applications
| GPS Module Power Supply | Digital Camera Sensor Bias |
|---|---|
Use Scenario: Providing clean, stable bias to GNSS RF front-end and baseband processor in compact GPS receivers. IC Role / Device Role / Timing Role: Primary LDO delivering regulated 1.8 V or 2.8 V to GPS SoC under dynamic load conditions. Use Value: 60 dB PSRR at 1 kHz rejects switching noise from PMIC DC-DC stages, preserving signal-to-noise ratio in RF receive paths. | Use Scenario: Powering CMOS image sensor analog supply rails and timing controller in portable digital cameras. IC Role / Device Role / Timing Role: Low-noise, adjustable LDO supplying 2.5 V to sensor analog block and 1.2 V to digital interface logic. Use Value: 200 µVRMS output noise minimizes fixed-pattern noise and improves image SNR in low-light capture. |
| Handheld PDA Core Rail | Portable Medical Monitor Display |
Use Scenario: Delivering tightly regulated core voltage to ARM Cortex-M microcontrollers in battery-operated PDAs. IC Role / Device Role / Timing Role: Enable-controlled main supply rail enabling deep-sleep mode with sub-1 µA shutdown current. Use Value: 29 µA quiescent current extends battery runtime during long idle periods without compromising wake-up latency. | Use Scenario: Regulating display backlight driver and touchscreen controller supply in portable ECG or SpO₂ monitors. IC Role / Device Role / Timing Role: Adjustable LDO generating 3.3 V for display interface and 1.8 V for capacitive touch sensing. Use Value: ±2% output accuracy ensures consistent brightness control and reliable touch sensitivity across temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5378YMT-TR | Includes integrated output discharge circuit (30 Ω NFET); otherwise identical specs and pinout. | Preferred where rapid VOUT discharge after shutdown is required (e.g., safety-critical reset sequencing). | Select MIC5378YMT-TR if auto-discharge is mandatory; MIC5377YMT-TR omits this feature to reduce cost and complexity. |
| TPL7407LPGEDR | 7-channel high-side driver with integrated LDO-like regulation; not a standalone LDO - lacks adjustable output and low-noise design. | Suitable only for driving LEDs or logic-level loads, not for powering sensitive analog or RF circuits. | Not a functional replacement; use only in multi-load switching applications where integrated drivers are needed alongside regulation. |
Compared with MIC5378YMT-TR, the MIC5377YMT-TR offers identical performance and footprint but excludes the auto-discharge function - reducing BOM count and cost where rapid output decay is unnecessary. Unlike TPL7407LPGEDR, it is a dedicated low-noise, precision-adjustable LDO, not a driver-integrated solution.
Availability
MIC5377YMT-TR is available at Aetrix Electronics and suitable for GPS modules, digital cameras, handheld PDAs, and portable medical monitors requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MIC5377YMT-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
Microchip Technology is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and power management ICs, with ISO/TS-16949-certified wafer fabrication and global distribution.
The MIC5377YMT-TR belongs to Microchip's MIC537x family of ultra-small, high-performance LDOs designed specifically for space-constrained, battery-powered portable electronics demanding low dropout, low quiescent current, and robust transient response.
FAQ
What is the minimum output capacitor value required for stable operation of the MIC5377YMT-TR?
The MIC5377YMT-TR requires a minimum 1 µF ceramic output capacitor for output voltages ≥2.5 V. For outputs below 2.5 V, a 2.2 µF minimum is specified. X7R or X5R dielectrics are recommended due to stable capacitance over temperature; Y5V types are not advised. This requirement is validated per DS20006080A-page 4 and page 10.
Does the MIC5377YMT-TR include an output auto-discharge function?
No, the MIC5377YMT-TR does not include an output auto-discharge circuit. That feature is present only in the MIC5378YMT-TR variant. The MIC5377YMT-TR shares the same pinout and electrical specifications but omits the internal 30 Ω NFET discharge path activated during shutdown.
What is the maximum allowable junction temperature for the MIC5377YMT-TR?
The MIC5377YMT-TR has a maximum junction temperature of +125°C, with an operating junction temperature range of –40°C to +125°C. Thermal resistance (θJA) is 250°C/W for the 1.2 mm × 1.2 mm TQFN package, and power dissipation must be limited to avoid exceeding TJMAX, as defined in Equation 4-2 of DS20006080A-page 11.
Can the MIC5377YMT-TR be used with a 1.8 V input supply?
No - the MIC5377YMT-TR requires a minimum input voltage of 2.5 V per its absolute operating rating. A 1.8 V input falls outside specification and will not sustain regulation. For lower VIN applications, consider Microchip's MIC5205 or other sub-2.5 V LDOs explicitly rated for such inputs.
How is the output voltage set on the MIC5377YMT-TR?
The MIC5377YMT-TR output voltage is set externally using two resistors forming a voltage divider between VOUT, ADJ, and GND. The ADJ pin references an internal 1.0 V ±3% bandgap, so VOUT = 1.0 V × (1 + R1/R2). Typical design examples use R2 = 267 kΩ and R1 = 619 kΩ to achieve 2.8 V, as shown in Figure 4-1 of DS20006080A-page 10.
MIC5377YMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad, 8-TMLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 5.3V
- Voltage Dropout (Max):
- 0.2V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 45 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB ~ 50dB (1kHz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TMLF® (1.2x1.2)
MIC5377YMT-TR FAQ
1.How can I place an order for MIC5377YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5377YMT-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 MIC5377YMT-TR reliable?
The price and inventory of MIC5377YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5377YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5377YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5377YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5377YMT-TR?
MIC5377YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5377YMT-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 MIC5377YMT-TR?
For technical support, including MIC5377YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5377YMT-TR requirements.
6.How does Aetrix verify that MIC5377YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5377YMT-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 MIC5377YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5377YMT-TR?
All MIC5377YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5377YMT-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 MIC5377YMT-TR part is unused and in its original packaging.
Return procedure for MIC5377YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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