G768D

www.DataSheet4U.com Global Mixed-mode Technology Inc. Two Remote Temperature Sensors and One Fan Controller with SMBus Serial Interface and System Reset Circuit Features Measures Two Remote Temperatures „ No Calibration Required „ SMBus 2-Wire Serial Interface „ Programmable Under/Over-temperature Alarms „ Programmable Thermal Shutdown Signal „ Supports SMBus Alert Response „ Accuracy: ±5°C (-40°C to + 125°C, remote) „ ±3°C (+60°C to + 100°C, remote) +4.5V to +5.5V Supply Range „ Fan speed control range: 3,000 to 30,000 rpm „ Fan speed accuracy: ±2% „ Built-in MOSFET switch „ Internal current-limit and over-temperature „ protection for fan control Watchdog for fan control „ Alarm for fan failure „ Precision Monitoring of 5V Power-Supply „ Voltage 340ms Typical Power-On Reset Pulse Width „ RESET Output Guaranteed RESET Valid to VCC=1V „ Power Supply Transient Immunity „ No External Components needed for reset „ function Small, 16-Pin SSOP Package „ G768D General Description The G768D contains a precise digital thermometer, a fan controller, and a system-reset circuit. Except for one less fan controller, G768D is backward compatible with G768B. G768D has 2 more functions, fan-failure detection and programmable thermal shutdown signal. The thermometer reports the temperature of 2 remote sensors. The remote sensors are diode-connected transistors typically a low-cost, easily mounted 2N3904 NPN type that replace conventional thermistors or thermocouples. Re...