MAX6375MAX6380 19-1721 Rev 3 12/05 3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors General Description Features The MAX6375MAX6380 are ultra-low-power circuits Ultra-Low 500nA Supply Current used for monitoring battery, power-supply, and regulat- (MAX6375/MAX6376/MAX6377) ed system voltages. Each detector contains a precision Thresholds Available from 2.20V to 4.63V in bandgap reference, comparator, and internally trimmed Approximately 100mV Increments resistors that set specified trip threshold voltages. 2.5% Threshold Accuracy Over Temperature These devices provide excellent circuit reliability and low cost by eliminating external components and Low Cost adjustments when monitoring nominal system voltages Available in Three Versions: Push-Pull OUT, from 2.5V to 5V. Push-Pull OUT, and Open-Drain OUT These circuits perform a single function: they assert an Power-Supply Transient Immunity output signal whenever the V supply voltage falls CC No External Components below a preset threshold. The devices are differentiated by their output logic configurations and preset thresh- Available in Either a 3-Pin SC70 old voltages. The MAX6375/MAX6378 (push-pull) and or 3-Pin SOT23 Package MAX6377/MAX6380 (open-drain) have an active-low Ordering Information output (OUT is logic low when V is below V ). The CC TH MAX6376/MAX6379 have an active-high push-pull out- PART* TEMP RANGE PIN-PACKAGE put (OUT is logic high when V is below V ). All CC TH MAX6375UR -T -40C to +85C 3 SOT23-3 parts are guaranteed to be in the correct output logic state for V down to 1V. The detector is designed to MAX6375XR -T -40C to +85C 3 SC70-3 CC ignore fast transients on V . The MAX6375/MAX6376/ CC MAX6376UR -T -40C to +85C 3 SOT23-3 MAX6377 have voltage thresholds between 2.20V and MAX6376XR -T -40C to +85C 3 SC70-3 3.08V in approximately 100mV increments. The * The MAX6375/MAX6376/MAX6377 are available in factory-preset MAX6378/MAX6379/MAX6380 have voltage thresholds thresholds from 2.20V to 3.08V, in approximately 0.1V increments. between 3.30V and 4.63V in approximately 100mV The MAX6378/MAX6379/MAX6380 are available in factory-preset increments. thresholds from 3.30V to 4.63V, in approximately 0.1V increments. Ultra-low supply current of 500nA (MAX6375/MAX6376/ Choose the desired threshold suffix from Table 1 and insert it in MAX6377) makes these parts ideal for use in portable the blank spaces following R. There are 21 standard versions, equipment. All six devices are available in a space-sav- with a required order increment of 2500 pieces. Sample stock is generally held on the standard versions only (see the Selector ing SC70 package or in a tiny SOT23 package. Guide). The required order increment is 10,000 pieces for non- standard versions (Table 2). Contact factory for availability. All Applications devices available in tape-and-reel only. Devices are available in both leaded and lead-free packaging. Precision Battery Monitoring Specify lead-free by replacing -T with +T when ordering. Load Switching/Power Sequencing Ordering information continued at end of data sheet Power-Supply Monitoring in Digital/Analog Systems Portable/Battery-Powered Equipment Pin Configuration TOP VIEW GND 1 OUT(OUT) 1 MAX6375XR MAX6375UR V 3 3 V CC CC MAX6380XR MAX6380UR Selector Guide appears at end of data sheet. OUT(OUT) 2 GND 2 SC70-3 SOT23-3 ( ) ARE FOR MAX6376/MAX6379 ONLY. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.3-Pin, Ultra-Low-Power SC70/SOT23 Voltage Detectors ABSOLUTE MAXIMUM RATINGS Terminal Voltage (with respect to GND) Continuous Power Dissipation (T = +70C) A V ...........................................................................-0.3V to +6V 3-Pin SC70 (derate 2.17mW/C above +70C)...........174mW CC OUT, OUT (push-pull) ................................-0.3V to (V + 0.3V) 3-Pin SOT23 (derate 4mW/C above +70C)..............320mW CC OUT (open-drain) .....................................................-0.3V to +6V Operating Temperature Range ...........................-40C to +85C Input Current (V ).............................................................20mA Storage Temperature Range .............................-65C to +150C CC Output Current (OUT, OUT)................................................20mA Junction Temperature......................................................+150C Lead Temperature (soldering, 10s) .................................+300C 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 (V = full range, T = -40C to +85C, unless otherwise noted. Typical values are at T = +25C and V = 3V.) (Note 1) CC A A CC PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS T = 0C to +70C 1.0 5.5 A V Operating Range V CC T = -40C to +85C 1.2 5.5 A MAX6375/76/77 only, V = 3.0V for V 2.93V, CC TH 0.5 1.0 V = 3.2V for V > 2.93V, no load Supply Current I CC TH A CC V = 5.5V, no load 1.0 1.75 CC T = +25C V -1.5% V V +1.5% A TH TH TH Voltage Threshold V Table 1 V TH T = -40C to +85C V - 2.5% V V + 2.5% A TH TH TH Voltage Threshold Tempco V /C 40 ppm/C TH V = (V + 100mV) to (V - 100mV) 20 CC TH TH Propagation Delay s V = (V - 100mV) to (V + 100mV) 42 CC TH TH OUT Output Voltage I = 1.6mA, V > 2.1V, OUT asserted 0.3 SINK CC V V (MAX6375/MAX6377/ OL I = 100A, V 1.2V, OUT asserted 0.4 SINK CC MAX6378/MAX6380) I = 500A, V = 3.2V, MAX6375 only 0.8 V SOURCE CC CC OUT Output Voltage 0.8 V V I = 800A, V = 4.5V, V 4.38V CC V OH SOURCE CC TH (MAX6375/MAX6377) I = 800A, V = V , V 4.5V 0.8 V SOURCE CC TH(MAX) TH CC I = 500A, V 2.1V, OUT asserted 0.8 V SOURCE CC CC V OH 0.8 V I = 50A, V 1.2V, OUT asserted CC SOURCE CC I = 1.2mA, V 3.2V, OUT not asserted, SINK CC 0.3 OUT Output Voltage MAX6376 only V (MAX6376/MAX6379) V OL I = 3.2mA, V 4.5V, OUT not asserted, SINK CC 0.4 V 4.38V TH I = 3.2mA, V = V , V 4.5V 0.4 SINK CC TH(MAX) TH MAX6375/MAX6376/MAX6377 6.3 Voltage Threshold mV Hysteresis MAX6378/MAX6379/MAX6380 9.5 Open-Drain OUT Output 0.1 A Leakage Current Note 1: Production tested at +25C only. Overtemperature limits are guaranteed by design, not production tested. 2 MAX6375MAX6380