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Microchip Technology MIC2876-5.5YMT-T5
- Part No.:
- MIC2876-5.5YMT-T5
- Manufacturer:
- Microchip Technology
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
MIC2876-5.5YMT-T5.pdf
- Description:
- IC REG BOOST 5.5V 3.8A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,672
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Product details
Overview
MIC2876-5.5YMT-T5 from Microchip Technology is a fixed-output 5.5V synchronous boost regulator with bi-directional load disconnect, 2.5V–5.5V input range, 4.8A switch current capability, and integrated anti-ringing switch for EMI reduction-used in USB OTG host power supplies and portable power reserve circuits.
For engineers reviewing the MIC2876-5.5YMT-T5 datasheet, MIC2876-5.5YMT-T5 pinout, MIC2876-5.5YMT-T5 application, or MIC2876-5.5YMT-T5 equivalent, key selection criteria include its 5.5V fixed output, 2 MHz switching frequency, <1 µA shutdown current, bypass mode operation when VIN ≥ VOUT, and thermal shutdown at 155°C.
Technical Context
The MIC2876-5.5YMT-T5 implements current-mode PWM control with automatic pulse-skipping at light loads to sustain high efficiency across wide load ranges. Its bi-directional true load disconnect uses an NMOS/PMOS power stage with back-gate diode isolation controlled by a maximum supply selector that operates down to 0.3V on IN.
It integrates a 2 MHz oscillator, soft-start circuit (1.1 ms), internal reference (0.9 V ±1.5%), and open-drain /PG output with 0.9×VOUT rising threshold. The anti-ringing switch clamps SW to IN during DCM to suppress inductive ringing without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.5V - eliminates need for external feedback resistors and ensures stable USB-compliant host voltage. |
| Input Range | 2.5V to 5.5V - supports single-cell Li-ion (3.0–4.2V), LiFePO₄ (2.5–3.65V), and dual-cell alkaline inputs. |
| Switch Current | 4.8A peak - enables high-current boost delivery for parallel lithium cell applications up to 2.5A continuous output. |
| Shutdown Current | <1 µA - preserves battery life in always-on portable equipment during standby or system sleep modes. |
| Switching Frequency | 2 MHz (±20%) - allows use of compact 1 µH inductors and reduces EMI filtering requirements. |
| Thermal Shutdown | 155°C with 15°C hysteresis - provides robust overtemperature protection while avoiding nuisance cycling in thermally constrained layouts. |
| Bypass Mode | Active when VIN ≥ VOUT - delivers low-loss direct conduction path (PMOS fully on) for improved efficiency at high input voltages. |
Pinout & Package
Package: 8-pin 2 mm × 2 mm UDFN with exposed thermal pad (EP), rated for –40°C to +125°C junction temperature and θJA = 90°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Boost Switch Node | Connects to inductor; carries high-frequency, high-current switching waveform-requires short, wide routing away from sensitive analog nodes. |
| PGND | Power Ground | Low-impedance return path for boost switch currents; must be separated from AGND and joined at single point near EP. |
| IN | Supply Input | Accepts 2.5–5.5V input; requires ≥1 µF ceramic capacitor to AGND placed adjacent to pin for noise suppression. |
| AGND | Analog Ground | Reference for control loop and feedback; connects directly to EP and forms clean bias reference for internal regulators. |
| OUTS | Output Sense (Fixed) | Internally connected to OUT in fixed-output version; enables precise regulation without external divider. |
| EN | Enable Input | Active-high logic control with 2.5 MΩ internal pull-down-floating pin disables device; compatible with 1.8V/3.3V GPIO. |
| /PG | Power Good Output | Open-drain active-low signal indicating VOUT ≥ 0.9×VOUT; requires 1 MΩ pull-up to AGND or VOUT. |
| OUT | Boost Output | Delivers regulated 5.5V; requires ≥22 µF low-ESR ceramic capacitor to PGND placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional Load Disconnect | Prevents leakage between IN and OUT when disabled-even with 0.3V on IN-enabling true power domain isolation in battery-backed systems. |
| Integrated Anti-Ringing Switch | Clamps SW node to IN during DCM to eliminate high-frequency ringing, reducing EMI without snubbers or layout compromises. |
| Bypass Mode Operation | Automatically engages when VIN ≥ VOUT, turning PMOS fully on to deliver <50 mΩ conduction path-improving efficiency by >15% vs. forced boost at high VIN. |
| Current-Mode PWM Control | Provides inherent cycle-by-cycle current limiting, fast transient response, and stable operation with 1–2.2 µH inductors without external compensation. |
| Soft-Start Timing | 1.1 ms internal ramp limits inrush current into output capacitors-preventing input voltage droop and enabling reliable cold-start from weak sources. |
Applications
| USB OTG Host Power | Portable Power Reserve |
|---|---|
Use Scenario: Providing 5.5V/2A power from a single-cell Li-ion battery to enable USB On-The-Go peripheral connectivity in smartphones and tablets. IC Role / Device Role / Timing Role: Synchronous boost regulator delivering regulated 5.5V output with bi-directional disconnect to prevent backfeed into battery during host mode. Use Value: Enables compliant USB host operation without external LDO or charge pump; bypass mode extends runtime when battery voltage exceeds 5.5V. | Use Scenario: Acting as backup power source for microcontrollers or real-time clocks during main supply failure in portable medical or industrial devices. IC Role / Device Role / Timing Role: Fixed-output boost converter with <1 µA shutdown current and true load disconnect-maintaining zero quiescent drain on primary battery. Use Value: Delivers stable 5.5V rail with no hold-up capacitor required; thermal shutdown protects against overcurrent during fault conditions. |
| High-Current Parallel Li Cells | Tablet/System Power Management |
Use Scenario: Supplying 5.5V/2.5A to system rails from two parallel Li-ion cells operating at 3.0–4.2V per cell. IC Role / Device Role / Timing Role: High-efficiency (up to 95%) synchronous boost regulator with 4.8A switch and integrated anti-ringing switch for clean power delivery. Use Value: Supports high-current demand without external EMI filters; 2 MHz switching minimizes inductor size and PCB footprint. | Use Scenario: Generating auxiliary 5.5V rail for HDMI transmitters, audio codecs, or display interfaces in space-constrained tablet designs. IC Role / Device Role / Timing Role: Compact 2 mm × 2 mm UDFN boost IC with exposed thermal pad-optimized for thermal performance in thin-profile consumer enclosures. Use Value: Achieves >90% efficiency at 1A load; /PG signal enables system-level power sequencing and fault detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61236PDSGR | 5.2V fixed output, 4A switch, 2.5V–5.5V input, no bypass mode, 1.2 MHz switching. | Lacks bi-directional disconnect and bypass functionality-requires external circuitry for true load isolation. | Choose when lower cost and simpler layout are prioritized over ultra-low shutdown current and input-output isolation. |
| MAX17222ATA+T | 5.0V fixed output, 2A switch, 0.7V–5.5V input, 1.2 MHz, <1 µA shutdown, no bypass mode. | Lower output current and no bypass mode limit suitability for high-power USB OTG or parallel-cell applications. | Select for ultra-low-input-voltage operation (down to 0.7V) where 2A output suffices and thermal headroom is ample. |
Compared with TPS61236PDSGR and MAX17222ATA+T, the MIC2876-5.5YMT-T5 uniquely combines 5.5V fixed output, 4.8A switch, bi-directional disconnect, and automatic bypass mode-making it optimal for high-efficiency, high-current portable power where input voltage may exceed output.
Availability
MIC2876-5.5YMT-T5 is available at Aetrix Electronics and suitable for USB OTG host power, portable power reserve supplies, and high-current parallel lithium cell applications requiring stable component supply and long-term production continuity.
Supply support for MIC2876-5.5YMT-T5 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 broad design-in support and long-lifecycle product commitments.
The MIC2876 family is designed for high-efficiency, space-constrained portable power applications-including tablets, smartphones, and battery-powered peripherals-where bi-directional isolation and bypass mode improve system runtime and reliability.
FAQ
What is the output voltage accuracy of the MIC2876-5.5YMT-T5?
The MIC2876-5.5YMT-T5 has a fixed 5.5V output with ±1.5% voltage accuracy over temperature and load. This specification applies across the full operating junction temperature range (–40°C to +125°C) and ensures compliance with USB host voltage tolerances without external calibration or trimming.
Does the MIC2876-5.5YMT-T5 support automatic bypass mode, and how does it work?
Yes, the MIC2876-5.5YMT-T5 automatically enters bypass mode when VIN ≥ VOUT. In this state, the internal PMOS is fully enhanced while the NMOS is off, creating a low-impedance path (<50 mΩ) from IN to OUT. This avoids unnecessary switching losses and improves efficiency by up to 15% compared to forced boost operation at high input voltages.
What is the maximum continuous output current supported by the MIC2876-5.5YMT-T5?
The MIC2876-5.5YMT-T5 supports up to 2.5A continuous output current under typical thermal conditions (θJA = 90°C/W, TA = 25°C, 2-layer PCB with 5000 mm² copper area). Peak switch current is 4.8A, but sustained output depends on layout, ambient temperature, and inductor DCR-derating is required above 85°C ambient.
How does the bi-directional load disconnect function operate in the MIC2876-5.5YMT-T5?
The MIC2876-5.5YMT-T5 uses an NMOS/PMOS power stage with a dedicated maximum supply selector that isolates both directions when disabled. Even with only 0.3V on IN, the back-gate diode of the PMOS is turned off-ensuring zero leakage current between input and output, critical for battery-backed systems and power domain partitioning.
What package type and thermal characteristics apply to the MIC2876-5.5YMT-T5?
The MIC2876-5.5YMT-T5 uses an 8-pin 2 mm × 2 mm UDFN package with exposed thermal pad (EP). Its thermal resistance is θJA = 90°C/W (typical), and it operates across –40°C to +125°C junction temperature. For optimal thermal performance, EP must be soldered to AGND with ≥6 thermal vias connected to an internal ground plane.
MIC2876-5.5YMT-T5 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-T5 FAQ
1.How can I place an order for MIC2876-5.5YMT-T5 through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2876-5.5YMT-T5 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-T5 reliable?
The price and inventory of MIC2876-5.5YMT-T5 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-T5 is usually 5 days.
3.What payment methods are accepted for MIC2876-5.5YMT-T5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2876-5.5YMT-T5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2876-5.5YMT-T5?
MIC2876-5.5YMT-T5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2876-5.5YMT-T5 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-T5?
For technical support, including MIC2876-5.5YMT-T5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2876-5.5YMT-T5 requirements.
6.How does Aetrix verify that MIC2876-5.5YMT-T5 is sourced from the original manufacturer or authorized distributors?
All MIC2876-5.5YMT-T5 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-T5 meets industry standards.
7.What is the process for return or replacement of MIC2876-5.5YMT-T5?
All MIC2876-5.5YMT-T5 units undergo pre-shipment inspection (PSI). If there is an issue with MIC2876-5.5YMT-T5, 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-T5 part is unused and in its original packaging.
Return procedure for MIC2876-5.5YMT-T5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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