NCP4625HSN28T1G

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

The NCP4625HSN28T1G is a CMOS linear voltage regulator from the NCP4625 series, manufactured by onsemi. It provides a fixed 2.8 V output with a maximum current capability of 300 mA. The device operates within an input voltage range of 2.6 V to 10 V and features low dropout characteristics, including a typical dropout of 200 mV at 100 mA load. Key electrical parameters include a quiescent current of 23 µA, standby current of 0.1 µA, and power supply rejection ratio of 70 dB at 1 kHz. It incorporates chip enable functionality, current fold-back protection, and thermal shutdown.

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

• Includes Chip Enable (CE) pin for active high control to reduce standby power consumption.
• Features internal current fold-back protection and thermal shutdown circuits for enhanced reliability.
• Designed for stability with ceramic capacitors, simplifying external component requirements.
• Provides fast output discharge via an internal transistor when disabled.

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

• Battery-powered products utilizing two lithium-ion cells
• Networking and communication equipment
• Cameras, DVRs, set-top boxes, and camcorders
• Toys and industrial applications

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

Verify the specific suffix 'HSN' indicates the standard version without auto-discharge, distinct from the 'DSN' variant which includes an output discharger. Confirm package type is SOT-23-5. Check for RoHS compliance status as per manufacturer documentation. Ensure application design accounts for thermal dissipation limits in the SOT-23 package under maximum load conditions.

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

Select this part for applications requiring a stable 2.8 V rail from a single-cell or dual-cell lithium battery source. The low quiescent current makes it suitable for portable devices. Consider the DSN variant if rapid output capacitor discharge upon shutdown is required. Evaluate thermal performance based on PCB layout and ambient temperature constraints.

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

This component belongs to the NCP4625 family of low dropout regulators. The series offers various fixed output voltages ranging from 1.2 V to 6.0 V in 0.1 V steps. Available packages include SC-70, SOT-89, and SOT-23. The HSN suffix denotes the standard version, while DSN denotes the version with output discharge capability.

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

NCP4625DSN28T1G: Same voltage and current but includes output discharge function.

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

What is the difference between the HSN and DSN suffixes?

The HSN suffix indicates the standard version, while the DSN suffix indicates a version that includes an internal transistor for faster discharging of the output capacitor when the device is disabled.

Is the NCP4625HSN28T1G stable with ceramic capacitors?

Yes, the datasheet explicitly states that the device is stable with ceramic capacitors, requiring only a 1 µF output decoupling capacitor for stable operation.