MIC2877 High Efficiency Boost Regulators

Microchip's MIC2877 compact, 2 MHz, synchronous boost 6.5 A regulator for a variety of applications

Image of Microchip's MIC2877 High Efficiency Boost RegulatorsThe MIC2877 from Microchip Technology is the expansion of their 2 MHz high-current synchronous boost regulator MIC287x family providing up to 95% efficiency in low-voltage applications. The MIC2877 is a compact and highly efficient 2 MHz synchronous boost regulator with a 6.5 A (typical) switch. It features a bidirectional true load disconnect function that prevents any leakage current between the input and output when the device is disabled (EN=GND), protecting the input supply and improves the start-up performance. The MIC2877 has the input voltage range between 2.5 V and 5.5 V and provides a 2 A output continuous current for VIN = 3 V and VOUT = 5 V. Fixed output and adjustable output versions are available.

The MIC2877 operates in bypass mode automatically when the input voltage is higher or equal to the target output voltage. At light loads, the boost converter goes to pulse frequency modulation (PFM) mode to improve the efficiency. In shutdown mode, the regulator typically consumes less than 2 µA. The MIC2877 also features an integrated anti-ringing switch to minimize EMI, overvoltage and overcurrent protection, UVLO, and thermal shutdown. The MIC2877 is available in an 8-pin FTQFN 2 mm x 2 mm package. There are several applications for this device including portable speakers, class D amplifiers, USB OTG (on-the-go) and HDMI hosts, and battery applications.

Image of Microchip's MIC2877 High Efficiency Boost Regulators

Features
  • Typical 6.5 A input peak current limit
  • Up to 95% efficiency
  • Fully integrated, high-efficiency, 2 MHz switching frequency
  • Bidirectional true load disconnect, overvoltage protection (OVP) and undervoltage lockout (UVLO), overcurrent protection and thermal shutdown
  • Controlled pre-charge current limit at start-up
  • Ultra-fast transient response
  • Input voltage range from 2.5 V to 5.5 V
  • Fixed and adjustable output versions
  • Typically, less than 2 μA shutdown current
  • Bypass mode for VIN ≥ VOUT
  • Integrated anti-ringing switch for EMI reduction
  • Highest current density in its class
  • Significant energy supply from a single-cell or paralleled lithium-ion batteries
  • Supports USB battery charging profiles including BC 1.2 and Apple/Samsung 12 W profiles
  • Automatic bypass mode prevents system brownout on battery-powered systems
Applications
 
  • Single-cell lithium battery powered applications
  • High-current parallel lithium battery applications
  • USB OTG and HDMI hosts
 
  • Portable battery backup supplies
  • Portable speakers
  • Power supply for class D amplifiers

MIC2877 Boost Regulator Dev Board

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
ADM00831 datasheet linkEVAL BOARD FOR MIC2877ADM00831EVAL BOARD FOR MIC28777 - Immediate
ADM00831 product page link

MIC2877 Boost Regulator ICs

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
MIC2877-AYFT-TR datasheet linkSWITCH SYNCHRONOUS BOOST REGULATMIC2877-AYFT-TRSWITCH SYNCHRONOUS BOOST REGULAT4350 - Immediate
MIC2877-AYFT-TR product page link
MIC2877-4.75YFT-TR datasheet linkSWITCH SYNCHRONOUS BOOST REGULATMIC2877-4.75YFT-TRSWITCH SYNCHRONOUS BOOST REGULAT500 - Immediate
MIC2877-4.75YFT-TR product page link
MIC2877-5.0YFT-TR datasheet linkSWITCH SYNCHRONOUS BOOST REGULATMIC2877-5.0YFT-TRSWITCH SYNCHRONOUS BOOST REGULAT500 - Immediate
MIC2877-5.0YFT-TR product page link
MIC2877-5.5YFT-TR datasheet linkSWITCH SYNCHRONOUS BOOST REGULATMIC2877-5.5YFT-TRSWITCH SYNCHRONOUS BOOST REGULAT500 - Immediate
MIC2877-5.5YFT-TR product page link
MIC2877-5.25YFT-TR datasheet linkSWITCH SYNCHRONOUS BOOST REGULATMIC2877-5.25YFT-TRSWITCH SYNCHRONOUS BOOST REGULAT300 - Immediate
MIC2877-5.25YFT-TR product page link
Published: 2018-03-08