G752 Global Mixed-mode Technology High Accuracy Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface Features General Description The G752 is a temperature sensor, Delta-Sigma analog-to-digital converter, and digital over- temperature detector with SMBus interface. The host can query the G752 at any time to read temperature. The open-drain Over temperature Shutdown (O.S.) output becomes active when the temperature exceeds a programmable limit. This pin can operate in either “Comparator” or “Interrupt” mode. SMBus interface Programmable Trip Point (TOS) and Hysteresis (THYST) Separate open-drain output pin operates as interrupt or comparator at output Register readback capability Power up defaults permit stand-alone operation as thermostat Shutdown mode to minimize power consumption Up to 8 G752s can be connected to a single bus The host can program both the temperature alarm threshold (TOS) and the temperature at which the alarm condition goes away (THYST). In addition, the host can read back the contents of the G752’s TOS and THYST registers. The sensor powers up in Comparator mode with default thresholds of 50°C TOS 45°C THYST. for G752-1 and 80°C TOS , 75°C THYST for G752-2. Key Specifications Supply Voltage Supply Current 3.0V to 5.5V 280µA (typ) 500µA (max) 10µA(typ) operating shutdown Temperature Accuracy -10°C to 80°C ±1°C (max) -55°C to 125°C ±3°C (max) Ordering Information Applications System Thermal Management Personal Computers Office Electronics Electronic Test Equipment ORDER NUMBER MARKING TOS THYST PACKAGE (Green) G752P11U G752P12U G752-1 G752-2 50°C/45°C 80°C/75°C SOP-8 SOP-8 G752P82U G752KC2G G752-2 752-2 80°C/75°C 80°C/75°C MSOP-8 TDFN3X2-8 G752RD2U 752-2 80°C/75°C TDFN3X3-8 Note: P1: SOP-8 P8: MSOP-8 RD: TDFN3X3-8 KC:TDFN3X2-8 1 & 2: Bonding Code U & G: Tape & Reel Pin Configuration Typical Application G752 SMBDATA 1 8 +Vs SMBCLK 2 7 A0 O.S. 3 6 A1 GND 4 5 A2 +VS 3V to 5.5V 7 SOP-8/MSOP-8 G752 SMBDATA 8 1 SMBCLK 2 O.S. 3 GND 4 Thermal Pad TDFN3X2-8 7 +Vs A0 Address(Set as desired) G752 A0 A1 1 SMBCLK 2 6 A1 O.S. 3 5 A2 GND 4 Thermal Pad 8 +Vs 7 A0 6 A1 5 A2 8 6 5 A2 SMBDATA Typical Bypass 0.1µF (Unless mounted close to Processor) G752 1 3 O.S. Out To Processor Interrupt Line SMBDATA Interface 2 SMBCLK 4 O.S. Set for active low for wire OR’d multiple interrupt line TDFN3X3-8 Note: Recommend connecting the Thermal Pad to the Ground or let it keep floating. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.3 Jul 04, 2013 1