LM5008SD/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

The LM5008SD/NOPB is a Cost-Effective and Highly-Integrated Synchronous Fixed Frequency Step-Down DC-DC Converter that is ideal for use as a non-isolated POL regulator. It uses a wide 5.5V to 40V input voltage range and provides up to 8 Amps of output current. It features a single stage topology, integrated power switches, and a rich set of features and protections. The device does not require an additional output inductor making it simpler to design-in. The LM5008SD/NOPB is capable of driving multiple outputs with equal voltages making it versatile for powering point-of-load (POL) regulators, FPGA/ASIC core supplies and multiple rail low-voltage power systems.

LM5008SD/NOPB Application Field

The LM5008SD/NOPB is capable of providing a regulated output voltage over a wide range of input voltage. It is ideal for applications such as 5V and 3.3V outputs, Network Switches, Servers, Telecom Power Supplies, Isolated Converters, and general point-of-load (POL) regulators. It is also suitable for powering high current FPGA/ASIC core supplies, providing many rails of voltage and current.

LM5008SD/NOPB Working Principle

The LM5008SD/NOPB is a switching regulator that utilizes a fixed frequency synchronous buck-boost topology. This is the simplest and most efficient way to convert a high input voltage to a regulated lower output voltage. In a buck-boost converter, when the input voltage is higher than the output voltage the converter acts as a step-down regulator, and when the input voltage is lower than the output voltage it acts as a step-up regulator. Since the LM5008SD/NOPB is a synchronous switching regulator, it is able to achieve higher efficiency than conventional regulator types.

The device consists of two switched power stages, a synchronous rectifier, an integrated PWM control, an output voltage setting circuit, and an output current sensing circuit. When the primary stage is active, the current in the inductor ramps up and is used to store energy. When the primary stage is inactive, the synchronous rectifier turns on and the inductor current is rectified to generate the output voltage. The LM5008SD/NOPB includes feedback loops to regulate the output voltage and limit the output current. The output voltage setting circuit can be programmed with an external resistor or can be controlled via an I2C interface. The output current sense circuit is used to monitor the output current and shut down the device if the current exceeds a user-programmed level.

Conclusion

The LM5008SD/NOPB is a highly integrated, cost-effective, synchronous fixed-frequency step-down DC-DC converter. It is suitable for powering multiple output rails with equal voltages and is ideal for applications such as network switches, servers, telecom power supplies, isolated converters, and general point-of-load (POL) regulators. It is capable of providing a regulated output voltage over a wide range of input voltage and features integrated power switches, feedback loops to regulate the output voltage, and an output current sensing circuit.

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