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MAX806 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX806 Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 12 page _______________General Description These microprocessor (µP) supervisory circuits reduce the complexity and number of components required for power-supply monitoring and battery-control functions in µP systems. They significantly improve system relia- bility and accuracy compared to separate ICs or discrete components. These devices are designed for use in systems powered by 3.0V or 3.3V supplies. See the selector guide in the back of this data sheet for similar devices designed for 5V systems. The suffixes denote different reset threshold voltages: 3.075V (T), 2.925V (S), and 2.625V (R) (see the Reset Threshold section in the Detailed Description). All these parts are available in 8-pin DIP and SO packages. Functions offered in this series are as follows: ________________________Applications Battery-Powered Computers and Controllers Embedded Controllers Intelligent Instruments Automotive Systems Critical µP Power Monitoring Portable Equipment ____________________________Features ♦ – R — E — S — E — T – and RESET Outputs ♦ Manual Reset Input ♦ Precision Supply-Voltage Monitor ♦ 200ms Reset Time Delay ♦ Watchdog Timer (1.6s timeout) ♦ Battery-Backup Power Switching— Battery Can Exceed VCC in Normal Operation ♦ 40µA VCC Supply Current ♦ 1µA Battery Supply Current ♦ Voltage Monitor for Power-Fail or Low-Battery Warning ♦ Guaranteed – R — E — S — E — T – Assertion to VCC = 1V ♦ 8-Pin DIP and SO Packages ______________Ordering Information 3.0V/3.3V Microprocessor Supervisory Circuits ________________________________________________________________ Maxim Integrated Products 1 MAX690T/S/R MAX802T/S/R MAX804T/S/R MAX805T/S/R 0.1 μF VOUT RESET (RESET) PFO WDI R1 VBATT VCC GND GND GND VCC 0.1 μF 0.1 μF 3.6V LITHIUM BATTERY CMOS RAM μP VCC RESET NMI I/O LINE UNREGULATED DC REGULATED +3.3V OR +3.0V R2 BUS ( ) ARE FOR MAX804T/S/R, MAX805T/S/R PFI See last page for MAX704T/S/R, MAX806T/S/R. __________________Pin Configuration 1 2 3 4 8 7 6 5 DIP/SO TOP VIEW PFO VBATT RESET (RESET) WDI <MR> VOUT VCC GND PFI MAX690T/S/R MAX704T/S/R MAX802T/S/R MAX804T/S/R MAX805T/S/R MAX806T/S/R ( ) ARE FOR MAX804T/S/R, MAX805T/S/R < > ARE FOR MAX704T/S/R, MAX806T/S/R _________Typical Operating Circuits 19-0243; Rev 2; 12/05 PART** TEMP RANGE MAX690_CPA 0°C to +70°C MAX690_CSA 0°C to +70°C MAX690_C/D 0°C to +70°C Dice* 8 SO 8 Plastic DIP PIN-PACKAGE Part MAX690_EPA -40°C to +85°C MAX690_ESA -40°C to +85°C MAX690_MJA -55°C to +125°C 8 CERDIP 8 SO 8 Plastic DIP MAX690 ✓✓ ✓ ±4% ✓ ±75mV MAX704 ✓✓ ✓ ±4% ✓ ±75mV MAX802 ✓✓ ✓ ±2% ✓ ±2% MAX804 ✓✓ ✓ ±2% ✓ ±2% MAX805 ✓✓ ✓ ±4% ✓ ±75mV MAX806 ✓✓ ✓ ±2% ✓ ±2% Ordering Information continued at end of data sheet. *Contact factory for dice specifications. **These parts offer a choice of reset threshold voltage. Select the letter corresponding to the desired nominal reset threshold voltage (T = 3.075V, S = 2.925V, R = 2.625V) and insert it into the blank to complete the part number. Devices in PDIP and SO packages are available in both leaded and lead-free packaging. Specify lead free by adding the + symbol at the end of the part number when ordering. Lead free not available for CERDIP package. For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. |
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