19-1721; Rev 2; 2/03 3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors Applications Precision Battery Monitoring Load Switching/Power Sequencing Features ♦ Ultra-Low 500nA Supply Current (MAX6375/MAX6376/MAX6377) ♦ Thresholds Available from 2.20V to 4.63V in Approximately 100mV Increments ♦ ±2.5% Threshold Accuracy Over Temperature ♦ Low Cost ♦ Available in Three Versions: Push-Pull OUT, Push-Pull OUT, and Open-Drain OUT ♦ Power-Supply Transient Immunity ♦ No External Components ♦ Available in Either a 3-Pin SC70 or 3-Pin SOT23 Package Ordering Information PART* TEMP RANGE PIN-PACKAGE MAX6375UR _ _ -T -40°C to +85°C 3 SOT23-3 MAX6375XR _ _ -T -40°C to +85°C 3 SC70-3 MAX6376UR _ _ -T -40°C to +85°C 3 SOT23-3 MAX6376XR _ _ -T -40°C to +85°C 3 SC70-3 *The MAX6375/MAX6376/MAX6377 are available in factory-preset thresholds from 2.20V to 3.08V, in approximately 0.1V increments. The MAX6378/MAX6379/MAX6380 are available in factory-preset thresholds from 3.30V to 4.63V, in approximately 0.1V increments. Choose the desired threshold suffix from Table 1 and insert it in the blank spaces following R. There are 21 standard versions, with a required order increment of 2500 pieces. Sample stock is generally held on the standard versions only (see the Selector Guide). The required order increment is 10,000 pieces for nonstandard versions (Table 2). Contact factory for availability. All devices available in tape-and-reel only. Ordering information continued at end of data sheet Power-Supply Monitoring in Digital/Analog Systems Pin Configuration Portable/Battery-Powered Equipment TOP VIEW GND OUT(OUT) 1 1 MAX6375XR– MAX6380XR Selector Guide appears at end of data sheet. MAX6375UR– MAX6380UR 3 VCC OUT(OUT) 2 3 VCC GND 2 SC70-3 SOT23-3 ( ) ARE FOR MAX6376/MAX6379 ONLY. ________________________________________________________________ Maxim Integrated Products 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. 1 MAX6375–MAX6380 General Description The MAX6375–MAX6380 are ultra-low-power circuits used for monitoring battery, power-supply, and regulated system voltages. Each detector contains a precision bandgap reference, comparator, and internally trimmed resistors that set specified trip threshold voltages. These devices provide excellent circuit reliability and low cost by eliminating external components and adjustments when monitoring nominal system voltages from 2.5V to 5V. These circuits perform a single function: they assert an output signal whenever the VCC supply voltage falls below a preset threshold. The devices are differentiated by their output logic configurations and preset threshold voltages. The MAX6375/MAX6378 (push-pull) and MAX6377/MAX6380 (open-drain) have an active-low output (OUT is logic low when VCC is below VTH). The MAX6376/MAX6379 have an active-high push-pull output (OUT is logic high when VCC is below VTH). All parts are guaranteed to be in the correct output logic state for VCC down to 1V. The detector is designed to ignore fast transients on VCC. The MAX6375/MAX6376/ MAX6377 have voltage thresholds between 2.20V and 3.08V in approximately 100mV increments. The MAX6378/MAX6379/MAX6380 have voltage thresholds between 3.30V and 4.63V in approximately 100mV increments. Ultra-low supply current of 500nA (MAX6375/MAX6376/ MAX6377) makes these parts ideal for use in portable equipment. All six devices are available in a space-saving SC70 package or in a tiny SOT23 package. MAX6375–MAX6380 3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors ABSOLUTE MAXIMUM RATINGS Terminal Voltage (with respect to GND) VCC ...........................................................................-0.3V to +6V OUT, OUT (push-pull) ................................-0.3V to (VCC + 0.3V) OUT (open-drain) .....................................................-0.3V to +6V Input Current (VCC) .............................................................20mA Output Current (OUT, OUT) ................................................20mA Continuous Power Dissipation (TA = +70°C) 3-Pin SC70 (derate 2.17mW/°C above +70°C) ...........174mW 3-Pin SOT23 (derate 4mW/°C above +70°C)..............320mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Junction Temperature ......................................................+150°C Lead Temperature (soldering, 10s) .................................+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 = full range, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C and VCC = 3V.) (Note 1) PARAMETER SYMBOL VCC Operating Range Supply Current Voltage Threshold Voltage Threshold Tempco ICC VTH OUT Output Voltage (MAX6375/MAX6377) VOL VOH VOH OUT Output Voltage (MAX6376/MAX6379) VOL Voltage Threshold Hysteresis MIN TYP 1.0 5.5 TA = -40°C to +85°C 1.2 5.5 MAX6375/76/77 only, VCC = 3.0V for VTH ≤ 2.93V, VCC = 3.2V for VTH > 2.93V, no load 0.5 1.0 VCC = 5.5V, no load 1.0 1.75 TA = +25°C VTH - 1.5% VTH VTH + 1.5% TA = -40°C to +85°C VTH - 2.5% VTH VTH + 2.5% Table 1 UNITS V µA V 40 VCC = (VTH + 100mV) to (VTH - 100mV) 20 VCC = (VTH - 100mV) to (VTH + 100mV) 42 ppm/°C µs ISINK = 1.6mA, VCC > 2.1V, OUT asserted 0.3 ISINK = 100µA, VCC ≥ 1.2V, OUT asserted 0.4 V ISOURCE = 500µA, VCC = 3.2V, MAX6375 only 0.8 ✕ VCC ISOURCE = 800µA, VCC = 4.5V, VTH ≤ 4.38V 0.8 ✕ VCC ISOURCE = 800µA, VCC = VTH(MAX), VTH ≥ 4.5V 0.8 ✕ VCC ISOURCE = 500µA, VCC ≥ 2.1V, OUT asserted 0.8 ✕ VCC ISOURCE = 50µA, VCC ≥ 1.2V, OUT asserted 0.8 ✕ VCC V ISINK = 1.2mA, VCC ≥ 3.2V, OUT not asserted, MAX6376 only 0.3 ISINK = 3.2mA, VCC ≥ 4.5V, OUT not asserted, VTH ≤ 4.38V 0.4 ISINK = 3.2mA, VCC = VTH(MAX), VTH ≥ 4.5V 0.4 MAX6375/MAX6376/MAX6377 6.3 MAX6378/MAX6379/MAX6380 9.5 Open-Drain OUT Output Leakage Current Note 1: Production tested at +25°C only. Overtemperature limits are guaranteed by design, not production tested. 2 MAX TA = 0°C to +70°C ∆VTH/°C Propagation Delay OUT Output Voltage (MAX6375/MAX6377/ MAX6378/MAX6380) CONDITIONS _______________________________________________________________________________________ V mV 0.1 µA 3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors PROPAGATION DELAY (FALLING) vs. TEMPERATURE MAX6375-01 1.0 0.9 200 PROPAGATION DELAY (µs) VCC = 5V 0.6 VCC = 3.3V 0.5 0.4 0.3 0.2 0.1 100 VOD = 20mV VOD = 10mV 50 VOD = 100mV VCC = 1.2V VOD = 200mV 0 0 -20 0 20 40 60 -40 80 -20 0 20 40 60 80 TEMPERATURE (°C) TEMPERATURE (°C) PROPAGATION DELAY (RISING) vs. TEMPERATURE MAXIMUM TRANSIENT DURATION vs. THRESHOLD OVERDRIVE VOD = 10mV 120 100 500 MAX6375-03 140 MAXIMUM TRANSIENT DURATION (µs) -40 PROPAGATION DELAY (µs) 150 VOD = 20mV 80 60 VOD = 100mV 40 VOD = 200mV 20 0 MAX6375-04 SUPPLY CURRENT (µA) 0.8 0.7 MAX6375-02 SUPPLY CURRENT vs. TEMPERATURE 400 300 200 OUT/OUT IS ASSERTED ABOVE LINE 100 0 -40 -20 0 20 40 60 80 1 TEMPERATURE (°C) 10 100 1000 THRESHOLD OVERDRIVE VTH - VCC (mV) Pin Description PIN MAX6375/MAX6377/ MAX6378/MAX6380 MAX6376/MAX6379 SC70-3 SOT23-3 SC70-3 SOT23-3 1 2 1 2 NAME FUNCTION GND Ground 2 1 — — OUT Active-Low Output. OUT remains low while VCC is below the threshold. OUT is open-drain on the MAX6377/MAX6380 and push-pull on the MAX6375/MAX6378. — — 2 1 OUT Active-High Output. OUT remains high while VCC is below the threshold. 3 3 3 3 VCC Supply Voltage ______________________________________________________________________________________ 3 MAX6375–MAX6380 __________________________________________Typical Operating Characteristics (VCC = 5V, TA = +25°C, unless otherwise noted.) MAX6375–MAX6380 3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors Negative-Going VCC Transients ____________ Applications Information These devices are relatively immune to short-duration, negative-going VCC transients (glitches). The Typical Operating Characteristics show the Maximum Transient Duration vs. Threshold Overdrive graph, for which output pulses are not generated. The graph shows the maximum pulse width that a negative-going VCC transient may typically have before the devices issue output signals. As the amplitude of the transient increases, the maximum-allowable pulse width decreases. Interfacing to Different Logic Voltage Components The MAX6377/MAX6380 have an active-low, opendrain output. This output structure sinks current when OUT is asserted. Connect a pullup resistor from OUT to any supply voltage up to 5.50V (Figure 1). Select a resistor value large enough to allow a valid logic low (see Electrical Characteristics), and small enough to register a logic high while supplying all input current and leakage paths connected to the OUT line. VIN DC/DC CONVERTER REGULATED 3.0V VOUT VCC 3.6V Li+ µP VCC MAX6377 OUT SUSPEND (OPEN-DRAIN) Figure 1. Interfacing to Different Logic Voltage Components Table 1. Factory-Trimmed Reset Thresholds‡ RESET THRESHOLD VOLTAGE, VTH (V) PART MAX6375_R MAX6376_R MAX6377_R SUFFIX TA = +25°C TA = -40°C TO +85°C MIN TYP MAX MIN MAX 22 2.167 2.200 2.233 2.145 2.250 23 2.285 2.320 2.355 2.262 2.375 24 2.364 2.400 2.436 2.340 2.460 25 2.462 2.500 2.537 2.437 2.562 26 2.591 2.630 2.669 2.564 2.696 27 2.660 2.700 2.741 2.633 2.768 28 2.758 2.800 2.842 2.730 2.870 29 2.886 2.930 2.974 2.857 3.000 30 2.955 3.000 3.045 2.925 3.075 31 3.034 3.080 3.126 3.003 3.150 ‡Factory-trimmed reset thresholds are available in approximately 100mV increments with a 1.5% room-temperature variance. 4 _______________________________________________________________________________________ 3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors MAX6375–MAX6380 Table 1. Factory-Trimmed Reset Thresholds‡ (continued) RESET THRESHOLD VOLTAGE, VTH (V) PART SUFFIX MAX6378_R MAX6379_R MAX6380_R TA = +25°C TA = -40°C TO +85°C MIN TYP MAX MIN MAX 33 3.250 3.300 3.350 3.217 3.383 34 3.349 3.400 3.451 3.315 3.485 35 3.447 3.500 3.552 3.412 3.587 36 3.546 3.600 3.654 3.510 3.690 37 3.644 3.700 3.755 3.607 3.792 38 3.743 3.800 3.857 3.705 3.895 39 3.841 3.900 3.958 3.802 3.997 40 3.940 4.000 4.060 3.900 4.100 41 4.038 4.100 4.161 3.997 4.202 42 4.137 4.200 4.263 4.095 4.305 43 4.235 4.300 4.364 4.192 4.407 44 4.314 4.380 4.446 4.270 4.489 45 4.432 4.500 4.567 4.387 4.612 46 4.560 4.630 4.699 4.514 4.746 ‡Factory-trimmed reset thresholds are available in approximately 100mV increments with a 1.5% room-temperature variance. Table 2. Device Marking Codes and Minimum Order Increments PART TOP MARK TOP MARK ORDER (SC70) (SOT23) INCREMENT (k) PART TOP MARK TOP MARK ORDER (SC70) (SOT23) INCREMENT (k) MAX6375_R22-T ADH FZHD 2.5 MAX6376_R30-T — — 10 MAX6375_R23-T ADI FZHE 2.5 MAX6376_R31-T MAX6375_R24-T — — 10 MAX6377_R22-T ADO FZHL 2.5 ADP FZHM MAX6375_R25-T — — 10 2.5 MAX6377_R23-T ADB FZHN 2.5 MAX6375_R26-T ACZ FZHC 2.5 MAX6377_R24-T — — 10 MAX6375_R27-T — MAX6375_R28-T — — 10 MAX6377_R25-T — — 10 — 10 MAX6377_R26-T ACQ FZHO 2.5 MAX6375_R29-T ADJ FZHF 2.5 MAX6377_R27-T — — 10 MAX6375_R30-T — — 10 MAX6377_R28-T — — 10 MAX6375_R31-T ADK FZHG 2.5 MAX6377_R29-T ADC FZHP 2.5 MAX6376_R22-T ADL FZHH 2.5 MAX6377_R30-T — — 10 MAX6376_R23-T ADM FZHI 2.5 MAX6377_R31-T ADR FZHQ 2.5 MAX6376_R24-T — — 10 MAX6378_R33-T — — 10 — — 10 MAX6376_R25-T — — 10 MAX6378_R34-T MAX6376_R26-T ADN FZHJ 2.5 MAX6378_R35-T — — 10 MAX6376_R27-T — — 10 MAX6378_R36-T — — 10 — — 10 — — 10 MAX6376_R28-T — — 10 MAX6378_R37-T MAX6376_R29-T ADA FZHK 2.5 MAX6378_R38-T _______________________________________________________________________________________ 5 MAX6375–MAX6380 3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors Table 2. Device Marking Codes and Minimum Order Increments (continued) TOP MARK TOP MARK ORDER (SC70) (SOT23) INCREMENT (k) PART PART TOP MARK TOP MARK ORDER (SC70) (SOT23) INCREMENT (k) MAX6378_R39-T — — 10 MAX6379_R43-T — — 10 MAX6378_R40-T — — 10 MAX6379_R44-T ADE FZHW 2.5 MAX6378_R41-T — — 10 MAX6379_R45-T — — 10 MAX6378_R42-T — — 10 MAX6379_R46-T ADT FZHX 2.5 MAX6378_R43-T — — 10 MAX6380_R33-T — — 10 MAX6378_R44-T ADS FZHU 2.5 MAX6380_R34-T — — 10 MAX6378_R45-T — — 10 MAX6380_R35-T — — 10 MAX6378_R46-T ADD FZHV 2.5 MAX6380_R36-T — — 10 MAX6379_R33-T — — 10 MAX6380_R37-T — — 10 MAX6379_R34-T — — 10 MAX6380_R38-T — — 10 MAX6379_R35-T — — 10 MAX6380_R39-T — — 10 MAX6379_R36-T — — 10 MAX6380_R40-T — — 10 MAX6379_R37-T — — 10 MAX6380_R41-T — — 10 MAX6379_R38-T — — 10 MAX6380_R42-T — — 10 MAX6379_R39-T — — 10 MAX6380_R43-T — — 10 MAX6379_R40-T — — 10 MAX6380_R44-T ADU FZHY 2.5 MAX6379_R41-T — — 10 MAX6380_R45-T — — 10 MAX6379_R42-T — — 10 MAX6380_R46-T ADF FZHZ 2.5 ___________________Chip Information Selector Guide (Standard Versions**) PART NOMINAL VTH (V) MAX63 _ _ _ R46-T 4.63 MAX63 _ _ _ R44-T 4.38 MAX63 _ _ _ R31-T 3.08 MAX63 _ _ _ R29-T 2.93 MAX63 _ _ _ R26-T 2.63 MAX63 _ _ _ R23-T 2.32 MAX63 _ _ _ R22-T 2.20 **Sample stock is generally held on all standard versions. Contact factory for availability of nonstandard versions. 6 TRANSISTOR COUNT: 419 Ordering Information (continued) PART* TEMP RANGE PIN-PACKAGE MAX6377UR _ _ -T -40°C to +85°C 3 SOT23-3 MAX6377XR _ _ -T -40°C to +85°C 3 SC70-3 MAX6378UR _ _ -T -40°C to +85°C 3 SOT23-3 MAX6378XR _ _ -T -40°C to +85°C 3 SC70-3 MAX6379UR _ _ -T -40°C to +85°C 3 SOT23-3 MAX6379XR _ _ -T -40°C to +85°C 3 SC70-3 MAX6380UR _ _ -T -40°C to +85°C 3 SOT23-3 MAX6380XR _ _ -T -40°C to +85°C 3 SC70-3 *The MAX6375/MAX6376/MAX6377 are available in factory-preset thresholds from 2.20V to 3.08V, in approximately 0.1V increments. The MAX6378/MAX6379/MAX6380 are available in factory-preset thresholds from 3.30V to 4.63V, in approximately 0.1V increments. Choose the desired threshold suffix from Table 1 and insert it in the blank spaces following R. There are 21 standard versions, with a required order increment of 2500 pieces. Sample stock is generally held on the standard versions only (see the Selector Guide). The required order increment is 10,000 pieces for nonstandard versions (Table 2). Contact factory for availability. All devices available in tape-and-reel only. _______________________________________________________________________________________ 3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors SOT23 L.EPS 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_____________________ 7 © 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX6375–MAX6380 Package Information (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.)