MAX6693

The MAX6693 is specified for an operating temperature range of -40°C to +125°C and is available in a 20-pin TSSOP package. The MAX6693 precision multichannel temperature sensor monitors its own temperature and the temperatures of up to six external diode-connected transistors. When the measured temperature of a channel exceeds the respective threshold, a status bit is set in one of the status registers. Two open-drain outputs of MAX6693, OVERT and ALERT, assert corresponding to these bits in the status register. All temperature channels have programmable alert thresholds. Channels 1, 4, 5, and 6 also have programmable overtemperature thresholds. The 2-wire serial interface supports the standard system management bus (SMBus?)protocols: write byte, read byte, send byte, and receive byte for reading the temperature data and programming the alarm thresholds.

The features of MAX6693 can be summarized as (1)six thermal-diode inputs; (2)beta compensation (channel 1); (3)local temperature sensor; (4)1.5°C remote temperature accuracy (+60°C to +100°C); (5)temperature monitoring begins at POR for failsafe system protection; (6)ALERT and OVERT outputs for interrupts, throttling, and shutdown; (7)STBY input for hardware standby mode; (8)small, 20-pin TSSOP package; (9)2-wire smbus interface.

The absolute maximum ratings of MAX6693 are (1)VCC, SMBCLK, SMBDATA, ALERT, OVERT, STBY to GND: -0.3V to +6.0V; (2)DXP_ to GND: -0.3V to (VCC + 0.3V); (3)DXN_ to GND: -0.3V to +0.8V; (4)SMBDATA, ALERT, OVERT current: -1mA to +50mA; (5)DXN_ current: ±1mA; (6)continuous power dissipation (TA = +70°C)20-pin TSSOP (derate 13.6mW/°C above +70°C): 1084mW; (7)junction-to-case thermal resistance (JC)20-Pin TSSOP: 20°C/W; (8)junction-to-ambient thermal resistance (JA)20-Pin TSSOP: 73.8°C/W; (9)ESD protection (all pins, human body model): ±2kV; (10)operating temperature range: -40°C to +125°C; (11)junction temperature: +150°C; (12)storage temperature range: -65°C to +150°C; (13)lead temperature (soldering, 10s): +300°C.