APX803-40SRG-7

NOT RECOMMENDED FOR NEW DESIGN USE APX803S APX803/D 3-PIN MICROPROCESSOR RESET CIRCUIT Description Pin Assignments The APX803/D is used for microprocessor (µP) supervisory circuits to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with 5V, 3.3V, 3.0V powered circuits. (Top View) GND 1 APX803 These circuits perform a single function: they assert a reset signal on power up and whenever the VCC supply voltage declines below a RESET preset threshold, keeping it asserted for a fixed period of time after VCC has risen above the reset threshold. For the APX803D this period 3 VCC 2 SOT23 (SA Package) is a minimum of 1ms while for other APX803 variants it is at least 140ms. The reset comparator is designed to ignore fast transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 1V. (Top View) RESET 1 The APX803 is available with different reset thresholds suitable for operation with a variety of supply voltages, however the APX803D is available with a 2.93V threshold voltage. APX803 GND 3 V CC 2 The APX803/D have an open collector active low RESET output and compliment Diodes APX809/10 which have push-pull output stages. Low supply current makes the APX803/D ideal for use in portable equipment. The APX803/D are available in two pin out variants of the 3-pin SOT23 package. Features   Precision Monitoring of 2.5V, 3V, 3.3V, and 5V Power-Supply Voltages Fully Specified Over Temperature  Open-drain RESET Active Low    Power-On/Power Supply Glitch Reset Pulse  APX803D 2ms (Typ)  APX803 200ms (Typ) 30µA Supply Current (Typ.) Guaranteed Reset Valid to VCC = 1V     No External Components SOT23: Available in “Green” Molding Compound (No Br, Sb) Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Notes: SOT23 (SR Package) Applications      Computers Controllers Intelligent Instruments Critical µP and µC Power Monitoring Portable/Battery Powered Equipment 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain