MAX4824 Maxim, MAX4824 Datasheet
MAX4824
Related parts for MAX4824
MAX4824 Summary of contents
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... A Zener-kickback-protection circuit significantly reduces recovery time in applications where switching speed is critical. The MAX4822/MAX4824 feature a unique power-save mode where the relay current, after activation, can be reduced to a level just above the relay hold-current threshold. This mode keeps the relay activated while significantly reducing the power consumption. The MAX4822/MAX4823 feature a 10MHz SPI™ ...
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... Continuous OUT_ Current (single output turned on) ........300mA Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...
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... PARAMETER SYMBOL RELAY OUTPUT DRIVERS (OUT1–OUT8) OUT_ Drive Voltage, Power-Save On V (MAX4822) OUT_ Drive Voltage, V Power-Save On (MAX4824) OUT_ On-Resistance OUT_ Off-Leakage Current Zener Clamping Voltage V SPI TIMING (MAX4822/MAX4823) Turn-On Time (OUT_) Turn-Off Time (OUT_) SCLK Frequency Cycle Time ...
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... Fall Time (A2, A1, A0, LVL) t RESET Pulse Width SET Pulse Width CS Minimum Pulse Width t POWER-SAVE TIMING (MAX4822/MAX4824) Power-Save Delay Time Minimum PSAVE Low Time to t Power-Save Reset Note 1: Specifications at -40°C are guaranteed by design and not production tested. Note 2: Thermal shutdown disables power save from all channels to reduce power dissipation inside the device. ...
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Relay Drivers with Fast Recovery Time and Power-Save Mode (V = 3.3V +25°C, unless otherwise noted QUIESCENT SUPPLY CURRENT vs. SUPPLY VOLTAGE 180 ALL CHANNELS OFF 175 170 165 160 155 150 145 140 ...
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Relay Drivers with Fast Recovery Time and Power-Save Mode (V = 3.3V +25°C, unless otherwise noted OUT_ TURN-ON DELAY TIME vs. SUPPLY VOLTAGE 140 120 100 2.3 2.7 3.1 3.5 ...
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Relay Drivers with Fast Recovery Time and Power-Save Mode PIN NAME MAX4822 MAX4823 RESET DIN 4 4 SCLK 5 5 DOUT N. GND 8 8 OUT8 ...
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... SET overrides all parallel and serial control inputs. RESET overrides SET under all conditions. Exposed Pad. Connect exposed paddle to GND. MAX4824/MAX4825 Pin Description FUNCTION Reset Input. Drive RESET low to clear all latches and registers (all outputs are high impedance). RESET overrides all other inputs. If RESET and SET are pulled low at the same time, then RESET takes precedence ...
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... In the MAX4822, the first 8 bits determine the register address and are followed _______________________________________________________________________________________ MAX4824/MAX4825 Pin Description (continued) FUNCTION Power-Save Control. Connect a timing capacitor from PSAVE to ground. The capacitor value determines power-save timing as explained under the Applications Information section ...
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Relay Drivers with Fast Recovery Time and Power-Save Mode ADDRESS [A7...A0] ACTIVE REGISTER 00h Output Control Register—OUTR 01h ...
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... Setting N+1 Low on. 3 High High High High Figure 3. Register Address Map for MAX4824/MAX4825 For the MAX4822, if the number of data bits entered while CS is low is greater or less than 16, the shift regis- ter contains only the last 16 bits, regardless of when they were entered ...
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... The actual percentage is determined by the power-save configuration register (Figure 1). In parallel mode (MAX4824), the power-save current is fixed at 60% of the nominal current. Daisy Chaining Every time there is a write operation to the device (CS transitions from low to high), the MAX4822/MAX4824 start charging the capacitor connected to PSAVE ...
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Relay Drivers with Fast Recovery Time and Power-Save Mode connected to PSAVE. The value t PS lowing formula where µF and ms. PS For example, if ...
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Relay Drivers with Fast Recovery Time and Power-Save Mode DIN DIN DOUT MAX4823 OUT1 SCLK SCLK OUT8 CS GND PGND CS Figure 8. Daisy-Chain Configuration DIN ...
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Relay Drivers with Fast Recovery Time and Power-Save Mode DIN DIN MAX4822 PSAVE SCLK SCLK N CS Figure 10. Daisy-Chaining MAX4822s with a PSAVE Connected to an n-Channel MOSFET ______________________________________________________________________________________ 0.1 ...
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Relay Drivers with Fast Recovery Time and Power-Save Mode MAX4822/MAX4823 Functional Diagram (Serial Interface MAX4822 MAX4823 RESET SET DIN SHIFT REGISTER DOUT SCLK CS PSAVE GND MAX4822 ONLY 16 ______________________________________________________________________________________ POWER- ON RESET PSAVE POWER-SAVE CONFIGURATION ...
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... Relay Drivers with Fast Recovery Time and Power-Save Mode MAX4824/MAX4825 Functional Diagram (Parallel Interface MAX4824 MAX4825 RESET SET LVL A2 4-TO-8 DECODER PSAVE GND MAX4824 ONLY ______________________________________________________________________________________ PSAVEON/OFF ON1 CONTROL ON2 REGISTER ON3 ON4 ON5 ON6 ON7 ON8 POWER ...
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... Relay Drivers with Fast Recovery Time and Power-Save Mode TOP VIEW RESET DIN 3 MAX4822 SCLK 4 DOUT 5 THIN QFN RESET LVL 3 MAX4824 THIN QFN 18 ______________________________________________________________________________________ 15 OUT3 RESET 1 14 OUT4 PSAVE DIN 3 12 OUT5 SCLK 4 11 ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 19 © ...