NB670GQ-Z

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The NB670GQ-Z is a high performance, low power, non-volatile low dropout (L-DO) voltage regulator. It is designed to provide a regulated output voltage in application fields such as DC/DC converters, LEDs and automotive electronics. The NB670GQ-Z is part of the NB670 family of low power L-DO voltage regulators. This family of regulators offers high accuracy, low current consumption and small size, making it an excellent choice for a variety of applications where power supply flexibility and portability are of utmost importance.

The NB670GQ-Z is a linear + switching regulator with both high-side voltage regulation and low-side voltage regulation. The high-side voltage regulation is provided by a high gain PNP common emitter amplifier and the low-side voltage regulation is provided by a low gain NPN collector-to-emitter transistor. The NB670GQ-Z also features an internal error amplifier, which allows for a high degree of accuracy over a wide range of load current and voltage. The NB670GQ-Z also has internal protection functions to ensure that the output voltage is always stable and within the required specification.

The NB670GQ-Z operates in one of two modes: voltage regulation mode and pulse width modulation (PWM) mode. In the voltage regulation mode, the regulator compares the output voltage to a user defined set point and adjusts the duty cycle of the switching circuitry to maintain the output voltage within regulation tolerance. The PWM mode is ideal for applications where the output voltage needs to be adjusted constantly to achieve the highest efficiency and lowest noise. The NB670GQ-Z offers an adjustable switching frequency, which can be set anywhere between 200kHz and 2.5MHz, and adjustable soft start time, which can be set anywhere between 50us and 2.5ms.

The NB670GQ-Z also offers a wide input voltage range, making it suitable for a variety of applications. The input voltage range can range from 2.6V to 20.0V, making the NB670GQ-Z suitable for a variety of supplies and batteries, including standard alkaline, rechargeable NiMH and lithium-ion chemistries. The NB670GQ-Z also features short circuit and overload protection, as well as an output voltage tolerance of ±2.5%.

The NB670GQ-Z is available in a variety of packages, such as SOT-223 and TSSOP-14, and is also available in lead-free, halogen-free and RoHS compliant versions. The NB670GQ-Z is designed for easy implementation, making it an ideal choice for a wide range of applications where energy efficiency, low noise and stability are essential.

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