LM76003RNPR

Voltage - Input (Max):	60V
Supplier Device Package:	30-WQFN (6x4)
Package / Case:	30-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	300kHz ~ 2.2MHz
Current - Output:	3.5A
Voltage - Output (Max):	57V
Voltage - Output (Min/Fixed):	1V
Series:	--
Voltage - Input (Min):	3.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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The LM76003RNPR is a DC-DC switching regulator device that is designed to deliver reliable, efficient, and accurate voltage levels. The device offers a wide input voltage supply range of 4.5 V to 36 V and includes an internal 1.8 mA low-side current limit gate drive with a 500 mA peak, which enables easy and fast interfacing with D-FET buck regulator applications. The LM76003RNPR also features a wide programmable output voltage range of 0.6V to 29.5 V and can provide a continuous load of 3 A. Additionally, the device has minimal external component count and minimal design complexity, making it an ideal fit for space-limited and cost-sensitive applications. The LM76003RNPR employs a high-speed current mode architecture with integrated MOSFETs and a fixed frequency of up to 1.2 MHz. It is capable of providing a transient response of less than 5 µs at a 10% load step and also offers current-mode control protection against over-voltage and over-current safety issues. The device also provides an external synchronization feature, allowing an external control signal to synchronize the device with the other components of the system. Additionally, the LM76003RNPR also includes a soft-start, which helps the system to reduce the inrush current upon start-up. In terms of its application field, the LM76003RNPR is suitable for distributed power system, computer motherboards, notebook PCs and other similar applications. It can also be used in a variety of industrial, communications, and consumer devices, such as UPS systems, telecom power supplies, and server/network power supplies. Its features, combined with its low power consumption, make it an ideal choice for applications where cost, size, and power efficiency are key considerations.The working principle of the LM76003RNPR is based on the buck topology, which works by switching the input voltage to the load at a high frequency in order to create an output voltage. The presence of an inductor is essential in this type of switching regulator in order to store energy. The LM76003RNPR employs an advanced PWM/PFM control loop, which allows the output voltage of the converter to be regulated by controlling the duty cycle of the switching pulses. Additionally, the device also includes a low-side current limit function, which limits the current through the MOSFET switch during start-up or overload conditions. To sum up, the LM76003RNPR is a versatile DC-DC switching regulator device that can offer reliable, efficient, and accurate voltage levels for a variety of applications. Its discrete design, consisting of MOSFETs and an inductor, allows for a cost-effective, easy to integrate, and space-saving solution. Moreover, its current-mode design provides an advanced PWM/PFM control loop and other features such as a soft-start, synchronization, and current limit functions, ensuring that the power supply is easily and safely configurable.

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