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MAX836 Dataheets PDF



Part Number MAX836
Manufacturers Maxim
Logo Maxim
Description 4-Pin Micropower Voltage Monitors
Datasheet MAX836 DatasheetMAX836 Datasheet (PDF)

19-1137; Rev 0; 9/96 4-Pin Micropower Voltage Monitors _______________General Description The MAX836/MAX837 micropower voltage monitors contain a 1.204V precision bandgap reference and a comparator in a SOT143 package. The MAX836 has an open-drain, N-channel output driver, while the MAX837 has a push-pull output driver. Two external resistors set the trip threshold voltage. ____________________________Features o ±1.25% Precision Voltage Threshold o SOT143 Package o Low Cost o <5µA Typical Supp.

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19-1137; Rev 0; 9/96 4-Pin Micropower Voltage Monitors _______________General Description The MAX836/MAX837 micropower voltage monitors contain a 1.204V precision bandgap reference and a comparator in a SOT143 package. The MAX836 has an open-drain, N-channel output driver, while the MAX837 has a push-pull output driver. Two external resistors set the trip threshold voltage. ____________________________Features o ±1.25% Precision Voltage Threshold o SOT143 Package o Low Cost o <5µA Typical Supply Current o Open-Drain Output (MAX836) Push-Pull Output (MAX837) MAX836/MAX837 ________________________Applications Precision Battery Monitor Load Switching Battery-Powered Systems Threshold Detectors ______________Ordering Information PART* MAX836EUS-T MAX837EUS-T TEMP. RANGE -40°C to +85°C -40°C to +85°C PINMARKING PACKAGE CODE 4 SOT143 4 SOT143 AAEQ AAER *All devices available in tape-and-reel only. Contact factory for availability. __________Typical Operating Circuit VCC MAX836 ONLY GND 1.204V REF OUT __________________Pin Configuration TOP VIEW GND 1 4 OUT MAX836 MAX837 VCC VCC MAX836 MAX837 IN VCC 2 3 IN 0.1µF SOT-143 ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 4-Pin Micropower Voltage Monitors MAX836/MAX837 ABSOLUTE MAXIMUM RATINGS VCC, OUT to GND (MAX836) ....................................-0.3V to 12V IN, OUT to GND (MAX837).........................-0.3V to (VCC + 0.3V) Input Current VCC .................................................................................20mA IN.....................................................................................10mA Output Current, OUT...........................................................20mA Rate of Rise, VCC ............................................................100V/µs Continuous Power Dissipation SOT143 (derate 4mW/°C above +70°C) ......................320mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C 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. ELECTRICAL CHARACTERISTICS (VCC = +2.5V to +11.0V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER Operating Voltage Range (Note 1) SYMBOL VCC VIN = 1.16V, OUT = low Supply Current (Note 2) ICC VIN = 1.25V, OUT = high Trip Threshold Voltage Trip Threshold Voltage Hysteresis IN Operating Voltage Range (Note 1) IN Leakage Current (Note 3) Propagation Delay Glitch Immunity OUT Rise Time OUT Fall Time Output Leakage Current (Note 4) Output Voltage High Output Voltage Low Note 1: Note 2: Note 3: Note 4: tRT tFT ILOUT VOH VOL VTH VHYST VIN IIN tPL VIN = VTH VCC = 5.0V, 50mV overdrive VCC = 5.0V, 100mV overdrive VCC = 5.0V, no load (MAX837 only) VCC = 5.0V, no load (MAX836 pull-up = 10kΩ) VIN > VTHMAX (MAX836 only) VIN > VTHMAX, ISOURCE = 500µA (MAX837 only) VIN < VTHMIN, ISINK = 500µA VCC - 0.5 0.4 ±3 80 35 260 680 ±1 VIN falling VCC = 3.6V TA = +25°C TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX 1.185 1.169 1.204 1.204 6 VCC - 1 ±12 2.0 CONDITIONS MIN 2.5 3.5 TYP MAX 11 6.5 10 15 5.0 8.0 13 1.215 1.231 V mV V nA µs µs ns ns µA V V µA UNITS V VCC = full operating range VCC = 3.6V VCC = full operating range TA = +25°C TA = 0°C to +70°C VCC = 5V, IN = low to high The voltage-detector output remains in the direct state for VCC down to 1.2V when VIN ≤ VCC / 2. Supply current has a monotonic dependence on VCC (see Typical Operating Characteristics). IN leakage current has a monotonic dependence on VCC (see Typical Operating Characteristics). The MAX836 open-drain output can be pulled up to a voltage greater than VCC, but may not exceed 11V. 2 _______________________________________________________________________________________ 4-Pin Micropower Voltage Monitors __________________________________________Typical Operating Characteristics (VCC = +5V, RLOAD = 1MΩ, RPULL-UP = 10kΩ (MAX836 only), TA = +25°C, unless otherwise noted.) TRIP THRESHOLD VOLTAGE vs. TEMPERATURE MAX836/7 01 MAX836/MAX837 SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX836/7 02 SUPPLY CURRENT vs. IN VOLTAGE MAX836/7 03 1.207 TRIP THRESHOLD VOLTAGE (V) 1.206 1.205 1.204 1.203 1.202 1.201 -60 -40 5.0 16 14 SUPPLY CURRENT (µA) 12 10 8 6 4 VCC = 3.6V 2 VCC = 11V SUPPLY CURRENT (µA) 4.0 3.0 2.0 1.0 VIN = 1.22V 2 3 4 5 6 7 8 9 10 11 12 0 -20 0 20 40 60 80 100 TEMPERATURE (°C) 0 0 1 2 3 4 5 6 7 8 9 10 11 12 VCC (V) VIN (V) IN LEAKAGE CU.


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