NCP4589DSQ12T1G

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

The NCP4589DSQ12T1G is a CMOS 300 mA tri-mode low dropout linear voltage regulator manufactured by onsemi. It features an operating input voltage range of 1.4 V to 5.25 V and provides a fixed output voltage of 1.2 V. The device incorporates an auto eco pin that enables switching between fast response mode and low power mode based on load current, typically transitioning at approximately 3 mA. It includes current fold-back protection and is stable with ceramic capacitors.

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

• Tri-mode operation automatically switches between high-performance fast response mode and ultra-low quiescent current low power mode based on load conditions.
• Integrated current fold-back protection safeguards the device against short circuits and overload conditions.
• Stable with small-value ceramic output capacitors, facilitating compact printed circuit board designs.

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

• Battery powered equipment
• Portable communication equipments
• Cameras, image sensors and camcorders

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

Verify the specific suffix 'D' indicates the SC-70 package variant when sourcing replacements. Confirm RoHS compliance status as these are Pb-free devices. Check for availability as automotive or industrial grade variants may have different ordering codes. Ensure the datasheet revision matches design requirements for electrical characteristics.

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

Select this component for applications requiring a fixed 1.2 V rail from a variable supply between 1.4 V and 5.25 V. The tri-mode functionality optimizes battery life in portable devices by reducing standby current during light loads. Verify thermal dissipation capabilities within the SC-70 package for the expected power loss under maximum load conditions.

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

This part belongs to the NCP4589 family of 300 mA LDO regulators. The family offers various output voltages in 0.1 V steps and multiple package options including SC-70, SOT23, and XDFN. The DSQ12 designation specifies the 1.2 V output version in the SC-70 package.

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

Direct substitutes include other NCP4589 variants with different output voltages or packages, such as NCP4589DSQ18T1G (1.8V) or NCP4589SQT12T1G (SOT23 package). Cross-family replacement requires verifying equivalent current ratings and dropout characteristics.