DatasheetsPDF.com

SP809 Dataheets PDF



Part Number SP809
Manufacturers Maxlinear
Logo Maxlinear
Description 3 Pin Microprocessor Supervisor Circuit
Datasheet SP809 DatasheetSP809 Datasheet (PDF)

July 14, 2021 GENERAL DESCRIPTION The SP809 is a low power mic roproc essor (μP) supervisory circuit used to monitor power supplies in μP and digital systems. It provides applications with benefits of circuit reliability and low cost by eliminating ext ernal components. If the VCC supply voltage falls below preset threshold then a reset signal is asserted for at least 140ms after VCC has risen above the reset threshold. The SP809 was designed with a reset comparator to help identify invalid sign.

  SP809   SP809


Document
July 14, 2021 GENERAL DESCRIPTION The SP809 is a low power mic roproc essor (μP) supervisory circuit used to monitor power supplies in μP and digital systems. It provides applications with benefits of circuit reliability and low cost by eliminating ext ernal components. If the VCC supply voltage falls below preset threshold then a reset signal is asserted for at least 140ms after VCC has risen above the reset threshold. The SP809 was designed with a reset comparator to help identify invalid signals, which last less than 140ms. Low supply current (1μA) makes SP809 ideal for port able equipment. The SP809 is available in a 3 pin SOT-23 pac kage. SP809 3 Pin Microprocessor Supervisor Circuit R e v. 2.0.3 APPLICATIONS • Portable Electronic Devices • Electrical Power Meters • Digital Still Cameras • µP Power Monitoring FEATURES • Ultra Low Supply Current 1µA (typ) • Guaranteed Reset valid to VCC = 0.9V • 140ms Power-On Reset Pulse Width • Internally Fixed Threshold 2.3V, 2.6V, 2.9V, 3.1V, 4.4V, 4.6V • 1.5% Voltage Threshold Tolerance • 3 Pin SOT-23 Package Part Number SP809N SP809 Output Type Open Drain Active Low Push-Pull Low TYPICAL APPLICATION DIAGRAM Fig. 1: SP809 Application Diagram 1 SP809 3 Pin Microprocessor Supervisor Circuit ABSOLUTE MAXIMUM RATINGS The se are stress ratings only and functional operat i on o f the de vice at the se ratings or any othe r above those indicated in the operation sections of th e s pe ci fi cat i ons be low is not implied. Ex posu re t o a bsol ut e m ax im um rating conditions for e xtended periods of time may af fe ct re liability. VCC.................................................... -0.3V to 6.5V R ESET, RESET.................................. -0.3V to VCC+0.3V Output Current (RESET) ..................................... 20m A Powe r Dissipation (TA=70°C) .......................... 320m W Junction Tempe rature ..................................... 125°C Storage Tempe rature...........................-65°C to 150°C OPERATING RATINGS Input Voltage Range VCC............................. 0.9V to 6V Junction Tempe rature Range .................. -40°C to 85°C ELECTRICAL SPECIFICATIONS Spe cifications with standard type are for an Operating Temperature o f T A = 2 5 °C onl y ; l im i t s a ppl y i ng o v e r t h e f ul l O pe rating Temperature range are denoted by a “•”. Minimum and Maximum limits are guaranteed through te st, desi gn , o r statistical corre lation. Typical values represent the most likely parametric norm at TA = 25°C , and are provided for re ference purposes only. Unless otherwise indicated, TA= 25°C. Parameter O pe rating Voltage Range VCC Supply C urre nt ICC R e set Threshold VTH VCC R e set Delay tTRIP R e set Active Timeout Period tRP RESET O utput Voltage VOH RESET O utput Voltage VOL Min. 0.9 2.265 2.254 2.561 2.548 2.857 2.842 3.054 3.038 4.334 4.312 4.531 4.508 140 100 0 . 8 VCC Typ. 1.0 2.3 2.6 2.9 3.1 4.4 4.6 20 230 Max. 6.0 3.0 2.335 2.346 2.639 2.652 2.944 2.958 3.147 3.162 4.466 4.488 4.669 4.692 560 1030 Units V µA V µs ms Conditions VCC=VTH +0 . 1 V T A=+2 5 °C • TA=-40°C to 85°C T A=+2 5 °C • TA=-40°C to 85°C T A=+2 5 °C • TA=-40°C to 85°C T A=+2 5 °C • TA=-40°C to 85°C T A=+2 5 °C • TA=-40°C to 85°C T A=+2 5 °C • TA=-40°C to 85°C VCC=VTH to (VTH - 0.1V), VTH=3.1V T A=+2 5 °C • TA=-40°C to 85°C VCC=VTH + 0.1V, ISOURCE = 1.2m A V 0.3 VCC=VTH - 0.1V, ISINK = 1.2mA 207DSR00 2 Rev. 2.0.3 Parameter SP809 3 Pin Microprocessor Supervisor Circuit Min. Typ. Max. Units Conditions BLOCK DIAGRAM PIN ASSIGNMENT Fig. 2: SP809N/SP809 Block Diagram PIN DESCRIPTION Name Pin Number 207DSR00 Fig. 3: SP809 Pin Assignment D e script ion 3 Rev. 2.0.3 SP809 3 Pin Microprocessor Supervisor Circuit Name GND RESET VCC Pin Number 1 2 3 D e script ion Ground Signal Active Low O utput Pin. RESET O utput remains high while VC C is below the re set threshold Supply Voltage ORDERING INFORMATION Part Number Operating Temperature Range Lead-Free Package Packing Method SP 8 0 9 EK-L-2-3/TR SP 8 0 9 EK-L-2-6/TR SP 8 0 9 EK-L-2-9/TR SP 8 0 9 NEK-L-3 -1 /TR -40°C ≤TA≤+85°C Yes SO T23-3 Tape & R eel NOTE: For the m ost up-to-date ordering information and additional information on environmental rating, go to www.m ax line ar.com/SP809. 207DSR00 4 Rev. 2.0.3 SP809 3 Pin Microprocessor Supervisor Circuit TYPICAL PERFORMANCE CHARACTERISTICS All data taken at TA = 25°C, unless otherwise specified - Schematic and BO M from Application Information se ct i on of t hi s d a ta sh eet. Fig. 4: Supply Curre nt ve rsus Temperature Fig. 5: Powe r-Down R eset Delay versus Temperature Fig. 6: Powe r-Down R eset Delay versus Temperature Fig. 7: Powe r-Down R eset Delay versus Temperature Fig. 8: Norm alized Reset Thre shold ve rsus Temperature Fig. 9: Powe r-Up Reset Time-out ve rsus Temperature 207DSR00 5 Rev. 2.0.3 THEORY OF OPERATION μP w.


IDT74FCT373DT SP809 SP810


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)