NCP730ASN280T1G

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

The NCP730ASN280T1G is a CMOS Low Dropout (LDO) regulator from onsemi, designed for battery-powered and always-on systems. It features a very low quiescent current of 1 µA typical, enabling extended battery life. The device supports an operating input voltage range from 2.7 V to 38 V and provides a fixed output voltage of 2.8 V with ±1% accuracy. It is capable of sourcing up to 150 mA continuous output current and 200 mA peak current. Key features include fast transient response, low dropout voltage, built-in soft start, and over-current/thermal shutdown protections. This specific part number corresponds to the Version A configuration, which lacks the Power Good (PG) signal.

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

• Ultra-low quiescent current design ideal for energy-constrained applications
• Wide input voltage range supporting high-voltage battery sources
• Integrated protection mechanisms including thermal shutdown and current limiting
• Stable operation with small ceramic output capacitors

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

• Battery-powered tools and equipment
• Home automation systems
• RF devices requiring stable power rails
• Metering applications
• Remote control devices

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

Verify that the required application does not need a Power Good (PG) signal, as this Version A part lacks that feature. Confirm the fixed 2.8 V output meets system requirements. Ensure input voltage stays within the 2.7 V to 38 V range. Check thermal dissipation requirements against the TSOP-5 package thermal resistance if operating at high loads or high input voltages.

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

Select this component when a fixed 2.8 V output is needed with minimal standby current consumption. Choose Version B if a Power Good indicator is required for microcontroller reset or power sequencing. Consider the WDFN6 package if smaller footprint is critical, otherwise use the available TSOP-5 package. Ensure the load transient requirements are met by the device's fast response characteristics.

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

The NCP730 series includes multiple output voltage options and two versions: Version A without Power Good and Version B with Power Good. The ASN suffix indicates a fixed 2.8 V output in the TSOP-5 package. Other variants include adjustable outputs and different package types like WDFN6. The series is optimized for high-input voltage applications compared to standard LDOs.

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

Direct replacements must match the 2.8 V fixed output, 150 mA current rating, and 38 V max input voltage. Verify pin compatibility between TSOP-5 packages. If Power Good functionality is needed, consider the NCP730BSN280T1G (Version B). Ensure thermal performance is adequate for the new component in the existing layout.