MAX860ESA+

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MAX860ESA+ is a DC-DC switching regulator designed for use in various voltage power supply and charge management applications, such as for portable battery-powered applications and for industrial systems, where space and weight are limited. It is typically used as either a step-down or step-up regulator, and also offers standard voltage regulation functions. This makes it an ideal choice for when small form factor and cost savings are desired.

The MAX860ESA+ is an DC-DC switching regulator which includes a synchronous, high output peak current-mode control circuit and an adjustable current limit circuit. It has a peak efficiency of up to 96%. The device can produce outpu power up to 4A with a wide input voltage range between 4.5V and 28V.

The MAX860ESA+ utilizes Multi-Phase ControlTM, which delivers lower voltage drop across the inductor and output capacitor, resulting in less input energy loss compared to a single phase implementation. This reduces input ripple and improves thermal behavior, enabling more effective application of the device. The MAX860ESA+ can be configured to work in either Step-down, Step-up or Voltage Regulation Mode, as required.

The MAX860ESA+ is an integrated, dual-phase switching regulator, featuring a wide input voltage range, programmable output voltage, high peak current capability and low dropout opeartion. The device offers an adjustable switching frequency, an adjustable soft-start, an external enable pin, output voltage accuracy and cycle-by-cycle current limit settings.

The main working principle of the MAX860ESA+ is current-mode control. When the sense voltage is compared to a voltage reference, the error amplifier output provides a precise current for the power switch. The power switch then uses this current as a signal to turn on, allowing the current to flow from the input source to the output load. The current flowing through the inductor builds a magnetic field which is then used to store energy. When the magnetic field reaches a predetermined level, the power switch turns off, allowing the inductor to release the built-up energy to the output load.

The MAX860ESA+ also features over-current protection and a programmable peak-current limit, which helps protect the device from damaging overloads. Additionally, the device utilizes MOSFET drivers to switch the MOSFETs connected to the input and output of the device, ensuring high frequency and low-harmonic operation. The device also features an adjustable switching frequency, operational up to 1MHz, which enables the user to optimize efficiency, output ripple and size of external components.

Overall, the MAX860ESA+ is a compact and reliable device capable of providing a regulated output voltage up to 28V with a wide input voltage range as well as programmable current limit settings and a wide switching frequency range. It is an ideal choice for applications requiring an integrated, reliable DC-DC switching regulator with an adjustable current limit circuit.

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