NCP715SQ33T2G

Product Overview

The NCP715SQ33T2G from onsemi is a surface-mount linear voltage regulator that provides a fixed positive 3.3 V output from a single channel. It is specified for a maximum input voltage of 24 V and a maximum output current of 50 mA, with a dropout voltage of 0.35 V at 50 mA. The device is housed in an SC-88A (SC-70-5/SOT-353) package and includes over-current, over-temperature, and under-voltage lockout protection. Its operating temperature range is -40°C to 125°C at the junction.

Key Features

• Fixed 3.3 V positive output with one regulator channel, suitable for single-rail low-current supply tasks.
• Maximum input voltage of 24 V and maximum output current of 50 mA.
• Dropout voltage specified as 0.35 V at 50 mA, supporting operation with limited input-to-output headroom.
• Quiescent current of 4.2 µA and maximum supply current of 5.8 µA.
• Power-supply rejection ratio of 60 dB at 100 kHz.
• Integrated protection includes over-current, over-temperature, and under-voltage lockout.
• Surface-mount SC-88A (SC-70-5/SOT-353) package with junction temperature range of -40°C to 125°C.

Applications

• Regulating a compact 3.3 V supply for low-current digital or analog circuit blocks.
• Providing a local rail for sensors, indicators, or peripheral loads where 50 mA is sufficient.
• Post-regulating a higher-voltage input rail to a fixed 3.3 V output on space-constrained boards.
• Maintaining a regulated voltage in devices that require low quiescent current during standby operation.

Design & Procurement Notes

When selecting this regulator, confirm that the available input voltage remains at or below 24 V while staying above 3.3 V by at least 0.35 V at the intended load current. The 50 mA output limit should be checked against peak load requirements. The 4.2 µA quiescent current and 5.8 µA maximum supply current are relevant for low-power standby budgets, while the 60 dB PSRR at 100 kHz supports filtering of input-side noise. The SC-88A surface-mount package and junction temperature range of -40°C to 125°C should be considered alongside board layout, thermal dissipation, and protection behavior under over-current, over-temperature, and under-voltage conditions.