NCP512SQ15T1

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The NCP512SQ15T1 from ON Semiconductor is a high efficiency, high performance single-channel, low-noise and low-dropout linear regulator (LDO) for General Purpose applications. This device combines high current capability with excellent output voltage accuracy and low drop-out voltages. Specifically designed to meet the needs of the advanced portable and space-constrained applications, the NCP512SQ15T1’s size allows it to fit into the same space as a conventional linear regulator.

Features

• Low Dropout Voltage of 1.5 V
• High Output Current with No Heat Sinking
• Low Quiescent Current
• Input Voltage Range up to +15 V
• Output Voltage Range of 0.6 V to 5.25 V
• Output Current of 2 A
• High PSRR and Low Noise
• ESD Protection
• High Efficiency
• Stable with a Small Ceramic Capacitor
• Low Output Ripple
• Thermal Shutdown and Reverse Current Protection

NCP512SQ15T1 Application Field

NCP512SQ15T1 is designed to supply various types of low-power general-purpose applications in wide voltage range from 2.7V to 15V. Typical applications include DSC, DVC, DSP wMMC, Low-voltage, low-power current generation or a power supply for micro-controller or D/A, A/D converters. The NCP512SQ15T1 can be used in automotive and portable electronics, video and audio applications, as well as in most applications that require a low-noise, high efficiency and high current solution in limited space.

NCP512SQ15T1 Working Principle

The NCP512SQ15T1 is basically a Linear Voltage Regulator (LVR) with an on-chip voltage reference, error amplifier, and pass element. This device controls the output voltage by sensing the output current with a current-sense resistor. The current-sense resistor senses the voltage drop across itself as a result of current flowing through the device and outputs a control voltage. The control voltage is then compared to the internal voltage reference and an error amplifier is used to compare the two voltages. If the output voltage does not match the desired voltage, the error amplifier will adjust the control voltage by increasing or decreasing the base current of the pass transistor. The pass transistor then adjusts the output current and in turn the output voltage. This process is known as voltage regulation and this is the basic working principle of the NCP512SQ15T1.

Conclusion

The NCP512SQ15T1 from ON Semiconductor is a high efficiency, high performance single-channel, low-noise and low-dropout linear regulator (LDO) for General Purpose applications. This device is small in size, making it suitable for the advanced portable and space-constrained applications. The NCP512SQ15T1 has a low dropout voltage of 1.5 V and can supply up to 2 A of current with excellent output voltage accuracy. The NCP512SQ15T1 is ideal for a wide range of applications, including automotive and portable electronics, video and audio applications, as well as in most applications that require a low-noise, high efficiency and high current solution in limited space.The working principle of the NCP512SQ15T1 is the same as that of any other Linear Voltage Regulator (LVR). The output voltage is controlled by sensing the output current with a current-sense resistor and comparing it to the internal voltage reference, with an error amplifier adjusting the control voltage if needed. This process is known as voltage regulation and is the basic working principle of the NCP512SQ15T1.

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