LM3263TMX/NOPB

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LM3263TMX/NOPB is a dual-channel, fixed frequency, synchronous buck step-down converter. It is a flexible power solution ideal for powering multiple loads with different voltages from fixed-voltage sources up to 16V. It offers small, low power consumption, low-profile packages, and large integrated thermal mass. Its simple but efficient architecture provides the capability to run multiple simultaneous load currents, while minimizing power dissipation.

The LM3263TMX/NOPB is designed for a wide range of applications including portable product battery management, adaptors, and telecom/datacom systems. It features an adjustable current limit and an integrated thermal loop. The device also features a wide load range (8A max). The LM3263TMX/NOPB is optimized to reduce board space, cost and enhanced flexibility.

The LM3263TMX/NOPB provides a high degree of accuracy and flexibility for systems with multiple voltages and mixed loads. It provides complete power-on reset protection and can be configured for pre-regulation or post-regulation. It supports both open-drain and push-pull logic interface for remote control.

The LM3263TMX/NOPB working principle is based on a buck topology, where two or more independent load channels are connected to one main power source. The voltage on each channel is independently adjusted using a control pin. The total output current of the LM3263TMX/NOPB is determined by the total load current, which is composed of the current for each channel. When operating in buck-mode, the output voltage can be adjusted from 0.8V up to the input voltage. In boost-mode, the output voltage can be increased up to twice the value of the input voltage.

The core of the LM3263TMX/NOPB is the on-chip synchronous rectifier, which improves efficiency, reduces output ripple and simplifies the design. It also provides a precise current limit and temperature based over-current protection. Additionally, the LM3263TMX/NOPB utilizes an integrated dynamic soft-start to reduce inrush current and minimize stress on PCB traces. This device also integrates a power good flag and a fail-safe timer to ensure reliable operation.

LM3263TMX/NOPB offers accurate and adjustable output voltage. It utilizes a low-resistive current sense resistor and selectable current limit to provide a better current monitoring and high accuracy. Its integrated over-temperature protection and Soft-start circuitry ensure the safety of the system and offer high reliability and extended life. The high-efficiency switching of the LM3263TMX/NOPB enables a wide operating temperature range from - 40℃ to +85℃, making it an ideal solution for cost-sensitive application, where temperature control and thermal management is essential.

The LM3263TMX/NOPB can be easily incorporated into any system design and offers the highest flexibility for adapting to a wide variety of voltage conditions. It is a true plug-and-play IC, which requires minimal hardware design, and includes on-chip protection features to ensure system safety under diverse environmental conditions. For these reasons, and its high efficiency, cost-effective packages and ease of use, the LM3263TMX/NOPB is an ideal power supply solution for portable product management, adaptors and telecom/datacom systems.

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