MicroPower Supervisory Circuit with Delay, Manual Reset, and Watchdog

Manufacturer's part number :


Manufacturer Skyworks


Description :

The AAT3532 PowerManager is a member of Skyworks' Total Power Management IC (TPMIC™) product family. It is a fully integrated device for monitoring microprocessor activity, external reset, and power supply conditions. The device holds the microprocessor in a reset condition for a minimum of 250ms while VCC is established to ensure correct system start-up. A manual reset can be initiated via a de-bounced input pin. As an additional level of protection, the AT3532 includes a watchdog timer which requires a periodic strobe input from the microprocessor to ensure correct operation. The AAT3532 has a programmable watchdog timer and voltage tolerance level. The quiescent supply current is extremely low, typically 23μA. The AAT3532 is available in a Pb-free, 8-pin SOP package and is specified over the -40°C to +85°C temperature range.

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    • Adjustable 4.5V or 4.75V Voltage Monitor
    • 250ms (min) Reset Pulse Width
    • Low Quiescent Current: Typically 23μA
    • Adjustable Watchdog Timer (150ms, 600ms, or 1200ms)
    • De-bounced Manual Reset Input
    • Operates Down to 20ns Strobe Input Pulse Width
    • No External Components
    • Temperature Range: -40° to +85°C
    • Standard 8-Pin SOP Package
    • Pin Compatible with MAX1232

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Features Similar products
Max. Supply Current (µA) 50 (CMOS), 500 (TTL)  

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Device Description MicroPower Microprocessor Reset Circuit  
Vcc Range (V) 4.5 to 5.5  
Minimum Clock Count (seconds) 1  
Operating Temperature(°C) -40 to +85  
Package SOP-8