CAT8801ZTB-GT3

Power management integrated circuits (PMICs) represent an important group of devices used to control and monitor the voltages and currents in a variety of applications. PMICs provide power supply requirements with minimal resources, such as a single device to control multiple regulators, or an individual regulator to provide high accuracy or numerous functions. PMICs vary greatly in size and scope, ranging from small, low-voltage ICs to complex, large-scale ICs. Supervisors, a type of PMIC, are a specialized class of devices designed to provide voltage, current and fault monitoring and control functions.

CAT8801ZTB-GT3 is a supervisory circuit designed for a variety of applications and can be used by existing and new designs. The CAT8801ZTB-GT3 is specifically designed to provide voltage, current and fault monitoring and control functions. The device provides a wide range of monitoring, control, and protection functions in a single, compact device. The device includes four inputs: three monitoring inputs, two digital outputs and two user-selectable under-voltage-lockout levels, with an adjustable input-voltage monitoring range.

The CAT8801ZTB-GT3 is used in applications such as power-on reset (POR), power-down reset (PDR), system reset, battery voltage monitor, and circuit protection. To enable the detection of system-level events, the device also contributes to the optional function of device low power standby mode for extended life and reliability. Additional features include single-wire current monitoring, programmable hysteresis, programmable watchdog timer, over-temperature monitoring, input glitches monitor, and over-current shutdown with time delay.

The CAT8801ZTB-GT3 operates in the voltage range of 2.5V to 5.5V, with 12 pins of micro-power, space-saving package, such as MSOP-8, SSOP-8 and UMSOP-5. The device draws an extremely low supply current when in shutdown mode, ensuring that the system is maintained in an “off” state.

The basic operation of the CAT8801ZTB-GT3 is to monitor the input voltage level and the current signals. If a predefined level is exceeded or a fault state is detected the digital outputs are triggered. This can be used to trigger a Power-On Reset (POR), to halt the system while waiting for input power to become stable, or to inform the system that the voltage or current levels have exceeded their pre-defined thresholds.

The CAT8801ZTB-GT3 also has features such as an under-voltage lockout (UVLO) that provides two user-selectable thresholds for detecting the power supply state. This feature can be used to prevent the device from being powered on until the power supply is stabilized at the user-defined level. The device also includes an over-voltage protection (OVP) with two user-defined thresholds.

The CAT8801ZTB-GT3 includes a programmable watchdog timer (WDT) that can be used to initiate system reset when the user-defined timeout period expires. The watchdog timer can be used to detect system malfunctions and enable the reset so that the system can be restored to a known working state. It also features an over-temperature monitor that can be used to initiate system reset when the temperature exceeds the user-defined limit.

The CAT8801ZTB-GT3 provides single-wire current monitoring, streamlining monitoring and control by eliminating the need for a separate set of pins to monitor the current signal. This feature can be used to detect current overloads and allows the device to be configured to protect and control systems while reducing board complexity.

The CAT8801ZTB-GT3 also provides input glitches monitoring which is used to detect input power glitches. This feature can detect power supply transients, spikes or other voltage variations that can occur during normal operation. Upon detection, the appropriate action can be taken to prevent further damage to the device.

The CAT8801ZTB-GT3 is an ideal solution for power management designs requiring power-on reset, power-down reset, system reset, battery voltage monitoring, overcurrent protection and other safety functions. Its low power consumption, robust protection and monitoring features, and space saving packages make the CAT8801ZTB-GT3 the ideal choice for a variety of applications.