MAX761CSA

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The MAX761CSA is a popular device within the PMIC Voltage Regulators DC DC Switching Regulators family. This device is widely used for controlling the output voltage in various applications such as cellular phones, mobile devices, laptops and more. It is an integrated switching regulator device in the MAX761 family, tuned for a high step-up conversion efficiency. This integrated switching regulator offers the convenience of a few external components, a switching frequency of up to 1.2 MHz and very fast transient time. It also includes an adjustable soft-start feature which helps in limiting inrush currents.

The MAX761CSA is a full-featured device that provides a thermal shutdown sensing circuit, over current protection and output voltage control. It also features a low voltage protection feature to protect the device and the connected application when the input voltage is too low. The Soft Start capacitor threshold is adjustable with an external resistor, to help prevent a large inrush current surge.

The MAX761CSA has, as main application field, the design of high output voltage, low-power consumption DC-DC converters. The device uses Pulse Width Modulation (PWM) control to regulate the output voltage. This type of control eliminates the need for expensive large core inductors and saves cost, drawing very small quiescent currents. The device supports an operating temperature range from -40 to +125℃.

The MAX761CSA is an integrated circuit device, combining two voltage conversion stages with an onboard PWM control IC, an oscillator and a power output stage. The device uses a synchronous rectifier topology which planifies the output voltage and increases efficiency. The first stage transformer is an inductor-diode pair combination which converts the input voltage to the second stage transformer. The second stage processor is a four pin transformer with multiple secondary taps.

The MAX761CSA can be used in power management applications such as, consumer electronics, portable instruments, telecommunications, automotive, avionics and more. It is suitable for both AC and DC power applications, as well as for battery powered applications. It offers an excellent combination of efficiency, small footprint, low cost and low quiescent current.

In addition to its high step-up conversion efficiency, the MAX761CSA is also equipped with fast response time, high current capacity and many protection features. The thermal shutdown detection circuit and the over current shut down circuit ensure the safe operation of the device and prevent system damages. The device is packaged in an 8-pin surface mount package, offering excellent transfer efficiency.

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