MAX6501MAX6504 19-1280 Rev 6 2/11 Low-Cost, +2.7V to +5.5V, Micropower Temperature Switches in SOT23 General Description Features The MAX6501MAX6504 low-cost, fully integrated tem- 0.5C (typical) Threshold Accuracy Over perature switches assert a logic signal when their die Full Temperature Range temperature crosses a factory-programmed threshold. No External Components Required Operating from a +2.7V to +5.5V supply, these devices Low Cost feature two on-chip, temperature-dependent voltage references and a comparator. They are available with 30A Supply Current factory-trimmed temperature trip thresholds from -45C Factory-Programmed Thresholds from to +125C in 10C increments, and are accurate to -45C to +125C in 10C Increments 0.5C (typ) or 6C (max). These devices require no external components and typically consume 30A sup- Open-Drain Output (MAX6501/MAX6503) ply current. Hysteresis is pin-selectable at 2C or 10C. Push-Pull Output (MAX6502/MAX6504) The MAX6501/MAX6503 have an active-low, open-drain Pin-Selectable 2C or 10C Hysteresis output intended to interface with a microprocessor (P) SOT23-5 Package reset input. The MAX6502/MAX6504 have an active- high, push-pull output intended to directly drive fan- Ordering Information control logic. The MAX6501/MAX6502 are offered with hot-temperature thresholds (+35C to +125C), assert- PART TEMP RANGE PIN-PACKAGE ing when the temperature is above the threshold. The MAX6501UK +T -55C to +125C 5 SOT23 MAX6503/MAX6504 are offered with cold-temperature thresholds (-45C to +15C), asserting when the tem- MAX6502UK +T -55C to +125C 5 SOT23 perature is below the threshold. MAX6503UK +T -55C to +125C 5 SOT23 The MAX6501MAX6504 are offered in eight standard MAX6504UK +T -55C to +125C 5 SOT23 temperature versions contact the factory for pricing Note: These parts are offered in eight standard temperature and availability of nonstandard temperature versions. versions with a minimum order of 2,500 pieces. To complete They are available in a 5-pin SOT23 package. the suffix information, add P or N for positive or negative trip temperature, and select an available trip point in degrees Typical Operating Circuit centigrade. For example, the MAX6501UKP065+T describes a MAX6501 in a SOT23 package with a +65C threshold. Contact the factory for pricing and availability of nonstandard +2.7V TO +5.5V temperature versions (minimum order 10,000 pieces). +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. V V CC CC Applications MAX6502 P Temperature Monitoring in High-Speed P TOVER INT Computers Temperature Control GND GND HYST GND Temperature Alarms Fan Control Selector Guide and Pin Configurations appear at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.Low-Cost, +2.7V to +5.5V, Micropower Temperature Switches in SOT23 ABSOLUTE MAXIMUM RATINGS Supply Voltage (V ) Range....................................-0.3V to +7V Output Current (all pins) .....................................................20mA CC TOVER (MAX6501)...................................................-0.3V to +7V Continuous Power Dissipation (T = +70C) A TOVER (MAX6502).....................................-0.3V to (V + 0.3V) SOT23 (derate 3.1mW/C above +70C)......................247mW CC TUNDER (MAX6503) ................................................-0.3V to +7V Operating Temperature Range .........................-55C to +135C TUNDER (MAX6504) ..................................-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +165C CC All Other Pins..............................................-0.3V to (V + 0.3V) Lead Temperature (soldering, 10s) .................................+300C CC Input Current (all pins) ........................................................20mA Soldering Temperature (reflow) .......................................+260C 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 = +2.7V to +5.5V, R = 100k (MAX6501/MAX6503 only), T = T to T , unless otherwise noted. Typical values are CC PULLUP A MIN MAX at T = +25C.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range V 2.7 5.5 V CC Supply Current I 30 85 A CC -45C to -25C -6 0.5 +6 -15C to +15C -4 0.5 +4 Temperature Threshold T C TH Accuracy (Note 2) +35C to +65C -4 0.5 +4 +75C to +125C -6 0.5 +6 HYST = GND 2 Temperature Threshold T C HYST Hysteresis HYST = V 10 CC V 0.8 x V IH CC HYST Input Threshold V (Note 3) V 0.2 x V IL CC I = 500A, V > 2.7V SOURCE CC 0.8 x V CC (MAX6502/MAX6504 only) Output Voltage High V V OH I = 800A, V > 4.5V SOURCE CC V - 1.5 CC (MAX6502/MAX6504 only) I = 1.2mA, V > 2.7V 0.3 SINK CC Output Voltage Low V V OL I = 3.2mA, V > 4.5V 0.4 SINK CC Open-Drain Output Leakage V = 2.7V, V = 5.5V (MAX6503), CC TUNDER 10 nA Current V = 5.5V (MAX6501) TOVER Note 1: 100% production tested at T = +25C. Specifications over temperature limits are guaranteed by design. A Note 2: The MAX6501MAX6504 are available with internal, factory-programmed temperature trip thresholds from -45C to +125C in +10C increments (see Selector Guide). Note 3: Guaranteed by design. 2 MAX6501MAX6504