NCP5211ADR2

Frequency - Switching:	300kHz
Base Part Number:	NCP5211
Supplier Device Package:	14-SOIC
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Frequency Control
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	70%
Series:	--
Voltage - Supply (Vcc/Vdd):	4.04 V ~ 16 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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The NCP5211ADR2 is a DC-DC switching controller designed for use in a variety of applications, from notebook and desktop computers to networking and datacenter equipment. This device is a high-performance, low-power device that offers excellent transient response and accuracy for low voltage regulation. The NCP5211ADR2 utilizes a switching topology to regulate output voltage within a very tight tolerance range.The NCP5211ADR2 is capable of operating from an input voltage range of 5V to 40V, making it suitable for applications powered by a variety of sources such as batteries and DC adapters. The device can be used to regulate either a constant voltage or a constant current source and is capable of providing up to 1.5A of load current.The NCP5211ADR2 has a range of features including current mode control, programmable output voltage, adjustable switching frequency, and a soft start function that reduces in-rush current. It also has an adjustable power save mode and an adjustable over voltage protection (OVP) feature. The OVP can be set between 6V and 42V which provides an additional layer of protection in case of a fault condition.The NCP5211ADR2 operates in both pulse-width-modulation (PWM) and pulse frequency modulation (PFM) modes. In the PWM mode, the duty cycle of the pulses is adjusted to maintain a constant output voltage. In the PFM mode, the switching frequency of the pulses is adjusted to maintain a constant output voltage. This feature allows the device to provide good power efficiency across a wide range of load current levels.The NCP5211ADR2 includes an integrated power-on reset (POR) circuit that ensures the device is reset when power is applied. An under voltage lockout (UVLO) feature is also included to ensure the device will not operate if the supply voltage falls below the minimum operating voltage level.The NCP5211ADR2 provides excellent protection for both the input and output side of the circuit. The device includes both over-voltage and under-voltage protection for the input side, as well as output over-voltage and short-circuit protection. A built-in thermal protection feature is also included to protect the device from potential damage due to excessive temperature in the external environment.Overall, the NCP5211ADR2 is an excellent choice for applications where an efficient DC-DC switching controller is needed. It offers excellent performance, low power consumption and robust protection features in a small, space-saving package.

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