LM3310SQX/NOPB

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In the field of power management, DC-DC switching regulators play an important role in providing consistent power supply for various electronic products. Among the DC-DC switching regulators available in the market, the LM3310SQX/NOPB from Texas Instruments is a device that stands out for its unique features.

The LM3310SQX/NOPB is a fully-integrated two-phase DC-DC step-up regulator with 1V to 4.5V input voltage range and adjustable operating frequency from 500KHz to 1.5MHz. It employs a high performance synchronous linear controller and features ultra-low current consumption, high switching transient speed, dynamic current-compensation, and a programmable current limit.

The LM3310SQX/NOPB comes as a low profile 8-pin NSOP or 8-pin TSSOP package and suits a wide range of applications that require high power density and reliable power supply such as point-of-load or date communication.

Application field

The LM3310SQX/NOPB is suitable for use in a wide range of applications, including digital cameras and data communications. Its synchronous rectification, fast transient response, and large current limit make it ideal for applications with dynamic load demands such as multimedia laptops and handhelds. Its ultra-low quiescent current also makes it ideal for battery-powered applications.

The LM3310SQX/NOPB is also suitable for use in automotive applications, thanks to its small form factor, wide operating temperature range, and built-in diagnostics that protect the device against transient voltage surges or overvoltage conditions.

Working principle

The LM3310SQX/NOPB works on the principle of Pulse Width Modulation (PWM). It has a power switch and an energy storage element, which when connected in series create an oscillatory circuit that is used to generate regulated output voltage.

The LM3310SQX/NOPB operates in two operational modes, Transition-Mode (TM) and Continuous-Conduction-Mode (CCM). In TM, the duty best cycle is kept constant and equal to Vout, whereas in CCM, it is varied accordingly as the load condition changes. Depending on the output current, the device can operate using either mode.

The LM3310SQX/NOPB also features dynamic current compensation (DCC) to ensure stable operation of the power switch at high frequencies. In high current step-up converters, the current duration increases significantly with increasing frequency and the power switch may become overstressed. The DCC algorithm in the LM3310SQX/NOPB reduces the peak current and prevents overstressing of the power switch.

Conclusion

The LM3310SQX/NOPB from Texas Instruments is a high performance, robust DC-DC step-up regulator suitable for a wide range of applications that require reliable power supply. Its built-in dynamic current-compensation algorithm ensures stable and reliable operation of the power switch over extreme switching frequencies. Its small form factor, wide operating temperature range, low power consumption, and robust diagnostic functions make it ideal for automotive, digital camera, multimedia, and battery-powered applications.

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