PT7M3808 Features Description п‚џ Power-On Reset Generator with Adjustable Delay
Time: 1.25ms to 10s.
п‚џ Very Low Quiescent Current: 2.8ВµA Typical
п‚џ High Threshold Accuracy: 0.5% Typ.
п‚џ Fixed Threshold Voltages for Standard Voltage Rails
from 0.9V to 5V and Adjustable Voltage Down to
0.4V are available. The PT7M3808G family of microprocessor supervisory
circuits monitor system voltage form 0.4V to 5.0V, asserting
an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset
( MR ) pin drops to a logic low. The RESET output
remains low for the user-adjustable delay time after the п‚џ Manual Reset ( MR ) Input. SENSE voltage and manual reset ( MR ) return above the п‚џ Open-Drain RESET Output. respective thresholds.
The PT7M3808G series use a precision reference to п‚џ Temperature Range: -40В°C to +125В°C
 Package: TDFN2.0x2.0-6L and SOT23-6L achieve 0.5% threshold accuracy for VIT ≤ 3.3 V. The reset
delay time can be set to 20ms by disconnecting the CT pin,
300ms by connecting the CT pin to VDD using a resister, or
can be user-adjusted between 1.25ms and 10s by connecting
the CT pin to an external capacitor. The PT7M3808 has a
very low typical quiescent current of 2.8uA so it is wellsuited to battery-powered applications. It is available in a
small SOT23 and an ultra-small 2.0x2.0 TDFN package, and
is fully specified over a temperature range of -40В°C to
+125В°C. Applications
п‚џ DSP or Microcontroller Applications capacitor.
п‚џ Notebook/Desktop Computers …
