NCP511SN50T1G

Current - Output:	150mA
Base Part Number:	NCP511
Supplier Device Package:	5-TSOP
Package / Case:	SOT-23-5 Thin, TSOT-23-5
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	50dB (1kHz)
Current - Supply (Max):	100µA
Current - Quiescent (Iq):	1µA
Series:	--
Voltage Dropout (Max):	0.2V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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NCP511SN50T1G Application Field And Working Principle

PMIC - Voltage Regulators - Linear are power management integrated circuits which provide voltage regulation and related functions to systems and microprocessors. The NCP511SN50T1G is a low-power, fixed and adjustable linear voltage regulator specifically designed for automotive applications. It features a low quiescent current, low-dropout voltage, fast transient response and shut-down current.The NCP511SN50T1G is mainly used in automotive and other applications that require small size, low-quiescent current and low dropout voltage. It is designed for power source efficiency, achieving a maximum of 90% efficiency at a 400-kHz switching frequency. The operating temperature range is -40°C to 125°C.The NCP511SN50T1G includes a low-dropout regulator that operates over an input voltage range of 4.5V to 18V and delivers a maximum output of 50mA (VOUT = 5V). It has a PWM or synchronous rectifier based output stage, with current-mode control, which minimizes gate charge losses, resulting in higher efficiency. The NCP511SN50T1G also includes over current, over-voltage and over-temperature protection as well as soft-start and thermal protection.In terms of working principle, the NCP511SN50T1G voltage regulator follows the principles of linear regulators. The output voltage is determined by the voltage divider formed by two resistors on the pass device, usually configured as a series op-amp. The regulator uses the voltage on the pass device, with either discrete control or feedback of the output voltage, to pull the current through, controlling the output voltage level. There is no significant energy stored, thus the regulator is able to rapidly adjust to a change in the output voltage demand from the load, allowing the use of smaller input capacitors.The NCP511SN50T1G also offers some unique features including a unique current-mirror circuit in the feedback loop which extends the voltage range of the device. This allows the regulator to achieve stable outputs within the power supply range of 4 to 18V. The low-dropout voltage allows the NCP511SN50T1G to achieve high efficiency over the full operating voltage range, making it ideal for automotive applications.The NCP511SN50T1G is a great addition to the PMIC - Voltage Regulators - Linear series, offering customers a very efficient, low-dropout voltage regulator, with a wide range of features suitable for automotive and other applications. With its high efficiency and robust protection functions, the NCP511SN50T1G is an ideal solution for powering microprocessors and other sensitive parts in power source applications.

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