ISL88707IB846Z-TK

Power management integrated circuits (PMIC) are essential for any modern day electronic device, from smartphones to large scale production machines. PMICs can help save power, reduce system complexity, and better regulate and manage power distribution to various components in the system. Supervisor ICs form one category of PMICs and are a key component in system power management. The ISL88707IB846Z-TK is a good example of a supervisor IC, designed for the automotive industry.

Supervisor ICs are designed to monitor and protect system power, provide reset control, generate interrupt signals and generally provide a safe and secure power management to the system. The ISL88707IB846Z-TK is an automotive grade supervisor IC and is primarily used in in-vehicle applications such as automotive multimedia systems. It supports resistor-programmable undervoltage and overvoltage detection and provides reset output for system power on, system power off and crash reset functions.

The ISL88707IB846Z-TK has a power supply voltage monitoring range of 4.0V to 6.05V and includes a programmable internal band gap reference with offset voltage. It has an absolute maximum rating of 7.0V, a quiescent current of 4.5 µA, and a battery supply current of 5.0 µA. It has an extended temperature range of -40°C to 125°C, making it well suited for automotive applications.

The ISL88707IB846Z-TK operates in three settings - Active mode, Sleep mode, and Shutdown mode. In Active mode, the IC is enabled and reset is not asserted. In Sleep mode, the IC is enabled but reset is asserted to prevent any further operation. Finally, in Shutdown mode, the IC is disabled and reset is also released. This helps protect the system against runaway conditions.

The ISL88707IB846Z-TK has two input pins, namely the Power Good (PG) pin and the Voltage Supply pin. The PG pin is active high, and goes high when the input voltage is below the lower trip point (Vl), or within the hysteresis range of the upper trip point (Vu). The Voltage Supply pin is used to set the trip points of the supervisor. When the voltage on this pin is unconnected, the supervisor IC sets the trip points to 4.3V, which is usually used in automotive applications.

The ISL88707IB846Z-TK also has two output pins, the Reset Output (RO) pin and the Interrupt Output (IO) pin. The RO pin is active low and is used to control the reset signal to the system. It goes low when the voltage drops below Vl, or if the voltage is above Vu and then drops below Vu with a hysteresis of +/- 30mV. The IO pin is an interrupt signal that is used to signal an overvoltage or undervoltage condition. It is an active low signal and goes low when the voltage is respectively greater than Vu or less than Vl.

The ISL88707IB846Z-TK is a good example of a supervisor IC designed for automotive applications. It offers robust power monitoring and reset control, helping to ensure safe and secure operation of the system. Its extended temperature range, low quiescent current, and low battery supply current make it a top choice for automotive products, and it has become a popular choice for in-vehicle multimedia systems.