ISL6125IR

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The ISL6125IR is the latest offering for power supply controllers and power monitoring from Intersil. It is a full-featured, versatile, highly integrated device designed to provide accurate supply and voltage regulation, with additional features to provide system protection from power faults and events. The device is well suited for applications requiring both high accuracy and fast response in DC-to-DC, AC monitor, and MCU compensation circuits.

Features and Benefits

• Wide operating temperature range of -40°C to +125°C
• Single-chip high accuracy remote sense and voltage regulation
• Short-circuit and overload protection
• Low power consumption
• High input voltage limits up to 120V
• Wide voltage range: 1V to 68V
• Integrated voltage and current measurements
• Integrated 5V, 3V, 1.8V, and 0.6V LDO regulators
• Low noise low dropout regulator (LDO)

Applications

ISL6125IR is suitable for a wide range of applications in automotive, industrial, and consumer markets. These include:

• DC-DC conversion with remote sensing
• Low voltage and high current power supplies
• Li-ion battery charger controllers
• DC-DC switching mode power supplies
• External linear power supplies for motors or lighting
• Power measurements and fault detection
• Motor control systems

Working Principle

ISL6125IR is a high power, high accuracy, remote sensing, voltage regulator and monitor that integrates a variety of features to provide a low noise and flexible power solution. The device gives design engineers the control they need over remote sensing, voltage adjustment, and monitoring inputs. It is designed to produce a regulated output voltage in the range of 1V to 68V with high accuracy and low noise. The output voltage is controlled by adjusting the voltage divider connected to the FB pin or with an external reference such as the bus voltage of a microcontroller (MCU). The output voltage can be adjusted by either a programmable internal DAC, or from external voltage referrals. The power good flag indicates the status of the output voltage. If the voltage at the output is below the minimum trip point, the power good flag goes low.

The controller also supports a wide range of monitoring features. An integrated current sensor provides feedback of the output current, and is adjustable over a wide range of 0.2 to 40A. This helps to provide overload protection and inform the system of an overload condition or short circuit event. Internal over temperature protection is also provided which detects an abnormally high junction temperature, and shuts down the output until the condition is corrected.

The ISL6125IR also supports several additional features such as an integrated LDO regulator and an integrated fault logic circuit. The LDO enables the device to power the high side FET drivers, and the fault logic circuit provides an effective solution for fault detection and system protection.

Overall, ISL6125IR provides a flexible, low noise and high accuracy solution for power supply and voltage control applications. Its features make it an ideal solution for a wide range of applications in automotive, industrial, and consumer markets.

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