MAX6895 MAXIM [Maxim Integrated Products], MAX6895 Datasheet
MAX6895
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MAX6895 Summary of contents
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... Rev 5; 10/07 General Description The MAX6895–MAX6899 is a family of small, low-power, voltage-monitoring circuits with sequencing capability. These miniature devices offer tremendous flexibility with an adjustable threshold capable of monitoring down to 0.5V and an external capacitor-adjustable time delay. These devices are ideal for use in power-supply sequencing, reset sequencing, and power-switching applications ...
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Ultra-Small, Adjustable Sequencing/Supervisory Circuits ABSOLUTE MAXIMUM RATINGS , ENABLE, ENABLE, IN......................................-0. OUT, OUT (push-pull) ................................-0. OUT, OUT (open-drain)..........................................-0.3V to +30V CDELAY......................................................-0. Output Current (all pins) ...................................................±20mA Continuous Power Dissipation (T = +70°C) ...
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... Note 2: When V CC 1.2V, the output state cannot be determined. Note 3: Guaranteed by design. Note 4: During the initial power-up _______________________________________________________________________________________ Ultra-Small, Adjustable Sequencing/Supervisory Circuits CONDITIONS ≥ 1.2V 90µA, CC SINK MAX6895/MAX6897/MAX6899 only V OL ≥ 2.25V 0.5mA CC SINK ≥ 4.5V 1mA CC SINK ≥ 2.25V 500µ ...
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... 0.9 0.6 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 I (mA) SINK ENABLE TURN-ON/OFF (MAX6896P) MAX6895 toc08 OUT 2V/div ENABLE 2V/div 100ns/div IN THRESHOLD vs. TEMPERATURE 0.5010 0.5008 0.5006 0.5004 0.5002 0.5000 0.4998 0.4996 0.4994 0.4992 0.4990 -40 -25 - 110 125 TEMPERATURE (°C) OUTPUT HIGH VOLTAGE vs ...
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... IN output changes state when V falls below 0.495V. Active-High Sequencer/Monitor Output, Push-Pull (MAX6895/MAX6899) or Open-Drain (MAX6897). OUT is asserted to its true state (OUT = high) when V and the enable input is in its true state (ENABLE = high or ENABLE = low) for the capacitor-adjusted delay period. OUT is 4 ...
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... CDELAY Figure 1. MAX6895/MAX6899 Functional Diagram Detailed Description The MAX6895–MAX6899 is a family of ultra-small, low- power, sequencing/supervisory circuits. These devices provide adjustable voltage monitoring for inputs down to 0.5V. They are ideal for use in power-supply sequenc- ing, reset sequencing, and power-switching applica- tions. Multiple devices can be cascaded for complex sequencing applications ...
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... When the voltage at CDELAY reaches 1V, the output UVLO IN ENABLE OUT t PROPA Figure 2. MAX6895A/MAX6897A Timing Diagram _______________________________________________________________________________________ Ultra-Small, Adjustable Sequencing/Supervisory Circuits asserts (OUT goes high or OUT goes low). When the output asserts, C Adjust the delay (t (with ENABLE high or ENABLE low) to OUT going = V ...
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... Ultra-Small, Adjustable Sequencing/Supervisory Circuits UVLO IN ENABLE OUT t PROPA Figure 3. MAX6896A/MAX6898A Timing Diagram UVLO IN ENABLE OUT t PROPP Figure 4. MAX6895P/MAX6897P Timing Diagram 8 _______________________________________________________________________________________ t < t PROPA t DELAY OFF t > DELAY OFF t PROPA t PROPP ...
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UVLO IN ENABLE OUT t PROPP Figure 5. MAX6896P/MAX6898P Timing Diagram UVLO IN ENABLE OUT t PROPA Figure 6. MAX6899A Timing Diagram _______________________________________________________________________________________ Ultra-Small, Adjustable Sequencing/Supervisory Circuits t DELAY ...
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... DELAY t DL ENABLE ) Applications Information The MAX6895–MAX6899 monitor the voltage on IN with above IN an external resistive divider (see R1 and R2 in the Typical Operating Circuit). Connect R1 and R2 as close possible. R1 and R2 can have very high values to minimize current consumption due to low IN leakage currents (± ...
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... GND Figure 8. Overvoltage Protection ______________________________________________________________________________________ Ultra-Small, Adjustable Sequencing/Supervisory Circuits used with a p-channel MOSFET in an overvoltage pro- tection circuit. Figure 9 shows the MAX6895 in a low- voltage sequencing application using an n-channel MOSFET. Figure 10 shows the MAX6895 used in a mul- tiple-output sequencing application Using an n-Channel Device for Sequencing ...
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... Ultra-Small, Adjustable Sequencing/Supervisory Circuits 5V BUS DC-DC EN SYSTEM ENABLE ENABLE MAX6895 OUT GND C CDELAY Figure 10. Multiple-Output Sequencing 12 ______________________________________________________________________________________ 2.5V 3.3V DC-DC EN ENABLE V ENABLE MAX6895 MAX6895 OUT GND GND C CDELAY 1.2V 1.8V DC-DC DC- ENABLE MAX6895 OUT OUT GND C C CDELAY CDELAY ...
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... Capacitor Adjustable Capacitor Adjustable Capacitor Adjustable Capacitor Adjustable 150ns Delay Capacitor Adjustable 150ns Delay Capacitor Adjustable Capacitor Adjustable Capacitor Adjustable Capacitor Adjustable Capacitor Adjustable 150ns Delay Capacitor Adjustable 150ns Delay Typical Operating Circuit 1.5V TO 5.5V 0.1µF ENABLE V CC OUT MAX6895 IN CDELAY GND C CDELAY 13 ...
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... Pin Configurations (continued) TOP VIEW OUT 4 ENABLE 3 IN TOP VIEW + ENABLE 1 6 CDELAY GND MAX6896 MAX6898 OUT MAX6899 (OUT) THIN SOT23 PROCESS: BiCMOS + 1 6 CDELAY GND MAX6895 MAX6897 OUT THIN SOT23 ( ) FOR MAX6899 ONLY. Chip Information ...
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For the latest package outline information go to www.maxim-ic.com/packages.) TOPMARK PIN 1 D MARK TOP VIEW -DRAWING NOT TO SCALE- ______________________________________________________________________________________ Ultra-Small, ...
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Ultra-Small, Adjustable Sequencing/Supervisory Circuits (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) Translation Table for Calendar Year Code TABLE 1 Calendar Year 2005 2006 Legend: ...
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For the latest package outline information go to www.maxim-ic.com/packages.) ______________________________________________________________________________________ Ultra-Small, Adjustable Sequencing/Supervisory Circuits Package Information (continued) 17 ...
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Ultra-Small, Adjustable Sequencing/Supervisory Circuits (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) Revision History Pages changed at Rev 10, ...