LM3370SD-3806/NOPB

Voltage - Output (Min/Fixed):	1.6V, 1.8V
Base Part Number:	LM3370
Supplier Device Package:	16-WSON (5x4)
Package / Case:	16-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-30°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	2MHz
Current - Output:	600mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.7V
Number of Outputs:	2
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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LM3370SD-3806/NOPB is a high-speed synchronous buck regulator with integrated MOSFETs and PWM system control. It can be used to convert a +5V input to a regulated +3.3V output, with a current rating up to 40A. The LM3370SD-3806/NOPB operates over a wide input voltage range of 4V to 16V and has a high efficiency synchronous switching frequency of 1.25 MHz.The LM3370SD-3806/NOPB is part of Texas Instruments’ (TI) LM3370 family of miniaturized, high-efficiency synchronous buck regulators, optimized for voltage and current regulation in high power applications. The LM3370 family is based on TI’s patented Valley-Switching architecture, allowing for up to 95% efficiency in DC-DC buck converter applications, while still maintaining a low external component count.The LM3370SD-3806/NOPB is part of a class of switching regulators known as DC-DC converters. DC-DC converters are used to convert one DC voltage input to another DC voltage output, and typically consist of an inductor, a MOSFET, capacitors, and a controller IC. DC-DC converters can be divided into two basic types: linear regulators and switching regulators.Linear regulators, such as the LM78xx family, are the simplest form of power supply and are used to convert one input voltage to a fixed output voltage. Linear regulators function by controlling the amount of current that flows through the load, by acting as a voltage-regulated transistor. Linear regulators are limited in their efficiency and output current, and must often dissipate the difference in energy between input and output as heat. Switching regulators, like the LM3370SD-3806/NOPB, are used to convert a high-voltage DC input to a lower-voltage DC output. Unlike linear regulators, switching regulators work by rapidly switching a MOSFET between “on” and “off” states to create a pulse-width modulated (PWM) waveform. The MOSFET is switched off when the input voltage is higher than the output voltage and switched on when the output voltage is higher than the input voltage. This PWM signal is then filtered and regulated to the required output voltage. The LM3370SD-3806/NOPB is a synchronous buck converter, which means that the MOSFETs are switched on and off in synchronization with the switching frequency of the control circuit. This allows for a faster switching frequency, a higher efficiency and lower external component count than non-synchronous buck converters. The switching frequency can be programmed externally up to 1.25MHz, allowing for a wide range of applications. The LM3370SD-3806/NOPB offers additional features, such as an adjustable current limit, soft-start, and selectable forced PWM/PFM modes. The current limit is adjustable from 15A to 40A, while the soft-start mode will increase the output load more gradually, reducing inrush current. The forced PFM/PWM modes allow the converter to “sleep” in a power-saving mode at low loads, and will automatically switch to PWM mode when the load increases, providing a more energy efficient conversion.The LM3370SD-3806/NOPB is ideal for use in high efficiency, high power applications such as processor core supplies and high-brightness LED lighting. It is available in both quarter-brick (20mm x 30mm) and mid-brick (31mm x 31mm) packages and is a great solution for reducing board space and cost in IoT, wireless infrastructure, and industrial applications. In conclusion, the LM3370SD-3806/NOPB is a high-speed synchronous buck regulator with an integrated MOSFET and system control. It is a great solution for high power applications in need of a high efficiency and low external component count. The adjustable current limit and forced PFM/PWM modes allow for an even more efficient conversion, while the small footprint makes it ideal for space-sensitive applications.

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