NCP691MN15T2G

Product Overview

The NCP691MN15T2G from onsemi is a positive fixed-output linear voltage regulator designed for single-output 1.5V power delivery. It provides up to 1A output current in a compact 6-DFN (3x3) surface-mount package with an exposed pad. The device has a maximum input voltage rating of 6V and specifies a maximum dropout of 0.41V at 1A, supporting regulation when the input is close to the 1.5V output. Control and protection features include an enable pin, over-temperature protection, and short-circuit protection. Its quiescent current is 200 µA, with a maximum supply current of 240 µA, and it operates from -40°C to 85°C.

Key Features

• Positive output configuration with fixed 1.5V output.
• 1A output current rating.
• Maximum input voltage of 6V.
• Maximum dropout voltage of 0.41V at 1A.
• Enable control feature for output activation or shutdown.
• Over-temperature and short-circuit protection.
• 200 µA quiescent current and 240 µA maximum supply current.
• 6-DFN (3x3) surface-mount package with exposed pad.
• Operating temperature range of -40°C to 85°C.

Applications

• Providing a fixed 1.5V supply to digital logic or interface circuitry on embedded boards.
• Generating a regulated 1.5V rail from input sources up to 6V in compact surface-mount designs.
• Supporting controlled output activation or shutdown in systems that require an external enable signal.
• Serving as a low-dropout supply for circuits that need over-temperature and short-circuit protection.

Design & Procurement Notes

Designers selecting the NCP691MN15T2G should verify that the available input voltage remains below the 6V maximum and that headroom above the 1.5V output accommodates the 0.41V dropout specification at full 1A load. The exposed-pad 6-DFN package requires attention to PCB thermal relief and copper area for heat dissipation, especially near the 85°C upper operating temperature. The enable pin allows controlled output activation, but the regulator is fixed-output, so output voltage selection is limited to 1.5V. Input and output filtering should be selected according to the system's transient and stability requirements, while layout should minimize trace inductance and resistance between the regulator and load.