A6986F5VTR

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A6986F5VTR is a type of DC DC Switching Regulator manufactured by Allegro Microsystems, Inc. for efficient power conversion. It is a step-down switching regulator that provides a regulated output voltage of 5V from a DC input voltage range of 4.5V to 18V. It is capable of delivering high current up to 3A with up to 90% efficiency and low ripple and noise outputs.

The A6986F5VTR provides superior line and load regulation, allowing it to maintain a regulated output voltage with high accuracy over a large input voltage and temperature range. The device is able to withstand transient voltage overshoots and undershoots, ensuring the accuracy of the regulated output voltage. The A6986F5VTR is especially suitable for use in automotive applications, where it can handle input voltage transients while providing a regulated output voltage.

A6986F5VTR is a synchronous step-down switching regulator featuring a voltage-mode control scheme with fixed frequency operation and current-mode over-current protection. Its switching frequency is programmable between 1kHz to 1MHz and the output voltage accuracy is ±2.5% at room temperature. The device features internal soft-start and current-limit circuitry to minimize any peak current during start-up.

Regulated output voltage is obtained through a voltage-mode PWM control scheme where the output voltage is compared to the feedback voltage internally. Error amplifier output is used for controlling the power switch through a driver. When the power switch turns on, inductor current rises sharply, which causes an increase in the output voltage. When the power switch turns off, inductor current is discharged to an output capacitor and ground by a diode. By this process, the output voltage is regulated to be within ±2.5% accuracy.

A6986F5VTR is graded over a wide temperature range of -40°C to 125°C and is suitable for applications requiring low output ripple and load transient response. It is available in a thermally enhanced 7-pin MLP package, which gives superior thermal performance over alternative packages. The device is highly efficient, allowing for small external parts, resulting in a compact total solution for regulating and supplying DC power.

A6986F5VTR is a highly efficient, feature-rich DC DC switching regulator suitable for a wide range of applications from automotive to consumer. Its ability to withstand transient voltage overshoots and undershoots while providing accurate output voltage makes it an ideal choice for power supply design.

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