NCP4589DSQ25T1G

Current - Output:	300mA
Base Part Number:	NCP4589
Supplier Device Package:	SC-88A (SC-70-5/SOT-353)
Package / Case:	5-TSSOP, SC-70-5, SOT-353
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current
Control Features:	Enable
PSRR:	70dB (1kHz)
Current - Quiescent (Iq):	4µA
Series:	--
Voltage Dropout (Max):	0.5V @ 300mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V
Voltage - Input (Max):	5.25V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The NCP4589DSQ25T1G is a low-voltage, low-power integrated voltage regulator (LVR) designed by ON Semiconductor Corporation. The device combines a primary mover such as a Boost, Buck, or Buck-Boost switching regulator with a Linearly Regulated output stage. As a result, the NCP4589DSQ25T1G produces high output voltage accuracy with very low quiescent current and fast transient response. The NCP4589DSQ25T1G is widely used in portable and compact devices that require precise power delivery and minimized power dissipation.

Application Field

The NCP4589DSQ25T1G has a wide range of applications. The most popular ones include:

• Battery-operated and/or portable electronics
• Bluetooth and other wireless technology devices
• Exacting medical and home healthcare applications
• Industrial, automotive, and IoT control applications
• Applications requiring peak current draw of up to 50A

In any of these applications, the NCP4589DSQ25T1G provides low power to ensure long battery life and high efficiency to minimize heat dissipation.

Working Principle

The NCP4589DSQ25T1G contains two voltage regulators: a Linear Regulator and a Boost, Buck, or Buck-Boost Switching Regulator. In operation, the linear regulator maintains a precise voltage from the Boost, Buck, or Buck-Boost output, removing any voltage ripple that the switching regulator may have produced.The Linear Regulator works by comparing the output voltage of the Boost, Buck, or Buck-Boost regulator to a reference voltage, usually an internal bandgap voltage reference. When the output voltage exceeds the reference voltage, the regulator operates in the cutoff region and no current is drawn from the output to the load. When the output voltage is less than the reference voltage, the regulator operates in the linear region and current is drawn from the output to the load to maintain the desired output voltage.The NCP4589DSQ25T1G also includes an over-temperature protection and current-limit protection circuit that protects both the regulator and the device it is regulating. The device also includes an ultra-low power standby current, allowing it to maintain precision regulation even when Operating in ECO mode.

Conclusion

The NCP4589DSQ25T1G is a low-voltage, low-power integrated voltage regulator from ON Semiconductor Corporation. It combines a primary mover such as a Boost, Buck, or Buck-Boost switching regulator and an accurate linear regulator stage to provide high output voltage accuracy with very low quiescent current and fast transient response. The device is suitable for battery-operated and/or portable electronics, Bluetooth and other wireless technology devices, exacting medical and home healthcare applications, industrial, automotive, and IoT control applications. The NCP4589DSQ25T1G also features an over-temperature and current-limit protection circuit and ultra-low power standby current.

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