AP3440FNTR-G1 Integrated Circuits (ICs)

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The AP3440FNTR-G1 is a Switching Regulator PMIC (Power Management Integrated Circuit) that provides regulated output from a variety of input power sources. This adaptation of the popular AP3440 family of PMICs designed specifically to perform in Industrial, Automotive and Consumer applications. The device provides a regulated output voltage ranging from 0.6V to 5.5V with a maximum output current sourcing of 3A. It is optimized to provide the lowest dropout voltage (280mV @ 1A) and the highest efficiency (90% @ 2A) with a constant 1A output current. The AP3440FNTR-G1 comes in a through-hole PowerPAD package with a 10-pin 1.27mm pitch. The design features auto-reset protection, cycle-by-cycle current limit, thermal monitor and programmable output voltage, making it suitable for a wide range of power management applications.

The AP3440FNTR-G1 is a DC-DC switching regulator that uses a fixed frequency current mode, PWM, to control its output voltage. The switching frequency may be adjusted from 200kHz to 1 MHz. The device supports a wide range of input voltage from 2.6V to 36V. The two input terminals are labeled VIN and GND, connecting to the input power source on the custom board design. The outputvoltage is adjustable and is programmed by connecting a resistor between the FB and GND terminals. The resistor value determines the output voltage and is calculated using the following formula: VOUT = 0.5(1+ R/580K)

The AP3440FNTR-G1 has many programmable functionsincluding adjustable Soft-Start time, adjustable output voltage, auto-rest current limiting, cycle-by-cycle limiting, and thermal shutdown. Soft startup is used to limit the inrush current during start-up and current limiting is used to protect the device in case of overcurrent or overload. The AP3440FNR-G1 also includes an over temperature protection feature that will shut the device down in case of excessive heat caused by an overload or fault. Cycle-by-cycle current limiting ensures that the maximum output current is always maintained no matter how long the load is applied.

The AP3440FNR-G1 can be easily integrated into a PCB or other system designs. It is designed to function as a stand-alone power supply with minimal external components, with the addition of an external inductor and a few input/output capacitors. The device can also be used as an integrated power solution with a wide range of Honeywell ICs for improved power module performance and efficiency. The Flexible Operating Mode feature allows the user to adjust the device configuration to optimize system efficiency and minimize noise. With its low quiescent current of 8uA, low ripple and wide input voltage range, the AP3440FNR-G1 provides a reliable and cost-effective solution for a range of system designs.

The AP3440FNR-G1 is a versatile and highly efficient DC-DC switching regulator, ideal for a wide range of power management applications. With its adjustable outputs and low quiescent current, it provides a cost-effective solution for embedded and industrial applications. The device operates over a wide input voltage range and provides a regulated output voltage over 0.6V to 5.5V, with a maximum output current sourcing of 3A. It features adjustable Soft-Start time, auto-rest current limiting, cycle-by-cycle limiting, and thermal shutdown protection. With its flexibility and low noise performance, the AP3440FNR-G1 is an ideal solution for power management applications in industrial, automotive, and consumer applications.

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