LM2760M5/NOPB Integrated Circuits (ICs)

Voltage - Output (Min/Fixed):	3.3V
Base Part Number:	LM2760
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	750kHz
Current - Output:	20mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	4.4V
Voltage - Input (Min):	2V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Charge Pump
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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PMIC - Voltage Regulators - DC DC Switching Regulators

The LM2760M5/NOPB is a synchronous buck regulator from Texas Instruments. It features an integrated high-side and low-side MOSFET switch with an output voltage range of 0.4 to 5.5V. As a part of the Simple Switcher family, the LM2760M5/NOPB provides efficient, small solution individual designs. This application field and working principle paper will introduce the details of the LM2760M5/NOPB ahead.

Overview of the LM2760M5/NOPB

The LM2760M5/NOPB is a buck-output, synchronous switch-mode regulator with an integrated output voltage of 0.4 to 5.5V. It is designed to operate at up to 5A of output current. This device also provides input voltage range of 3.5 to 28V. Other key features of the LM2760M5/NOPB include an output voltage accuracy rating of ±2%, an extended load regulation of ±0.2%, and an adjustable soft-start time. The operating junction temperature range is from -40 to 85 °C. Its operating frequency range is 200 to 2400 kHz.

Application Field of the LM2760M5/NOPB

The LM2760M5/NOPB is highly suitable for industrial, automotive and consumer applications. Due to its wide input and output voltage range, it is an ideal choice for applications that require low voltage and high current, such as LED backlighting, DC motor control and automotive functional systems. As for consumer applications, the LM2760M5/NOPB is also suitable for portable electronic devices such as laptops, tablets and smartphones.

Working Principle of the LM2760M5/NOPB

The LM2760M5/NOPB features a synchronous buck controller with integrated switches. It consists of a high-side MOSFET and a low-side MOSFET, an input voltage regulator (VIN), an error amplifier, and a fixed frequency oscillator. The high-side and low-side MOSFETs are connected in series. The output voltage (VOUT) is determined by a voltage divider, which is connected to the output pin (VFB) and the reference voltage (VREF).The operating principle of the LM2760M5/NOPB is simple and straightforward. It firstly compares the output voltage of equal-value resistors (which is proportional to the output voltage) to the reference voltage. Then, the comparator in the error amplifier will output a signal depending on if the output voltage is lower or higher than the reference. If the output voltage is lower than the reference, the comparator will give a positive output and the PWM signal will turn on both the low-side and high-side MOSFET switches, thus allowing the current to pass through the switches. If the output voltage is higher than the reference, the comparator will give a negative output and the PWM signal will turn off both the switches, thus stopping the flow of current.

Conclusion

The LM2760M5/NOPB from Texas Instruments is a buck-output, synchronous switch-mode regulator. It is designed to operate up to 5A of output current with input voltage range of 3.5 to 28V and output voltage range of 0.4 to 5.5V. The LM2760M5/NOPB is suitable for industrial, automotive and consumer applications, such as LED backlighting, DC motor control and portable electronic devices. The working principle of this device is based on a high-side and low-side MOSFET switch and a fixed frequency oscillator.

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