ISL97519AIUZ-TK

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ISL97519AIUZ-TK is a DC-DC switching regulator from Intersil Corporation and is a part of the PRM-15 controller family. The device is versatile, allowing it to be used in a variety of applications. This document will discuss the DC-DC switching regulator\'s application field, operating principles, as well as some of its features and benefits.

Application Field

The ISL97519AIUZ-TK DC-DC switching regulator is designed to provide ideal voltage regulation and superior performance in the areas of industrial, automotive, and medical. It is ideal for producing several outputs from a single input, allowing it to be used in a variety of applications. The regulator operates from an input voltage range of 2.7V to 15V and can provide an output from 0.2V to 15V.

The ISL97519AIUZ-TK can be used in high power applications, such as servers, storage systems, and industrial equipment. Additionally, it can be used in medium power applications, such as wireless handsets and portable equipment. Furthermore, the device is suitable for automotive applications, such as infotainment and power train.

Operating Principles

The ISL97519AIUZ-TK DC-DC switching regulator is a highly integrated, pulse width modulated (PWM) synchronous buck switching regulator with an integrated MOSFET, low output voltage ripple, and fast transient response. The device is capable of high efficiency, low input and output ripple, and low standby current. The DC-DC switching regulator adopts an industry standard small outline transistor (SOT) package.

The ISL97519AIUZ-TK switching regulator uses a regulated current to drive the integrated MOSFET, allowing for high efficiency and low heat dissipation. The device features a 0.8V feedback threshold that enables a low dropout operation mode. The source and sink current regulation helps prevent over-current events by limiting the output current to a predetermined maximum level.

The ISL97519AIUZ-TK regulator provides two types of protection features that maximize system reliability; under voltage lockout (UVLO) and over temperature protection (OTP). The UVLO feature senses when the voltage drops below a predetermined level and literally locks out the regulator until the input voltage reaches an acceptable level. The OTP feature senses when the die temperature gets too high, and automatically reduces the duty cycle to reduce the power dissipation.

Features and Benefits

The ISL97519AIUZ-TK provides several features and benefits that make it an ideal choice for a DC-DC switching regulator. Some of these features and benefits include:

• Integrated MOSFET - The device features an integrated MOSFET which improves system efficiency and power density.
• Low Output Voltage Ripple - The device features a low output voltage ripple that helps maintain a clean output voltage. This helps reduce EMI and improves system stability.
• Fast Transient Response - The device features a fast transient response that helps it maintain stable output voltage during load transients.
• High Efficiency - The device is capable of achieving high efficiency, resulting in reduced power dissipation.
• Under Voltage Lock Out - The device features an UVLO feature that senses when the voltage drops below a predetermined level and locks out the regulator.
• Over Temperature Protection - The device features an OTP feature which senses when the die temperature gets too high and reduces the duty cycle to reduce power dissipation.

The ISL97519AIUZ-TK DC-DC switching regulator from Intersil Corporation is a versatile device, allowing it to be used in a variety of applications. It features a highly efficient and low output voltage ripple design that is ideal for producing several outputs from a single input. Additionally, it provides protection features such as UVLO and OTP that help ensure system reliability.

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