LM27342MYX/NOPB

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The LM27342MYX/NOPB provides an efficient and reliable step-down solution for all AC/DC office and automotive applications. It is a buck-mode switching regulator designed to operate from an input voltage of 10Vdc to 60Vdc and output a regulated 5Vdc at up to 1.2A. The device is pin and package compatible with other similar products from Texas Instruments, so it can easily be used in designs already utilizing this type of switching regulator.

The LM27342MYX/NOPB belongs to the PMIC - Voltage Regulators - DC DC Switching Regulators product family. It is a non-synchronous buck converter featuring low quiescent current and adjustable output voltage, with features such as low current mode operation and fast turn-on transient response. It has integrated power MOSFETs, integrated catch diodes, frequency dithering, and fixed frequency operation. The device operates at a fixed frequency of 1MHz.

The LM27342MYX/NOPB is based on a constant-frequency architecture, which uses pulse-width modulation (PWM) to regulate the output voltage. This type of voltage regulation is more efficient than linear regulators, and it usually requires the use of an external inductor and a pair of capacitors for the output filter. Additionally, the device supports a wide input voltage range and can be easily programmed for a variety of power supply applications.

The LM27342MYX/NOPB has an adjustable output voltage range from 0.9V to 5.5V, with a 0.1V accuracy. It integrates over-temperature, over-current, under-voltage lockout (UVLO0, UVLO1, UVLO2) and fault protection functions. It also has a few features to improve the EMI performance of the system.

The LM27342MYX/NOPB has an excellent transient response, with a settle time of less than 1μs. It has an input transient clamping feature that disconnects the output from the input during an input overvoltage condition. In addition, the undervoltage lockout is adjustable, providing a maximum level of flexibility. The device includes thermal shutdown, voltage reset, wiring protection and frequency limiting.

The LM27342MYX/NOPB also has adjustable frequency synchronization, which allows the output voltage to stay in regulation even at high frequency load transients or load surges. This feature makes the device suitable for a wide range of industrial and consumer applications. It also supports the D-CAP2 Control Loop, which utilizes advanced algorithm for a tighter control loop for improved transient response and improved line and load regulation.

The LM27342MYX/NOPB is ideal for step-down applications, such as DC/DC converters, battery chargers, automotive applications, and point-of-load regulation. It provides high efficiency over a wide input voltage range and is CE compliant, making it suitable for a wide variety of applications.

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