MAX858CSA

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MAX858CSA is a current-mode, step-up switching regulator with a wide input voltage range, high output current and low shutdown current. Its wide 2.7V to 28V input voltage range makes it suitable for automotive, industrial, and point-of-load applications. The MAX858CSA features a wide 1.23V to 5V adjustable output voltage range, high-efficiency boost switching converter, and a low-noise, high-efficiency power stage. Operating frequency is adjustable from 0.1Hz to 15MHz, allowing designers to optimize efficiency over the entire operating range.

The MAX858CSA includes an EN pin for shutdown to reduce operating current to a very low level and extends the battery life of portable applications. It is optimized for use with ceramic capacitors for better ESR and higher frequency operation. The device is built with a current mode architecture that provides fast transient response and improves the device’s line regulation performance.

The MAX858CSA comes in an 8-pin, 3mm x 3mm, ultra-thin TQFN package. It is capable of deliver up to 1A continuous output current within an input voltage range of 2.7V to 28V, and delivers up to 1.5A peak output current, making it suitable as a converter for Li-Ion/Li-polymer battery powered applications such as portable electronics and other products with small form factor.

The MAX858CSA can be programmed by external resistors and/or an external clock (up to 15 MHz) and it also includes an internal voltage reference as well as an oscillator with adjustable frequency. In addition, it requires a very small number of external components to configure the output voltage, making it easy to design with and a good choice for portable and automotive applications.

The MAX858CSA features low ripple and low operational noise, making it ideal for powering circuits with audio or video signals. Moreover, its high efficiency along with the low operating current allows the device to reduce power consumption, extend battery life, and improve battery charging times.

The MAX858CSA is designed to operate with high input voltages, making it suited for automotive, industrial, and point-of-load applications. In automotive applications, it can be used as a Power-On-Demand power supply for cooling fan control, airbag deployment and window motor control, allowing for an efficient conversion of the battery voltage. In the industrial field, it is useful for lighting, LED driver and LED cable. In point of load applications, it can be used to drive memory, displays, and microprocessors.

The MAX858CSA operates over a wide voltage range of 2.7V to 28V and is capable of delivering up to 1A continuous output current, making it suitable for applications that require high output current. It features a boost topology with an adjustable switching frequency of 0.1Hz to 15MHz and a high-efficiency synchronous rectifier that allows it to achieve greater than 90% efficiency while switching at 2.5MHz. Its peak-current mode architecture delivers fast transient response and improves the device’s line regulation performance.

In addition to its wide input voltage range and high output current, the MAX858CSA also features an EN pin for shutdown that reduces its operating current to a very low level and extends the battery life of portable applications. It also includes an oscillator with adjustable frequency, internal voltage reference, low ripple, and low operational noise, making it ideal for powering circuits with audio or video signals.

The MAX858CSA is thus an ideal choice for a wide range of automotive, industrial, and point-of-load applications that require efficient conversion of the battery voltage. Its low operating current, low ripple, and low-noise make it a great option for portable electronics, as well as applications that require high output current and fast transient response.

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