MP6400 Low Quiescent Current Programmable-Delay Supervisory Circuit0 pages

me MP6400 Low Quiescent Current Programmable-Delay Supervisory Circuit The Future of Analog IC Technology DESCRIPTION The MP6400 family is the microprocessor (|jP) supervisory circuit which can monitor and provide reset function for system voltages from 0.4V. When either the SENSE voltage falls below its threshold (V|T) or the voltage of manual reset (MR) is pulled to a logic low, the reset signal will be asserted. The reset voltage can be factory-set for standard voltage rails from 0.9V to 5V, while the MP6400DG(J)-01 reset voltage is adjustable with an external resistor divider. When SENSE voltage and MR exceed their thresholds, RIst is driven to a logic high after a user-programmable delay time. The MP6400 has a very low quiescent current of 1.6uA typically, which makes it ideal suitable for battery-powered applications. |t provides a precision reference to achieve ±1% threshold accuracy. The reset delay time can be selected by a capacitor which is connected between Cdei_ay and GND, allowing the user to select any delay time from 2.1ms to 10s. 380ms delay time is selected by connecting the CDELAY pin to VCc, while 24ms delay time by leaving the Cdelay pin float. MP6400 is available in TSOT23 and 2mmx2mm 6-pin QFN packages. FEATURES ˕ Fixed Threshold Voltages for Standard Voltage Rails From 0.9V to 5V and Adjustable Voltage From 0.4V are Available  Low Quiescent Current: 1.6uA typ Օ Power-On Reset Generator with Adjustable Delay Time: 2.1ms to 10s  High Threshold Accuracy: ±1% typ Օ Manual Reset (mr) Input  Open-Drain RIsՋT Output  |mmune to Short Negative SENSE voltage Օ Guaranteed Reset Valid to VCC=0.8V  6 Pin TSOT23 and 2mmx2mm QFN APPLICATIONS Օ DSP or Micro controller Applications  Laptop/Desktop Computers Օ PDAs/Hand-Held Products  Portable/Battery-Powered Products Օ FPGA/AS|C Applications "MPS" and "The Future of Analog IC Technology" are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION Vcc O-1- C1 MP6400 Rev. 0.91 12/16/2009 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 1