AP1704BWG-7 Integrated Circuits (ICs)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The AP1704BWG-7 is a low-power microprocessor-controlled supervisor from Diodes Inc. It is a versatile device that assists engineers with their design requirements. It is mainly used in consumer and automotive applications. This device is employed for the primary function of monitoring system voltages in order to provide system reset, power-on-reset, watchdog timer and low-battery detector. It also offers a delay strategy for ultra-low power systems with battery back-up modes.

The AP1704BWG-7 is a type of PMIC - supervisors, offering high electrical overvoltage protection and high accuracy voltage threshold with very low power draw. It can monitor an input voltage over a wide range, so it is useful to guard a circuit from any faults which may occur on the main power supply. The device also provides a reset pulse upon assertion of the reset signal output when a system fault is detected. This reset pulse can be extended by adjusting the internal OTH pin.

The operational principle of the AP1704BWG-7 is based on a highly precise voltage comparison between the power supply voltage applied to VCC and the voltage applied to the voltage threshold pin (VTH). Under normal operation, the device allows power to be applied to the load as long as VCC is above the voltage threshold. If VCC becomes lower than the VTH voltage, the device will pull the reset output low and assert a reset signal to the system to inform about a detected fault.

The trigger level value set by the voltage reference pin can be adjusted by an external resistor network, in order to fix the voltage level for the reset signal. The reset signal output can be levels triggered or activate delay mode, by setting the internal OTH pin. The reset pulse duration can be set as long as needed with the resistor connected between the OTH pin and the VDD pin.

The AP1704BWG-7 supervisor also offers a watchdog timer feature to support more sophisticated power management applications. This feature can be activated by applying a allow voltage to the WDE pin. The watchdog timer output is in reset state until a reset activity occurs, but when it becomes active, an internal watchdog timer will start to count, resetting the circuit when it reaches the programmed timeout period.

The AP1704BWG-7 is also capable of detecting an insufficient battery condition by monitoring an external voltage. This application is suitable for ensuring that a system will automatically enter sleep mode during periods of low battery capacity. In this mode, the device will keep the system in shutdown mode until external power is applied or sufficient voltage is sensed from the battery. Low-power consumption and high-precision voltage detection are enabled by a fast discharge sink comparator with hysteresis.

In summary, the AP1704BWG-7 microprocessor controlled supervisor is a versatile device suitable for monitoring voltage rails and providing system reset, power-on-reset, watchdog timer and low battery detector functions. It offers a high-precision comparison of the power supply and threshold voltage with very low power consumption. By setting the voltage reference, the device can detect minor changes in the system’s power behavior and can reset the system automatically when needed. The watchdog timer and low-battery detector features make it an ideal choice for consumer and automotive applications.

The specific data is subject to PDF, and the above content is for reference