LM2735XMFX/NOPB

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

LM2735XMFX/NOPB Application Field and Working Principle

The LM2735XMFX/NOPB is a simple, cost-effective step down DC/DC regulator IC packaged as a 5-pin SOT-23. It is rated for an output current of 1A and operates from 0.5V to 3.6V input voltage range. It offers excellent load regulation, requiring no external sense resistors, as well as very good line regulation requiring only a single external capacitor for improved performance. The LM2735XMFX/NOPB is suitable for use in battery-powered applications such as mobile phones, tablets and cellular modems. It comes in a variety of package options and is available with shutdown, suspend and over-voltage protection along with thermal shutdown.

The LM2735XMFX/NOPB is part of Texas Instruments\' range of Power Management ICs (PMICs). PMICs provide solutions to power management and supply needs across multiple industries and applications. They are used in a wide variety of products and systems, including consumer electronics, automotive, industrial, medical and many others. PMICs are typically designed to deliver voltage and current needed by the application, while providing the necessary protection against any potential fault conditions. The LM2735XMFX/NOPB is categorized as a Voltage Regulator (VR), specifically, a DC-DC switching regulator. This regulator is a switch-mode, step-down DC power converter, taking a higher input voltage and reducing it to a lower, regulated output voltage.

Basic Principle of operation

The LM2735XMFX/NOPB works on the basic principle of Pulse Width Modulation (PWM). The PWM controller works by periodically switching the output on and off to generate the required output voltage. When the output voltage deviates from the reference voltage, the Cycle-by-Cycle current limit (CCCL) circuitry automatically adjusts the duty cycle to compensate. The CCCL detection monitors the switch node voltage across the inductor and compares it to the reference voltage. If the voltage exceeds the threshold, CCCL operation reduces the duty cycle to limit the switch current.

Features and Benefits

The LM2735XMFX/NOPB DC-DC switching regulator offers a number of features and benefits, including:

• High efficiency with 1A load current and up to 94% peak efficiency
• Low quiescent current with control and feedback circuitry shut-down
• Programmable current limit and internal overvoltage protection​
• Wide input voltage range 0.5V - 3.6V
• Operating temperature range -40°C to +125°C
• Small SOT23 package
• Soft-start slope control to reduce in-rush current
• On/Off enable control​

Improved Performance

The LM2735XMFX/NOPB is designed for improved performance by utilizing an integrated low-resistance N-channel MOSFET switch and a sense resistor to provide load current feedback. The internal PWM controller regulates the output voltage by comparing the feedback voltage to the reference voltage. The internal oscillator operates at a fixed frequency and ensures a stable PWM waveform.

The LM2735XMFX/NOPB also includes input overvoltage protection and thermal protection, which can limit the IC’s output current when the IC heats up. This is achieved by a constant current clamp circuit that limits output current and a thermal cutoff circuit that shuts off the output in the event of an over-temperature condition.

Applications

The LM2735XMFX/NOPB is suitable for use in a wide range of applications. Its wide input voltage range and efficient high current output make it particularly well-suited for use in battery-powered applications such as mobile phones, tablets, cellular modems and other portable electronic devices. Additionally, its small package size and wide operating temperature range allow it to be used in high temperature environments, making it suitable for industrial and automotive applications.

The specific data is subject to PDF, and the above content is for reference