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Microchip Technology MIC2877-5.0YFT-TR
- Part No.:
- MIC2877-5.0YFT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 8-UQFN
- Datasheet:
-
MIC2877-5.0YFT-TR.pdf
- Description:
- IC REG BOOST 5V 8FTQFN
- Quantity:
- Payment:
- Shipping:
Inventory:15,660
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Product details
Overview
MIC2877-5.0YFT-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 applications. It delivers up to 2 A continuous output current at VIN = 3.0 V and VOUT = 5.0 V, features integrated anti-ringing switch for EMI reduction, and operates across 2.5 V to 5.5 V input range.
For engineers reviewing the MIC2877-5.0YFT-TR datasheet, MIC2877-5.0YFT-TR pinout, MIC2877-5.0YFT-TR application, or MIC2877-5.0YFT-TR equivalent, key selection criteria include its fixed 5.0 V output, 6.5 A typical peak switch current limit, ultra-fast transient response, bypass mode operation (VIN ≥ VOUT), and Power Good (PG) open-drain output with 91% rising threshold.
Technical Context
The MIC2877-5.0YFT-TR implements current-mode PWM control with internal compensation and a 2 MHz oscillator. Its dual-MOSFET power stage includes an NMOS switch (typ. 45 mΩ RDS(on)) and PMOS synchronous rectifier (typ. 33 mΩ), enabling bidirectional isolation when disabled.
It integrates soft-start (1.1–2 ms), pre-charge current limiting (0.5 A typ. at VOUT ≤ 0.5 V), overvoltage protection (6.6–6.75 V), thermal shutdown (+155 °C), and UVLO (2.29–2.49 V rising, 200 mV hysteresis). Bypass mode activates automatically when VIN ≥ VOUT, reducing conduction loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±1.5%; ensures stable USB-compliant supply without external feedback resistors. |
| Input Voltage Range | 2.5 V to 5.5 V; supports single-cell Li-ion (3.0–4.2 V), LiFePO₄ (2.5–3.65 V), and USB-powered inputs. |
| Switching Frequency | 1.6–2.4 MHz (typ. 2 MHz); enables use of compact 1 µH inductors and minimizes EMI in space-constrained designs. |
| Peak Switch Current Limit | 4.8–7.2 A (typ. 6.5 A); protects internal MOSFETs during startup, short-circuit, or heavy-load transients. |
| Shutdown Current | 1–3 µA (typ. <2 µA); preserves battery life in always-on portable systems with deep sleep modes. |
| Power Good Threshold | Rising: 0.91 × VOUT (4.55 V); falling: 0.83 × VOUT (4.15 V); provides reliable rail monitoring for system sequencing. |
| Operating Ambient Temp | –40 °C to +85 °C; qualified for industrial and extended-temperature portable equipment environments. |
Pinout & Package
Package: 8-pin FTQFN (2 mm × 2 mm, 0.5 mm pitch, 0.55 mm height), thermally enhanced with exposed PGND pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply connection | Accepts 2.5–5.5 V; requires ≥22 µF ceramic bulk capacitor to PGND for stability under high di/dt loads. |
| AGND (Pin 2) | Analog reference ground | Separate low-noise return path for control circuitry; must be star-connected to PGND near IC for noise immunity. |
| PGND (Pin 3) | Power ground return | High-current return for MOSFET switches; connects to exposed thermal pad for thermal dissipation and low-impedance path. |
| SW (Pin 4) | Switch node | Connects to inductor; carries high-frequency switching current; requires short, wide trace to minimize EMI and voltage spikes. |
| VOUT (Pin 5) | Regulated output | Delivers fixed 5.0 V; requires ≥66 µF (3 × 22 µF) low-ESR ceramic capacitors to PGND for transient response and ripple suppression. |
| EN (Pin 6) | Enable control input | Active-high logic; internal 2.5 MΩ pull-down; must be driven or tied to VIN via 10 kΩ resistor-never left floating. |
| VOUTS (Pin 7) | Fixed-output voltage sense | Internally connected to VOUT for 5.0 V regulation; must be shorted directly to VOUT pin-no external divider required. |
| PG (Pin 8) | Power Good open-drain output | Asserts high when VOUT ≥ 4.55 V; requires external 1 MΩ pull-up to VIN for system power sequencing and fault detection. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional true load disconnect | Zero leakage current between VIN and VOUT when EN = GND-prevents battery drain and enables safe hot-swap in portable reserves. |
| Integrated anti-ringing switch | Clamps SW node to VIN during DCM to suppress inductive ringing, reducing radiated EMI without external snubbers. |
| Automatic bypass mode | Enables direct VIN-to-VOUT conduction when VIN ≥ VOUT, achieving <100 mΩ effective path resistance and >95% efficiency at light loads. |
| Controlled pre-charge current limit | Limits inrush to 0.5 A (typ.) during startup when VOUT < 0.5 V-protects against output short-circuit damage before regulation engages. |
| Ultra-fast transient response | Stabilizes within <10 µs after 1 A load step (as shown in Fig. 2-12–2-14); maintains <200 mV droop with minimal output capacitance. |
Applications
| USB OTG Host Power | Portable Power Reserve |
|---|---|
Use Scenario: Mobile phone or tablet acting as USB OTG host powering peripherals (keyboard, flash drive) from internal battery. IC Role / Device Role / Timing Role: Boost regulator providing stable 5.0 V bus power with bidirectional disconnect to isolate peripheral backfeed during suspend. Use Value: Enables compliance with USB 2.0/3.0 bus voltage tolerance (4.4–5.25 V) while maintaining >90% efficiency at 500 mA load and preventing battery discharge when OTG is inactive. |
Use Scenario: Compact external battery pack delivering regulated 5 V to charge smartphones or power accessories via USB-A port. IC Role / Device Role / Timing Role: Primary DC-DC stage converting variable Li-ion cell voltage (2.8–4.2 V) to fixed 5.0 V output with fast load-step recovery. Use Value: Delivers up to 2 A continuous output with <2 µA shutdown current, extending standby time; bypass mode extends runtime when cell voltage exceeds 5.0 V. |
| HDMI Source Power | Parallel Li-ion Cell Backup |
Use Scenario: Portable HDMI transmitter (e.g., smartphone-to-monitor adapter) requiring clean 5 V for HDMI PHY and level shifters. IC Role / Device Role / Timing Role: Low-noise, high-PSRR boost supply with integrated anti-ringing switch to meet HDMI CTS EMI limits. Use Value: Reduces conducted/radiated emissions at 2 MHz fundamental and harmonics-eliminates need for ferrite beads or LC filters in space-constrained HDMI dongles. |
Use Scenario: High-current backup system using two or more parallel Li-ion cells to sustain 5 V output during main supply failure. IC Role / Device Role / Timing Role: Synchronous boost controller managing combined cell stack voltage (e.g., 3.0–4.5 V) into regulated 5.0 V with overcurrent and thermal protection. Use Value: Supports >2 A continuous delivery with cycle-by-cycle overcurrent limiting and +155 °C thermal shutdown-ensures safe operation under sustained high-power demand. |
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 5.0 V output; 4.5 A switch; 2.5 MHz switching; no bidirectional disconnect; no bypass mode. | Lacks true load isolation and VIN ≥ VOUT conduction path-unsuitable for battery-reserve applications requiring zero leakage. | Select when higher switching frequency and smaller inductor size are prioritized over load disconnect and bypass functionality. |
| MAX17222ETA+T | Adjustable/fixed 5.0 V option; 2.5 A switch; 1.2 MHz; integrated soft-start only-no OVP, no PG, no anti-ringing switch. | Missing overvoltage protection and Power Good signaling-requires external supervision for safety-critical portable power rails. | Select for cost-sensitive, lower-current (<1.5 A) applications where full protection suite and EMI control are not required. |
Compared with TPS61236PRTJR and MAX17222ETA+T, the MIC2877-5.0YFT-TR uniquely combines fixed 5.0 V output, bidirectional true disconnect, automatic bypass mode, and integrated anti-ringing-making it optimal for USB OTG, HDMI host, and portable reserve supplies demanding both efficiency and robust fault management.
Availability
MIC2877-5.0YFT-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 consistent parametric performance across production batches.
Supply support for MIC2877-5.0YFT-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 a focus on reliability, longevity, and embedded system integration.
The MIC2877 family is part of Microchip's high-efficiency, low-voltage DC-DC converter portfolio, engineered specifically for portable and battery-powered applications demanding compact size, fast transient response, and comprehensive protection features.
FAQ
What is the output voltage tolerance of the MIC2877-5.0YFT-TR?
The MIC2877-5.0YFT-TR provides a fixed 5.0 V output with ±1.5% tolerance over temperature and line/load conditions, as specified in the Electrical Characteristics table (DS20005873A-page 5). This tight regulation ensures compatibility with USB 2.0/3.0 bus voltage requirements (4.4–5.25 V) without external trimming components.
Does the MIC2877-5.0YFT-TR support automatic bypass mode, and how does it function?
Yes, the MIC2877-5.0YFT-TR automatically enters bypass mode when VIN ≥ VOUT. In this state, the NMOS switch turns off and the PMOS synchronous rectifier fully conducts, creating a low-impedance path (<100 mΩ) from input to output. This improves efficiency at light loads and extends battery life in portable reserve applications where input voltage approaches or exceeds 5.0 V.
What is the purpose of the VOUTS pin on the MIC2877-5.0YFT-TR?
The VOUTS pin on the MIC2877-5.0YFT-TR is the dedicated output voltage sensing terminal for fixed-output variants. It must be shorted directly to the VOUT pin-no external resistor divider is needed. This internal connection enables precise 5.0 V regulation by feeding back the actual output voltage to the error amplifier without external component drift or layout sensitivity.
How does the bidirectional true load disconnect feature work in the MIC2877-5.0YFT-TR?
When EN is pulled low, the MIC2877-5.0YFT-TR disables both the NMOS and PMOS switches and actively turns off the body diode of the PMOS. This prevents any reverse current flow from VOUT to VIN, eliminating leakage paths and ensuring zero quiescent current between input and output-critical for preserving battery charge in portable power reserve systems.
What thermal protection mechanisms does the MIC2877-5.0YFT-TR include?
The MIC2877-5.0YFT-TR incorporates overtemperature shutdown at +155 °C (typ.) with +15 °C hysteresis, plus internal thermal foldback and current limiting. When junction temperature exceeds the threshold, the device disables switching and holds in thermal shutdown until die temperature falls below +140 °C. This protects the IC during sustained overload or poor PCB thermal design.
MIC2877-5.0YFT-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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- -
- 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)
MIC2877-5.0YFT-TR FAQ
1.How can I place an order for MIC2877-5.0YFT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2877-5.0YFT-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 MIC2877-5.0YFT-TR reliable?
The price and inventory of MIC2877-5.0YFT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2877-5.0YFT-TR is usually 5 days.
3.What payment methods are accepted for MIC2877-5.0YFT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2877-5.0YFT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2877-5.0YFT-TR?
MIC2877-5.0YFT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2877-5.0YFT-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 MIC2877-5.0YFT-TR?
For technical support, including MIC2877-5.0YFT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2877-5.0YFT-TR requirements.
6.How does Aetrix verify that MIC2877-5.0YFT-TR is sourced from the original manufacturer or authorized distributors?
All MIC2877-5.0YFT-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 MIC2877-5.0YFT-TR meets industry standards.
7.What is the process for return or replacement of MIC2877-5.0YFT-TR?
All MIC2877-5.0YFT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2877-5.0YFT-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 MIC2877-5.0YFT-TR part is unused and in its original packaging.
Return procedure for MIC2877-5.0YFT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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