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Microchip Technology MIC2876-5.25YMT-TR
- Part No.:
- MIC2876-5.25YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
MIC2876-5.25YMT-TR.pdf
- Description:
- IC REG BOOST 5.25V 3.8A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,820
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Product details
Overview
MIC2876-5.25YMT-TR from Microchip Technology is a fixed-output, 2 MHz synchronous boost regulator with bi-directional load disconnect, 4.8A switch current capability, and integrated anti-ringing switch. It operates from 2.5V to 5.5V input and delivers a precise 5.25V output, enabling USB OTG host power and portable power reserve supplies in space-constrained designs.
For engineers reviewing the MIC2876-5.25YMT-TR datasheet, MIC2876-5.25YMT-TR pinout, MIC2876-5.25YMT-TR application, or MIC2876-5.25YMT-TR equivalent, key selection criteria include its 5.25V fixed output voltage, 2 mm × 2 mm UDFN-8 package with exposed thermal pad, <1 µA shutdown current, bypass mode operation when VIN ≥ VOUT, and bi-directional true load disconnect functionality.
Technical Context
The MIC2876-5.25YMT-TR implements a current-mode PWM control architecture operating at 2 MHz with internal 4.8A MOSFET switches (NMOS high-side, PMOS synchronous rectifier). Its bi-directional disconnect uses an "always-on" maximum supply selector that functions down to 0.3V on IN, isolating OUT from IN during shutdown regardless of relative voltage polarity.
It integrates an anti-ringing switch that clamps SW to IN during DCM to dissipate parasitic energy, reducing EMI. Automatic bypass mode activates when VIN exceeds VOUT, turning off the NMOS and fully enhancing the PMOS for low-impedance conduction - distinct from standard LDO or pass-through behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.25V ±1.5% - ensures stable USB OTG/HDMI host compliance without external feedback components. |
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion (2.7–4.2V), Li-polymer, or dual-cell NiMH inputs directly. |
| Switch Current Limit | 4.8A typical - enables high-current boost for parallel lithium cell applications up to ~2.5A continuous output. |
| Shutdown Current | <1 µA - minimizes battery drain in always-on portable equipment during standby. |
| Oscillator Frequency | 2 MHz ±20% - allows use of compact 1 µH inductors and reduces output ripple without sacrificing efficiency. |
| Junction Temperature | –40°C to +125°C - qualified for industrial and automotive cabin-adjacent portable electronics environments. |
| Package Thermal Resistance | θJA = 90°C/W - requires PCB thermal vias under EP pad to sustain >1.2A output at ambient temperatures above 60°C. |
Pinout & Package
Package: 8-pin 2 mm × 2 mm UDFN (MT) with exposed thermal pad (EP), RoHS-compliant, moisture-sensitive level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Boost Switch Node | Connects to inductor; carries high di/dt switching current - must be routed short and away from noise-sensitive nodes. |
| 2 PGND | Power Ground | High-current return path for internal MOSFETs; separate from AGND and connected at single-point ePad. |
| 3 IN | Supply Input | Accepts 2.5–5.5V input; requires ≥1 µF ceramic capacitor to AGND placed adjacent to pin. |
| 4 AGND | Analog Ground | Reference for control loop and feedback; tied to EP pad and connected to PGND at one point only. |
| 5 OUTS | Output Voltage Sense | Fixed-output version only; connects directly to OUT to close regulation loop - no external resistors needed. |
| 6 EN | Enable Input | Active-high logic control (1.5V threshold); internal 2.5 MΩ pull-down allows floating-disable operation. |
| 7 /PG | Open-Drain Power Good | Active-low signal indicates VOUT ≥ 0.9×VOUT; requires external 1 MΩ pull-up for system monitoring. |
| 8 OUT | Boost Output | Delivers regulated 5.25V; requires ≥22 µF low-ESR ceramic capacitor to PGND near the pin. |
| EP | Exposed Thermal Pad | Must be soldered to AGND plane with ≥6 thermal vias (0.3 mm diameter) for thermal performance and reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional true load disconnect | Prevents leakage between IN and OUT during shutdown - critical for battery-backed systems where reverse current must be blocked regardless of which side is higher potential. |
| Integrated anti-ringing switch | Clamps SW node to IN during DCM to eliminate ringing-induced EMI - eliminates need for external snubber networks and saves board space. |
| Bypass mode (VIN ≥ VOUT) | Enables seamless transition from boost to direct conduction with <10 mΩ effective RDS(ON) - maintains power delivery during input voltage surges without dropout or restart. |
| Pulse-skipping at light load | Maintains >85% efficiency down to 10 mA load - extends battery life in intermittently active portable devices like HDMI adapters. |
| Thermal shutdown with hysteresis | Triggers at 155°C with 15°C hysteresis - prevents thermal runaway while allowing recovery without external reset circuitry. |
Applications
| USB OTG Host Power | HDMI Portable Adapter |
|---|---|
|
Use Scenario: Powering USB peripherals (keyboard, flash drive) from a smartphone or tablet battery. IC Role / Device Role / Timing Role: Synchronous boost regulator delivering stable 5.25V at up to 1.2A while maintaining bi-directional isolation during device sleep. Use Value: Eliminates need for external load switches and enables true zero-quiescent-current shutdown - extending usable battery runtime by >30% versus legacy solutions. |
Use Scenario: Providing clean 5V power to HDMI sink devices (monitors, projectors) from portable battery packs. IC Role / Device Role / Timing Role: Fixed-output boost converter with bypass mode ensuring uninterrupted power during input voltage fluctuations (e.g., battery sag). Use Value: Delivers <100 mV output ripple in PWM mode and avoids brownout during transient load steps - critical for HDMI link stability. |
| Portable Power Reserve | Parallel Li-ion Cell Management |
|
Use Scenario: Compact emergency power banks charging USB-C devices from single-cell sources. IC Role / Device Role / Timing Role: High-efficiency (up to 95%) boost stage enabling >2.5A peak output from 3.0–4.2V Li-ion input. Use Value: Achieves >90% efficiency across 100 mA–2 A load range - maximizing usable Wh from limited battery capacity. |
Use Scenario: Boosting voltage from two series-connected Li-ion cells (6–8.4V) to 5.25V for downstream USB subsystems. IC Role / Device Role / Timing Role: Bi-directional disconnect IC preventing reverse current flow into discharged cells during partial-load conditions. Use Value: Enables safe, autonomous cell balancing via controlled discharge paths - avoiding over-discharge and thermal stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61236PRTJR | 5.0V fixed output, 4A switch, 2.5V–5.5V input, no bi-directional disconnect, no bypass mode. | Lacks true load isolation and automatic VIN ≥ VOUT conduction - requires external MOSFET for reverse-blocking. | Select when strict 5.0V output is acceptable and bi-directional disconnect is not required. |
| MAX17222ATA+T | 5.0V fixed output, 1.2A switch, 0.4V–5.5V input, <1 µA shutdown, no anti-ringing switch. | Lower current rating and no integrated EMI mitigation - unsuitable for >1A USB OTG or HDMI host loads. | Select for ultra-low-power, sub-1A applications where board area is more constrained than performance. |
Compared with TPS61236PRTJR and MAX17222ATA+T, the MIC2876-5.25YMT-TR uniquely combines 5.25V precision output, 4.8A current capability, bi-directional disconnect, and bypass mode - making it the only option among the three capable of sustaining full USB OTG power delivery while blocking reverse current and eliminating EMI snubbers.
Availability
MIC2876-5.25YMT-TR is available at Aetrix Electronics and suitable for USB OTG host power, portable HDMI adapter designs, and high-current parallel lithium cell applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC2876-5.25YMT-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 global provider of microcontroller, analog, FPGA, and mixed-signal semiconductors, with core expertise in power management ICs for portable and industrial applications.
The MIC2876 product line was designed specifically for high-efficiency, space-constrained boost conversion in battery-powered consumer electronics - emphasizing low quiescent current, integrated protection, and simplified layout through features like anti-ringing and bi-directional disconnect.
FAQ
What is the output voltage tolerance of the MIC2876-5.25YMT-TR?
The MIC2876-5.25YMT-TR has a fixed output voltage of 5.25V with a total accuracy of ±1.5% over temperature and line/load conditions, as specified in the Electrical Characteristics table (page 4 of DS20005572A). This tolerance ensures reliable compliance with USB 2.0/3.0 host voltage requirements without external trimming.
Does the MIC2876-5.25YMT-TR support automatic bypass mode, and how does it behave?
Yes, the MIC2876-5.25YMT-TR automatically enters bypass mode when VIN exceeds VOUT (i.e., when input voltage rises above 5.25V). In this mode, the NMOS switch turns off and the PMOS is fully enhanced, creating a low-impedance path from IN to OUT - enabling seamless power delivery without dropout or restart, unlike conventional boost-only regulators.
How is bi-directional load disconnect implemented in the MIC2876-5.25YMT-TR?
The MIC2876-5.25YMT-TR achieves true bi-directional disconnect using an internal "maximum supply selector" that controls the back-gate diode of the PMOS synchronous rectifier. This circuit remains functional down to 0.3V on the IN pin, blocking leakage current in both directions - whether IN or OUT is at higher potential - during shutdown.
What package type and thermal requirements apply to the MIC2876-5.25YMT-TR?
The MIC2876-5.25YMT-TR uses an 8-pin 2 mm × 2 mm UDFN package (MT suffix) with an exposed thermal pad (EP). To maintain junction temperature ≤125°C at 1.2A output, the EP pad must be soldered to a solid AGND plane with ≥6 thermal vias (0.3 mm diameter) connecting to inner ground layers - per Microchip's layout guidelines in DS20005572A page 17.
Can the MIC2876-5.25YMT-TR be used with input voltages below 2.5V?
No - the MIC2876-5.25YMT-TR has a minimum operating input voltage of 2.5V, defined by its UVLO rising threshold of 2.32V (typical). Operation below 2.5V is outside the guaranteed operating range and may result in unstable regulation, premature shutdown, or failure to start. For sub-2.5V inputs, alternative regulators such as the MAX17222 must be considered.
MIC2876-5.25YMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 5.25V
- Voltage - Output (Max):
- -
- Current - Output:
- 3.8A (Switch)
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x2)
MIC2876-5.25YMT-TR FAQ
1.How can I place an order for MIC2876-5.25YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2876-5.25YMT-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 MIC2876-5.25YMT-TR reliable?
The price and inventory of MIC2876-5.25YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2876-5.25YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC2876-5.25YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2876-5.25YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2876-5.25YMT-TR?
MIC2876-5.25YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2876-5.25YMT-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 MIC2876-5.25YMT-TR?
For technical support, including MIC2876-5.25YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2876-5.25YMT-TR requirements.
6.How does Aetrix verify that MIC2876-5.25YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC2876-5.25YMT-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 MIC2876-5.25YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC2876-5.25YMT-TR?
All MIC2876-5.25YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2876-5.25YMT-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 MIC2876-5.25YMT-TR part is unused and in its original packaging.
Return procedure for MIC2876-5.25YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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