MAX6673AXK+T

MAX6672/MAX6673 PWM Output Temperature Sensors in SC70 Packages General Description Features The MAX6672/MAX6673 are low-current temperature Simple Single-Wire PWM Output sensors with a single-wire output. These temperature Tiny SC70 Package sensors convert the ambient temperature into a 1.4kHz Low 60A (typ) Supply Current Consumption PWM output, which contains the temperature information in its duty cycle. The MAX6672 has an open-drain output 1.4kHz Nominal Frequency and the MAX6673 has a push-pull output. Choice of Outputs Open Drain (MAX6672) The MAX6672/MAX6673 operate from 2.4V to 5.5V with a maximum supply current of 150A. Both devices feature Push-Pull (MAX6673) a single-wire output that minimizes the number of pins 2.4V to 5.5V Supply Range necessary to interface with a microprocessor. The MAX6672/MAX6673 are available in 5-pin SC70 packages. Ordering Information Applications Industrial and Process Control PIN- TOP PART TEMP RANGE HVAC PACKAGE MARK Environmental Control MAX6672AXK-T -40C to +125C 5 SC70 ACQ Isolated Temperature Sensing MAX6673AXK-T -40C to +125C 5 SC70 ACR Typical Application Circuit Pin Configuration TOP VIEW C V GPIO TO CONTROL CC DOUT 1 5 V CC * SHUTDOWN MAX6672 0.1F MAX6672 MAX6673 INPUT TO TIMER/ MAX6673 N.C. 2 COUNTER GND GND 3 4 GND SC70 * PULLUP RESISTOR REQUIRED ONLY FOR THE MAX6672. 19-2458 Rev 1 4/14MAX6672/MAX6673 PWM Output Temperature Sensors in SC70 Packages Absolute Maximum Ratings Supply Voltage (V to GND) ................................ -0.3V to +6V Operating Temperature Range ......................... -40C to +125C CC DOUT to GND (MAX6672) ......................................-0.3V to +6V Storage Temperature Range ............................ -65C to +150C DOUT to GND (MAX6673) ....................... -0.3V to (V + 0.3V) Junction Temperature ......................................................+150C CC DOUT Short to GND..................................................Continuous SC70 Package ESD Protection (Human Body Model)............................ 2000V Vapor Phase (60s) ...................................................... +215C Continuous Power Dissipation (T = +70C) Infrared (15s)............................................................ +220C A 5-Pin SC70 (derate 2.5mW/C above +70C)...........200mW 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 = 2.4V to 5.5V, T = -40C to +125C, unless otherwise noted. Typical values specified at +25C and V of 3.3V.) (Note 1) CC A CC PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS T = +25C to +100C -3 +3 A T = 0C to +125C -4 +4 Temperature Error A V = 3.3V C CC (Note 2) T = -20C to +125C -5 +5 A T = -40C to -20C 3 A Nominal t Pulse Width 280 s 1 Output Low Voltage V I = 3mA 0.4 V OL SINK Output High Voltage V I = 800A (MAX6673) V - 0.5 V OH SOURCE CC Fall Time t C = 100pF 14 ns FALL LOAD Rise Time t C = 100pF (MAX6673) 96 ns RISE LOAD DOUT Open-Drain Leakage V = 6V (MAX6672) 0.1 A DOUT Current Output Capacitance 2.5 pF Power-Supply Rejection Ratio PSRR 2.4V to 5.5V, T = -25C to +125C 0.3 0.8 C/V A 2.4V to 3.6V 60 100 Supply Current I A CC 3.6V to 5.5V 70 150 Note 1: All specifications are 100% tested at T = +25C. Specification limits over temperature (T = -40C to +125C) are guaranteed A A by design, not production tested. 3 Note 2: Temperature = -200 (0.85 - T /T ) + (425 5 T /T ) - 273. T is the low time period. T is the high time period (Figure 1). 1 2 1 2 1 2 Maxim Integrated 2 www.maximintegrated.com