LM2736YMKX

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Introduction

LM2736YMKX is a step-down converter with integrated MOSFETs that operates over an input voltage range of 4.5 V to 42 V. This device is capable of producing an output voltage from 0.6 V to 36 V with up to 4A of continuous output current. The LM2736YMKX family offers precise current limit, short circuit and thermal protection for improved system immunity.

The LM2736YMKX family includes adjustable, fixed output voltage and floating/adjustable output voltage devices. The LM2736YMKX can be used in applications such as automotive, computing, industrial, and consumer.

Application Fields for LM2736YMKX

The LM2736YMKX family of DC-DC step-down converters is well suited for applications where a compact size, fast transient response and precise voltage regulation are important. Applications include point-of-load regulation, portable electronics, disk drives and other computer peripherals, notebook computers, embedded systems, and automotive electronics

The LM2736YMKX is well suited for automotive applications as it is designed to meet the ISO/TS16949 standard and AEC-Q100 grade 1 quality requirements with an extended temperature range of -40°C to +125°C. It can be used as an input voltage regulator for many circuits such as LCD panels, navigation systems, radios, audio systems, door lock actuators, and lighting.

Working Principle of LM2736YMKX

The LM2736YMKX family offers an integrated buck topology with MOSFETs that are designed to operate efficiently at high switch frequency while delivering excellent power conversion efficiency with fast transient response. The device is capable of operating over an input voltage range of 4.5 V to 42 V and up to 4A of continuous current output.

The LM2736YMKX employs a variable frequency constant on-time (COT) control architecture. This architecture offers a compact solution that does not require an external compensation network, resulting in a cost-effective solution. The on-time is calculated by monitoring the input-output difference and a variable pulse-width is allocated periodically to the main MOSFET each cycle.

The LM2736YMKX family has built-in short-circuit, over temperature and over current protection. These features ensure safe operation during overload and short-circuit conditions. The device also includes optional soft-start and quasi-peak current sensing.

Conclusion

The LM2736YMKX is a step-down converter with integrated MOSFETs designed to operate over an input voltage range of 4.5 V to 42 V and deliver up to 4A of continuous output current. The LM2736YMKX family is well suited for applications where a compact size, fast transient response and precise voltage regulation are important, such as automotive and industrial applications. The device employs a variable frequency constant on-time control architecture which eliminates the need for an external compensation network. The LM2736YMKX family has built-in protection against short-circuit, over temperature and over current, making it an ideal solution for demanding applications.

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