ISL97651ARTZ-TK

The ISL97651ARTZ-TK is a High Voltage Micro Sequencer and Supervisory IC from Renesas which is designed for Primary Side (Non Linear) Regulation Power Supplies. This specialized power management IC combines power supply sequencing, monitoring and protection functions for off-line power supply designs ranging from simple half-bridge with primary side regulation up to complex multi-phase power systems. It offers additional features like programmable post-start up delay, enable input, soft start and control of voltage slew-rate. This IC is suitable for computing power supply, server power supply, telephone power system and game consoles.

The ISL97651ARTZ-TK has a low power operational voltage of 8V and is available in a 28-Pin TQFN package. The operating temperature range of the IC is 0°C to +85°C. The device provides both an active low enable input and an active low disable output and an adjustable soft-start control, allowing a designer to vary the voltage ramp times to meet system power requirements. It also has two programmable general purpose timing outputs which provide flexibility in directing outputs.

The key features of the ISL97651ARTZ-TK include voltage regulation and monitoring functions, programmable power-on delay and the ability to control up to 4 power rails. The IC also offers a wide range of voltage and current protection functions, including UVLO, OCP and OVP. The device also provides a programmable ‘supervisory shutdown time’ (SST) feature, which is designed to monitor the output and turn off power supply in the event of an output over-voltage condition. This helps to protect electronics from potential damages. The ISL97651ARTZ-TK also offers 45 Voltage Sequence Start Up Modes, and is available with a high accuracy oscillator circuit with output frequencies of 19 or 25 kHz.

The working principle of ISL97651ARTZ-TK is based on sequences and timings. The device has internal programmable timing and sequence features, which allow users to control up to 4 switching power supplies. The device utilizes two programmable general purpose timing outputs which can be used to direct control signals to other power management ICs in the system. Additionally, the device has a monitor circuit which is used to monitor the output voltage of the system.

The ISL97651ARTZ-TK has a built-in watchdog timer, the output of which can be used to reset the CPU or any other device in the system. This can be used to protect the device from an unresponsive CPU or any other peripheral. The device also has a soft start function which helps to avoid inrush current during startup and reduce the risk of damage due to heating. It also has an adjustable slew rate for setting the desired voltage rise rate.

The ISL97651ARTZ-TK also has integrated self-protection circuitry and fault protection. The device has a built-in under voltage lockout (UVLO) circuit which prevents the IC from turning on when the input voltage is below an defined threshold. It also has built-in over voltage protection (OVP) and over current protection (OCP) circuits. The OVP circuit enables the IC to shut down power supply in the event of an over-voltage condition and the OCP circuit enables the IC to shut down power supply in the event of an over-current condition.

The ISL97651ARTZ-TK is an ideal choice when designing computing, networking, telecom and industrial applications. The device combines power sequencing, monitoring and protection functions in one package. It helps to reduce the size of the system and reduce the circuit complexity. The device is also designed to be highly reliable and highly efficient, making it a great choice for applications requiring maximum performance.