NCP502SQ28T2G

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The NCP502SQ28T2G is a positive fixed-output low-dropout (LDO) voltage regulator from the onsemi NCP502 series. It provides a stable 2.8 V output with a maximum load current of 80 mA. The device features an ultra-low quiescent current of 90 µA and a typical dropout voltage of 1.3 V at full load. It operates within an input voltage range supporting its linear regulation characteristics and functions reliably across an ambient temperature range of -40°C to +85°C. Packaged in a compact SC-70-5 (SOT-353) surface-mount case, it integrates a PMOS power transistor for efficient performance.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Ultra-low quiescent current consumption for extended battery life
• Integrated PMOS power transistor for high efficiency
• Fixed 2.8 V output voltage option
• Compact SC-70-5 surface-mount packaging

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery-powered portable electronic devices
• Low-power sensor modules requiring stable biasing
• Embedded systems with strict power budget constraints
• Wireless communication equipment

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific output voltage (2.8 V) and package type (SC-70-5/SOT-353) against your schematic requirements. Confirm that the 80 mA load current capability meets your circuit's peak demand. Ensure the operating temperature range (-40°C to +85°C) aligns with your environmental conditions. Check RoHS compliance status if required by your manufacturing standards. Validate supplier authenticity through authorized distribution channels.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 2.8 V rail is needed with minimal standby current draw. The 80 mA output current limits suitability for high-power loads; consider higher-current LDOs if peak demands exceed this value. The SC-70-5 package offers space savings but requires careful thermal management due to limited heat dissipation. Compare dropout voltage specifications against your minimum input-to-output differential requirements to ensure regulation stability under varying load conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

The NCP502 series comprises low-quiescent-current LDO regulators designed for portable applications. This specific part number denotes the 2.8 V fixed output variant in the SC-70-5 package. The series utilizes PMOS pass elements to achieve low dropout voltages while maintaining high power supply rejection ratios. It belongs to onsemi's portfolio of power management integrated circuits focused on energy efficiency.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Cross-reference with other NCP502 variants offering different fixed output voltages if system requirements change. Verify pin compatibility with existing PCB layouts when substituting. Ensure equivalent quiescent current and dropout voltage specifications are maintained for similar power performance.