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Microchip Technology MIC2876-5.5YMT-TR
- Part No.:
- MIC2876-5.5YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
MIC2876-5.5YMT-TR.pdf
- Description:
- IC REG BOOST 5.5V 3.8A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,547
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Product details
Overview
MIC2876-5.5YMT-TR from Microchip Technology is a fixed-output 5.5V synchronous boost regulator with bi-directional load disconnect, 4.8A switch current capability, 2 MHz switching frequency, and integrated anti-ringing switch. It operates from 2.5V to 5.5V input and delivers up to 5.5V output in an 8-pin 2 mm × 2 mm UDFN package, used in USB OTG power supplies and portable power reserve systems.
For engineers reviewing the MIC2876-5.5YMT-TR datasheet, MIC2876-5.5YMT-TR pinout, MIC2876-5.5YMT-TR application, or MIC2876-5.5YMT-TR equivalent, key selection criteria include fixed 5.5V output voltage, bi-directional true load disconnect functionality, <1 µA shutdown current, bypass mode operation when VIN ≥ VOUT, and thermal shutdown at 155°C.
Technical Context
The MIC2876-5.5YMT-TR implements a current-mode PWM control architecture with internal 2 MHz oscillator and slope compensation for stable operation across wide load ranges. Its bi-directional load disconnect uses a PMOS/NMOS power stage controlled by an "always-on" maximum supply selector that functions down to 0.3V on IN.
It integrates an anti-ringing switch that clamps SW to IN during DCM to suppress ringing, and enters pulse-skipping mode at light loads to maintain >95% efficiency. Bypass mode activates automatically when VIN exceeds VOUT, turning off NMOS and fully enhancing PMOS for low-impedance conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.5V - eliminates external feedback resistors and ensures ±1.5% accuracy over temperature and load. |
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion (3.0–4.2V), Li-polymer, and USB 5V sources with UVLO at 2.32V (rising). |
| Switch Current Limit | 4.8A typical - enables high-current boost for parallel lithium cell applications and portable power banks. |
| Shutdown Current | <1 µA - minimizes battery drain in always-on portable equipment requiring long standby life. |
| Oscillator Frequency | 2 MHz (1.6–2.4 MHz) - allows use of compact 1 µH inductors and reduces EMI through fixed-frequency PWM. |
| Thermal Shutdown | 155°C with 15°C hysteresis - protects against sustained overload or poor PCB thermal design without latch-off. |
| Package | 8-pin 2 mm × 2 mm UDFN with exposed thermal pad - provides low θJA (90°C/W) and requires AGND connection for optimal thermal performance. |
Pinout & Package
Package: 8-pin 2 mm × 2 mm UDFN (MT suffix), with exposed thermal pad (EP) requiring connection to AGND for thermal management and noise reduction.
| 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 sensitive analog nodes. |
| 2 PGND | Power Ground | Return path for high-current boost stage - requires separate low-inductance loop from AGND, joined at EP. |
| 3 IN | Supply Input | Accepts 2.5–5.5V input; requires ≥1 µF ceramic capacitor to AGND placed adjacent to pin for stability. |
| 4 AGND | Analog Ground | Reference for control loop and /PG comparator - must connect to EP and tie to PGND at single point. |
| 5 OUTS | Output Sense (Fixed) | Direct connection to OUT pin for fixed-output regulation - enables precise 5.5V feedback without external divider. |
| 6 EN | Enable Input | Active-high logic enable with 2.5 MΩ internal pull-down - floating = disabled; supports system-level power sequencing. |
| 7 /PG | Open-Drain Power Good | Active-low flag indicating VOUT ≥ 0.9×VOUT; requires 1 MΩ pull-up and sinks 90Ω typical when asserted. |
| 8 OUT | Boost Output | Delivers regulated 5.5V output; requires ≥22 µF low-ESR ceramic capacitor to PGND near pin for transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional true load disconnect | Prevents leakage between IN and OUT when disabled - critical for battery-backed systems where reverse current must be blocked in both directions. |
| Integrated anti-ringing switch | Clamps SW node to IN during DCM - eliminates parasitic ringing without external snubbers, reducing EMI and improving EMC compliance. |
| Bypass mode (VIN ≥ VOUT) | Enables direct conduction path with minimal dropout - extends battery runtime by avoiding unnecessary conversion loss when input exceeds target output. |
| PFM at light loads | Switches to pulse-skipping mode below ~100 mA - maintains >90% efficiency down to microamp loads, ideal for intermittent-use portable devices. |
| Thermal and overcurrent protection | Combines cycle-by-cycle current limiting (4.8A) and 155°C thermal shutdown with hysteresis - ensures robust fault recovery without external supervision. |
Applications
| USB OTG Power Supply | Portable Power Reserve |
|---|---|
Use Scenario: Provides regulated 5.5V output from a 3.7V Li-ion battery to power USB peripherals in smartphone or tablet host mode. IC Role / Device Role / Timing Role: Synchronous boost regulator with bi-directional disconnect - isolates battery from USB VBUS when device is powered off or in sleep. Use Value: Enables compliant USB OTG operation with fast start-up, low quiescent current (<1 µA), and automatic bypass when battery voltage approaches 5.5V. | Use Scenario: Powers external accessories from a compact, high-current portable power bank using dual or parallel lithium cells. IC Role / Device Role / Timing Role: High-efficiency (up to 95%) 2 MHz boost converter - delivers up to 4.8A peak switch current to sustain high-power loads like HDMI transmitters or SSDs. Use Value: Supports high-current parallel lithium cell configurations with integrated anti-ringing switch to minimize EMI in space-constrained enclosures. |
| Tablet/System Power Rail | HDMI Host Interface |
Use Scenario: Generates stable 5.5V rail for auxiliary circuitry (e.g., touch controller, camera interface) in tablets operating from single-cell batteries. IC Role / Device Role / Timing Role: Fixed-output boost regulator with soft-start and power-good signaling - ensures clean power-up sequencing and system-level fault detection via /PG. Use Value: Delivers precise 5.5V ±1.5% output with 1.1 ms soft-start to prevent inrush-induced brownouts on shared battery rails. | Use Scenario: Supplies clean, regulated 5.5V to HDMI source components (e.g., level shifters, redriver ICs) in portable media players. IC Role / Device Role / Timing Role: Low-noise synchronous boost with bypass mode - maintains uninterrupted power during battery voltage sag (e.g., 4.0V → 3.5V) without output droop. Use Value: Eliminates need for LDO post-regulation by providing low-ripple output (via 22 µF ceramic cap) and fast line transient response (≤100 µs recovery). |
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 | Fixed 5.0V output; 4.5A switch; 2.5 MHz; no bi-directional disconnect; higher quiescent current (12 µA) | Lacks true bi-directional load isolation - unsuitable for battery backup scenarios requiring reverse leakage blocking. | Select only if 5.0V output suffices and bi-directional disconnect is not required. |
| MAX17222ETA+T | Adjustable output (2.0–5.5V); 1.2A switch; 1.2 MHz; no bypass mode; no anti-ringing switch | Lower current capability and missing bypass/anti-ringing features limit use in high-current portable power reserves. | Choose only for low-power, cost-sensitive designs where 1.2A peak current and absence of bypass mode are acceptable. |
Compared with TPS61236PRTJR and MAX17222ETA+T, the MIC2876-5.5YMT-TR uniquely combines fixed 5.5V output, 4.8A switch current, bi-directional load disconnect, and integrated anti-ringing - making it the only option among the three suitable for USB OTG hosts requiring zero-reverse-leakage and high-efficiency battery-to-5V conversion.
Availability
MIC2876-5.5YMT-TR is available at Aetrix Electronics and suitable for USB OTG power supplies, portable power reserve systems, and tablet auxiliary power rails requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MIC2876-5.5YMT-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 semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with emphasis on reliability, longevity, and industrial-grade qualification.
The MIC2876 product line delivers compact, high-efficiency synchronous boost regulators for portable and battery-powered applications - designed specifically to replace discrete boost solutions in space-constrained, high-current consumer electronics.
FAQ
What is the output voltage of the MIC2876-5.5YMT-TR?
The MIC2876-5.5YMT-TR has a factory-trimmed fixed output voltage of 5.5V with ±1.5% accuracy over temperature and load. This eliminates the need for external feedback resistors and ensures consistent regulation in USB OTG and portable power applications where precise 5V-compatible output is required. The MIC2876-5.5YMT-TR achieves this using its dedicated OUTS pin tied internally to the output sense path.
Does the MIC2876-5.5YMT-TR support bi-directional load disconnect?
Yes, the MIC2876-5.5YMT-TR provides true bi-directional load disconnect by controlling both NMOS and PMOS switches in its power stage. When disabled (EN = low), it blocks leakage current in both directions - from IN to OUT and from OUT to IN - even with as little as 0.3V on the IN pin. This feature is essential for battery-backed systems where reverse current must be prevented during shutdown, and is confirmed in the functional description and pin table of the DS20005572A datasheet for the MIC2876-5.5YMT-TR.
What package type does the MIC2876-5.5YMT-TR use?
The MIC2876-5.5YMT-TR uses an 8-pin 2 mm × 2 mm UDFN package (MT suffix) with an exposed thermal pad (EP). The package drawing specifies land pattern dimensions and requires soldering the EP to AGND for optimal thermal performance and noise reduction. Thermal resistance is specified as θJA = 90°C/W, and the datasheet mandates connecting EP to AGND - not PGND - to ensure proper biasing of the analog control circuitry within the MIC2876-5.5YMT-TR.
How does bypass mode work in the MIC2876-5.5YMT-TR?
In bypass mode, the MIC2876-5.5YMT-TR disables the NMOS switch and fully enhances the PMOS switch to create a low-impedance path from IN to OUT when VIN ≥ VOUT. This occurs automatically without external control, reducing conduction loss and extending battery life. During bypass, the device maintains /PG assertion and soft-start behavior, and the MIC2876-5.5YMT-TR's datasheet confirms this mode delivers VOUT = VIN with minimal dropout - critical for maintaining USB compliance during battery voltage decay.
What is the maximum switching frequency of the MIC2876-5.5YMT-TR?
The MIC2876-5.5YMT-TR operates at a nominal switching frequency of 2 MHz, with a guaranteed range of 1.6 MHz to 2.4 MHz across temperature and process variation. This fixed-frequency current-mode PWM architecture enables use of small 1 µH inductors and simplifies EMI filtering. The oscillator frequency is internally generated and not user-adjustable - a key differentiator from programmable boost controllers - and is explicitly specified in Table 1-1 of the DS20005572A datasheet for the MIC2876-5.5YMT-TR.
MIC2876-5.5YMT-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):
- 5.5V
- 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)
MIC2876-5.5YMT-TR FAQ
1.How can I place an order for MIC2876-5.5YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2876-5.5YMT-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 MIC2876-5.5YMT-TR reliable?
The price and inventory of MIC2876-5.5YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2876-5.5YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC2876-5.5YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2876-5.5YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2876-5.5YMT-TR?
MIC2876-5.5YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2876-5.5YMT-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 MIC2876-5.5YMT-TR?
For technical support, including MIC2876-5.5YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2876-5.5YMT-TR requirements.
6.How does Aetrix verify that MIC2876-5.5YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC2876-5.5YMT-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 MIC2876-5.5YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC2876-5.5YMT-TR?
All MIC2876-5.5YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2876-5.5YMT-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 MIC2876-5.5YMT-TR part is unused and in its original packaging.
Return procedure for MIC2876-5.5YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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