LM5160QPWPTQ1

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The LM5160QPWPTQ1 is an integrated DC/DC buck converter from Texas Instruments, which can deliver up to 4 A of peak output current from a wide 4.7 V to 44 V input range. LM5160QPWPTQ1 is a low cost, easy to use, and highly integrated buck converter. It integrates the necessary control logic, compensation components, field-effect transistors (FETs), and some of the associated configurable features. It is designed to step-down and regulate a supply voltage by converting a higher voltage to a lower voltage with excellent efficiency.

Typical applications of the LM5160QPWPTQ1 include switching dropout regulators, industrial and automotive systems, nomadic computing and low power point of load (PoL) converter. It is an integrated power switch, capable of managing 4 A of continuous output current with wide input range. It is designed to reduce input voltage to within a voltage range between 0.8 V and output voltage while providing constant current operation.

Features

• Input Voltage Range: 4.7 V to 44 V
• Output Voltage Range: 0.8 V to 37.5 V
• Operating Frequency: 300 kHz to 3 MHz
• Output Current: 4 A
• Power Switch: Internal FETs
• PWM Dimming Ratio: 0.1 to 100%
• Programmable Switch Frequency: 300 kHz - 3 MHz
• High Efficiency: Up to 92%
• Thermal Shutdown
• Overtemperature Protection
• Small Size: 4 mm x 4 mm
• Easy-to-use, No External Components
• No External Boot Strap Diode

Working Principle

LM5160QPWPTQ1 operates by switching the FETs on at the level of the oscillator signal, the duty cycle of this signal varies according to the output voltage. This signal alternates between off and on state at an operating frequency determined by the external resistor connected to the IFCAP pin. When the signal is off, the inductor in the buck converter will discharge its stored energy as well as the power delivered to the load. When the signal is on, the current in the inductor will increase. When the FETs switch off, the inductor will transfer the current to the output by the diode. This process will be repeated over the oscillator cycle and the current mode operation of the LM5160QPWPTQ1 provides the regulated output with excellent transient response and high efficiency.

LM5160QPWPTQ1 includes built-in over temperature and over current protection. When the device temperature exceeds the threshold, the thermal shutdown circuitry will activate, an interrupt signal will be generated, and the output voltage will be deactivated. If an over current event occurs, the FETs will be disabled, an interrupt signal will be generated, and the output voltage will be maintained until such time when the over current event is no longer present.

Conclusion

LM5160QPWPTQ1 is a high-efficiency low-cost, and easy-to-use integrated buck converter from Texas Instruments, perfect for reducing input voltage and providing a regulated output voltage. Its features such as wide input voltage range and high output current capability make it a ideal choice for industrial, automotive and nomadic computing applications. It also has integrated features like over temperature and over current protection, which ensures reliable operation of the system. If you are looking for a reliable and cost-effective DC/DC buck converter, then LM5160QPWPTQ1 might be the perfect choice for you.

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