NCP1729SN35T1G

The NCP1729SN35T1G is a monolithic step-down DC to DC converter that is used in a variety of applications from mobile and consumer equipment to industrial and communications systems. It is a high efficiency, low noise, low dropout, low voltage regulator and switching regulator that can provide low quiescent currents and very low output ripple.

It is a synchronous step-down converter that can provide output currents up to 2.5A with a fixed regulated output voltage of 3.3V or adjustable output voltages between 1.2V and 5.5V. It has a wide input voltage range of 4.5V to 14V and a wide operating temperature range of -40°C to +85°C that makes it suitable for a variety of environments and applications.

The NCP1729SN35T1G features an integrated internal power MOSFET, low profile SOT-23-6 package and 150mV regulation. It has low noise operation (14µV RMS reference noise) and a very good transient response. It also features an adjustable frequency from 200kHz to 2.2MHz, allowing the use of small size inductors and capacitors for a compact total solution.

The working principle of the NCP1729SN35T1G voltage regulator is based on the Pulse Width Modulation (PWM) control scheme. It uses a feedback loop to monitor the output voltage of the system and generate a control signal to the internal power MOSFET. This signal is then used to switch the power MOSFET on and off based on its duty cycle, thus controlling the output voltage while maintaining a constant input power or frequency.

The NCP1729SN35T1G is mainly used in mobile phones, digital cameras, mp3 players and other battery-operated consumer electronics, as well as industrial, automotive and communications systems. It is especially suitable for 2S-4S Li-Ion battery-powered applications.

In summary, the NCP1729SN35T1G is a high efficiency, low noise, low dropout, low voltage regulator and switching regulator that is suitable for a variety of applications. It has a wide input voltage range and comes in a low profile SOT-23-6 package. Its main feature is its PWM control scheme which enables very low ripple, low quiescent current and excellent transient response.