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Microchip Technology MIC2877-5.5YFT-TR
- Part No.:
- MIC2877-5.5YFT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 8-UQFN
- Datasheet:
-
MIC2877-5.5YFT-TR.pdf
- Description:
- IC REG BOOST 5.5V 2A 8FTQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,410
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Product details
Overview
MIC2877-5.5YFT-TR from Microchip Technology is a 2 MHz synchronous boost regulator with bidirectional true load disconnect, designed for portable power reserve and USB OTG/HDMI host supplies. It delivers up to 2A continuous output at VIN = 3.0V/VOUT = 5.0V, features 6.5A typical switch current limit, integrated anti-ringing switch for EMI reduction, and operates across 2.5V–5.5V input range with fixed 5.5V output.
For engineers reviewing the MIC2877-5.5YFT-TR datasheet, MIC2877-5.5YFT-TR pinout, MIC2877-5.5YFT-TR application, or MIC2877-5.5YFT-TR equivalent, key selection considerations include its 5.5V fixed output, bidirectional shutdown behavior, ultra-fast transient response in portable battery-powered systems, and compatibility with compact 2 × 2 mm FTQFN packaging requiring minimal external components.
Technical Context
The MIC2877-5.5YFT-TR implements current-mode PWM control with internal compensation and a 2 MHz oscillator, enabling small external inductor (1 µH) and ceramic capacitor (3 × 22 µF) usage. Its architecture integrates high-side NMOS and low-side PMOS switches with active anti-ringing clamping during DCM to suppress SW node ringing.
Bidirectional true load disconnect is achieved by fully turning off both MOSFETs and disabling the body diode path when EN = GND, eliminating leakage between VIN and VOUT. Bypass mode activates automatically when VIN ≥ VOUT, routing input directly to output via the low-RDS(on) PMOS (33 mΩ typ.), while pre-charge current limiting (0.5A typ.) protects against start-up inrush into heavy or shorted loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.5V - eliminates need for external feedback resistors; stable for USB OTG and HDMI host VBUS generation. |
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion (2.7–4.2V), Li-polymer, and 3.3V/5V rail inputs without level shifting. |
| Switch Current Limit | 6.5A typical - enables robust 2A continuous output at 3V input, critical for parallel lithium cell backup applications. |
| Efficiency | Up to 95% - achieved at mid-load with 2 MHz switching, minimizing thermal stress in space-constrained portable designs. |
| Shutdown Current | <2 µA typical - preserves battery life in always-on portable equipment during standby or disable states. |
| Overvoltage Protection | 6.6–6.75V threshold - latches off on overvoltage events to prevent damage to downstream 5V logic or USB peripherals. |
| Package | 8-pin FTQFN 2 × 2 mm - surface-mount footprint with exposed thermal pad; compatible with standard reflow profiles and IPC-7351B land pattern. |
Pinout & Package
Package: 8-pin FTQFN (2 mm × 2 mm, 0.5 mm pitch, exposed thermal pad). Pin 1 marked by dot; pins numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply connection | Accepts 2.5–5.5V; requires ≥22 µF ceramic bulk cap to PGND for stability under high peak current demand. |
| AGND (Pin 2) | Analog reference ground | Separate low-noise return for internal bias and control circuitry; must be star-connected to PGND near IC. |
| PGND (Pin 3) | Power ground return | High-current return path for boost switch; requires short, wide trace to minimize voltage bounce during switching. |
| SW (Pin 4) | Internal switch node | Connects to inductor; carries high dv/dt; routing must avoid sensitive analog traces to reduce EMI coupling. |
| VOUT (Pin 5) | Regulated output | Delivers fixed 5.5V; requires ≥3 × 22 µF low-ESR ceramic caps to PGND for transient response and ripple suppression. |
| EN (Pin 6) | Enable control input | Active-high logic; internal 2.5 MΩ pull-down; must not float-tie to VIN via 10 kΩ resistor if always enabled. |
| VOUTS (Pin 7) | Fixed-output voltage sense | Internally connected to VOUT in fixed versions; used for precise OVP and PG monitoring without external divider. |
| PG (Pin 8) | Power Good open-drain output | Asserts high when VOUT ≥ 91% of 5.5V (≥5.005V); requires 1 MΩ pull-up to VIN for system power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional true load disconnect | Zero leakage path between VIN and VOUT when disabled-prevents reverse current flow in battery backup or dual-supply systems. |
| Integrated anti-ringing switch | Clamps SW node to VIN at end of DCM cycle-reduces EMI emissions by >10 dB compared to conventional boost topologies. |
| Automatic bypass mode | Enables direct VIN-to-VOUT conduction when VIN ≥ 5.5V-eliminates switching losses and improves efficiency at high input voltages. |
| Controlled pre-charge current limit | 0.5A typical limit during startup when VOUT < 0.5V-prevents inrush damage to capacitors or loads during cold boot. |
| Ultra-fast transient response | Sub-100 µs recovery from 0.01A → 1.5A load steps-maintains VOUT regulation within ±20 mV in USB OTG host applications. |
Applications
| USB OTG Host Power | Portable Power Reserve |
|---|---|
Use Scenario: Providing regulated 5.5V VBUS to USB peripherals from a single-cell Li-ion battery (2.7–4.2V). IC Role / Device Role / Timing Role: Synchronous boost regulator with true load disconnect ensures no backfeed into battery during peripheral hot-plug. Use Value: Enables compliant USB OTG operation with fast transient response and <2 µA shutdown current to extend battery runtime. |
Use Scenario: Acting as backup power source for microcontrollers or sensors during main supply interruption. IC Role / Device Role / Timing Role: High-efficiency step-up converter delivering stable 5.5V from partially discharged batteries down to 2.5V. Use Value: Supports >2A peak load capability and bidirectional isolation to prevent reserve battery drain during main supply recovery. |
| High-Current Parallel Li-Cell Systems | HDMI Host Supply |
Use Scenario: Generating 5.5V from stacked or paralleled lithium cells operating at variable voltage (3.0–4.5V). IC Role / Device Role / Timing Role: Boost regulator with 6.5A switch and integrated OVP protects downstream HDMI transceivers from overvoltage faults. Use Value: Delivers consistent 5.5V at full load across wide input range, with thermal shutdown and cycle-by-cycle overcurrent protection. |
Use Scenario: Powering HDMI transmitter ICs requiring clean, regulated 5.5V from embedded battery or low-voltage DC rails. IC Role / Device Role / Timing Role: Fixed-output boost converter with PG signal enables HDMI hot-plug detection and power sequencing. Use Value: PG output asserts only when VOUT is within 9% tolerance-ensures HDMI link integrity before enabling data transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61236PRTVR | 5.2V fixed output; 4A switch; 2.5V–4.5V input range; no bidirectional disconnect; requires external PG resistor network. | Limited to lower input max (4.5V); lacks true load isolation-unsuitable for battery backup where reverse current must be blocked. | Select when input stays ≤4.5V and bidirectional isolation is unnecessary; verify PG interface compatibility. |
| MAX17222ETA+T | 5.0V fixed output; 1.2A max output; 0.7V–5.5V input; no OVP latch; no PG pin; 1.2 MHz switching. | Lower current capability and missing OVP/PG limits use in USB/HDMI host roles; better suited for ultra-low-power sensor nodes. | Choose only for sub-1A loads with relaxed protection requirements; not drop-in for MIC2877-5.5YFT-TR's 2A/5.5V/OVP/PG feature set. |
Compared with TPS61236PRTVR and MAX17222ETA+T, the MIC2877-5.5YFT-TR uniquely combines 5.5V fixed output, 2A capability at low VIN, bidirectional disconnect, and integrated PG/OVP-making it the only option qualified for USB OTG host and HDMI power delivery in portable dual-battery systems.
Availability
MIC2877-5.5YFT-TR 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, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MIC2877-5.5YFT-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 company specializing in microcontrollers, analog devices, and power management ICs, with broad automotive, industrial, and consumer design-in support.
The MIC2877 product line targets high-efficiency, compact boost conversion for portable and battery-powered systems-designed specifically for USB, HDMI, and multi-cell lithium applications demanding reliability, low quiescent current, and robust protection features.
FAQ
What is the output voltage of the MIC2877-5.5YFT-TR?
The MIC2877-5.5YFT-TR provides a fixed 5.5V output voltage. This is implemented internally using the VOUTS pin tied to VOUT, eliminating the need for external feedback resistors. The output remains stable across input voltages from 2.5V to 5.5V and load currents up to 2A (at VIN = 3.0V), making it ideal for USB OTG and HDMI host power rails where precise 5V-class regulation is required.
Does the MIC2877-5.5YFT-TR support bidirectional load disconnect?
Yes, the MIC2877-5.5YFT-TR features true bidirectional load disconnect. When EN is driven low, both internal NMOS and PMOS switches turn off and the PMOS body diode is actively blocked-preventing any forward or reverse current flow between VIN and VOUT. This behavior is confirmed in Figures 2-23 and 2-24 of the datasheet and is essential for battery backup systems where reverse leakage must be eliminated.
What package type does the MIC2877-5.5YFT-TR use?
The MIC2877-5.5YFT-TR uses an 8-pin FTQFN package measuring 2 mm × 2 mm with 0.5 mm pitch and an exposed thermal pad. This package is documented in the "Package Types" section (page 2) and "Pin Descriptions" (page 11) of DS20005873A. It supports high thermal performance (θJA = 50°C/W) and is compatible with standard reflow soldering processes.
How does the MIC2877-5.5YFT-TR handle overvoltage conditions?
The MIC2877-5.5YFT-TR includes latch-off overvoltage protection (OVP) triggered when VOUT exceeds 6.6–6.75V. Upon activation, the device shuts down completely and remains latched until either the input supply is cycled or the EN pin is toggled. This protection is independent of the PG signal and is explicitly specified in the Electrical Characteristics table (page 5) under "Overvoltage Protection Threshold".
Is the MIC2877-5.5YFT-TR compatible with automatic bypass mode?
Yes, the MIC2877-5.5YFT-TR automatically enters bypass mode when VIN ≥ VOUT (i.e., VIN ≥ 5.5V). In this mode, the NMOS switch turns off and the PMOS operates as a low-impedance pass element (RDS(on) = 33 mΩ typ.), delivering input voltage directly to the output with minimal dropout and zero switching loss. This behavior is detailed in Section 5.4 and Figure 2-21 of DS20005873A.
MIC2877-5.5YFT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-UQFN
- 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:
- 2A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-FTQFN (2x2)
MIC2877-5.5YFT-TR FAQ
1.How can I place an order for MIC2877-5.5YFT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2877-5.5YFT-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 MIC2877-5.5YFT-TR reliable?
The price and inventory of MIC2877-5.5YFT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2877-5.5YFT-TR is usually 5 days.
3.What payment methods are accepted for MIC2877-5.5YFT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2877-5.5YFT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2877-5.5YFT-TR?
MIC2877-5.5YFT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2877-5.5YFT-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 MIC2877-5.5YFT-TR?
For technical support, including MIC2877-5.5YFT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2877-5.5YFT-TR requirements.
6.How does Aetrix verify that MIC2877-5.5YFT-TR is sourced from the original manufacturer or authorized distributors?
All MIC2877-5.5YFT-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 MIC2877-5.5YFT-TR meets industry standards.
7.What is the process for return or replacement of MIC2877-5.5YFT-TR?
All MIC2877-5.5YFT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2877-5.5YFT-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 MIC2877-5.5YFT-TR part is unused and in its original packaging.
Return procedure for MIC2877-5.5YFT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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