LM3370SD-4221/NOPB Integrated Circuits (ICs)

Voltage - Output (Min/Fixed):	1.8V, 3.3V
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:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The LM3370SD-4221/NOPB is an easy-to-use step-down switching regulator from Texas Instruments. It has been specifically designed to operate from an input voltage range of 4.5V to 30V and support an output current up to 2A. It is an efficient, space-saving, low-noise and cost-effective solution for powering low-voltage micro controllers, LEDs, FPGAs and other integrated circuits.

Application Field

The LM3370SD-4221/NOPB is ideal for a range of low power applications like computers, consumer electronics, portable devices, and automotive accessories. Its features make it the perfect fit for applications where space is limited and high efficiency is required. It can be used in a wide range of projects, such as:* Automotive accessories like vehicle audio systems, Bluetooth headsets and cell phone chargers* Portable devices like laptop and tablet chargers, drones, and medical instruments* Home appliances like air conditioners, refrigerators and washing machines* Scientific instruments, security systems, and other low-power applications

Working Principle

The LM3370SD-4221/NOPB is a synchronous buck switching regulator. This means that it uses a switching circuit to reduce the voltage of an input voltage to a lower level. It can operate in either of two possible switching modes: PWM (Pulse Width Modulation) mode or pulse-skipping mode. In PWM mode, an internal oscillator controls the frequency of the switching of the circuit, enabling a steady output voltage regardless of load or input voltage conditions. In pulse-skipping mode, the circuit will switch on and off depending on the value of the input voltage and load, allowing for higher efficiency when the load is low or when the input voltage is higher. The LM3370SD-4221/NOPB is also equipped with a number of protection features to help ensure safe and reliable operation. These include: over-current protection, over-voltage protection, and thermal shutdown.

Conclusion

The LM3370SD-4221/NOPB from Texas Instruments is an efficient and low noise switching regulator that is perfect for a wide range of low power applications. Its high efficiency and easy-to-implement design make it a great choice for applications that require a steady output voltage. In addition, it has a number of safety features to help ensure safe and reliable operation.

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