MCP1612T-ADJI/MF

Voltage Regulators - DC DC Switching Regulators Overview

The MCP1612T-ADJI/MF is a single-channel, fully integrated synchronous buck regulator manufactured by Microchip Technology. It delivers a continuous output current of 1A with a fixed switching frequency of 1.4 MHz. The device operates within an input voltage range of 2.7V to 5.5V and supports adjustable output voltages from 0.8V to VIN via an external resistor divider. It is housed in an 8-pin MSOP package (suffix MF) and is rated for an operating temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fully integrated synchronous buck topology with internal high-side and low-side switches
• Current mode control architecture providing fast dynamic response to line and load transients
• Integrated shutdown control enabling ultra-low quiescent current consumption below 0.01 µA
• Built-in protection mechanisms including undervoltage lockout, overtemperature protection, and integrated soft-start

Voltage Regulators - DC DC Switching Regulators Applications

• Network Interface Cards
• Portable Computers
• DSL Modems and Routers
• USB-Powered Devices
• GBIC Modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'MF' confirms the 8-pin MSOP package variant when ordering. Confirm the 'T' indicates tape and reel packaging if required for automated assembly. Ensure the 'ADJI' designation matches the requirement for an adjustable output voltage configuration rather than a fixed voltage option. Cross-reference the full part number against official Microchip documentation to ensure compatibility with specific design-in requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring a compact solution with high efficiency at moderate currents. The 1.4 MHz switching frequency allows for smaller passive components compared to lower-frequency regulators. The adjustable output range provides flexibility for various logic families. Consider the thermal performance of the MSOP package for high ambient temperature environments where a DFN package might offer better heat dissipation.

Voltage Regulators - DC DC Switching Regulators Part Context

The MCP1612 series belongs to Microchip's portfolio of space-saving power management solutions designed for portable and embedded applications. The ADJ variant specifically allows designers to set the output voltage using external resistors, offering greater versatility than fixed-output counterparts. This family targets systems powered by single-cell lithium-ion or multi-cell NiMH batteries.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check Microchip datasheets for direct pin-compatible alternatives within the MCP1612 family, such as other suffix variations for different packages or fixed voltage outputs. Verify that any substitute maintains the 1A current rating and 1.4 MHz switching frequency to preserve board layout and component selection integrity.