Ultra Small Analog g Output p Temperature p Sensor with Alarm Output Pin New Product Release XC3101 Series Mobile Phone Notebook PC LCD TV Printer The XC3101 series is an ultra-small, high-accuracy temperature sensor IC with a low quiescent current. Outputs are an analog output and an N-ch open drain alarm output. The analog output uses the industry-standard temperature coefficient -11.77mV/㷄. Temperature is monitored through the range -40 㷄 to 100㷄 and a high-accuracy analog voltage is output. It is also possible to monitor temperature using an external converter. The operating input voltage range is 2.7V to 5.5V and the quiescent current is a small 3.5μA (TYP.), which are suitable specifications for monitoring the temperature of battery devices. The alarm temperature is set to 70㷄 inside the IC. When the temperature rises and exceeds the alarm temperature, alarm output is held at 㵰Low㵱. When the temperature falls by the amount of the hysteresis width from the alarm temperature, the alarm output is released to 㵰High㵱. The hysteresis width is set to 5㷄. As an option, the alarm temperature can be semi-customized within the range 50㷄 to 95㷄. The IC can be mounted in the ultra-small USPN-4 package or the industry-standard SSOT-24, enabling miniaturization of portable devices and high-density mounting. 1 Continuous temperature monitoring with a low supply current. 2 USPN-4 SSOT-24 (1.2mm x 0.9mm x 0.4mm) (2.0mm x 2.1mm x 1.1mm) Industry-standard temperature coefficient -11.77mV/㷄 X C 3101A C 70 䂓Supply Current vs. Ambient Temperature VDD=2.7V,IAOUT=1㱘A CIN=0.1F(ceramic),CL=0.1㱘F(ceramic) XC3101AC70 Analog Output Voltage:䇭VAOUT [V] Supply Current: IDD[㱘A] 5.0 4.5 4.0 VDD=3.6V 3.5 3.0 2.5 2.0 -50 -25 0 25 50 75 100 125 2.5 2.0 1.5 -11.77mV/㷄 1.6V 1.0 25͠ 0.5 -50 Ambient Temperature: [㷄] -25 0 25 50 75 100 125 Ambient Temperature: Ta [㷄] Alarm temperature specifications can be set according to the user㵭s needs. 3 䃂Alarm temperature can be semi-customized Vpull-up RPULL VDD Alarm Output VDOUT VBAT Analog Output VAOUT 㪚㪠㪥 VSS PRODUCT NAME XC3101AC70 XC3101ACxx ALARM TEMP. 70㷄 50㷄~90㷄 DESCRIPTION Standard Semi-custom 䃂In addition to 5㷄, y two options are available for the alarm temperature hysteresis width PRODUCT NAME HYSTERESIS WIDTH DESCRIPTION 㪚㪣 5㷄(TYP.) 0㷄(TYP.) 2.4㷄(TYP.) XC3101AC XC3101AA XC3101AB Standard Semi-custom Semi-custom Features Operating Voltage Range 2.7V䌾5.5V Alarm Temperature Analog Output Voltage 2.365V (TYP.) @-40㷄 1.600V (TYP.) @25㷄 Alarm Hysteresis 70㷄±4.5㷄 5㷄 (TYP.) Alarm Output Configuration N-ch Open Drain Alarm Output Logic Analog Output Temp. Coefficient 0.717V (TYP.) @100㷄 -11.77mV/㷄 (TYP.) Low Power Consumption Active Low 3.5㱘A (TYP.) @25㷄 Analog Output Temp. Range -40㷄䌾+100㷄 Packages USPN-4 Analog Temperature Accuracy ±3.5㷄 SSOT-24 www.torex.co.jp/english/ July 2011 䃂 Values shown in this sheet can be changed without any prior notice. New Product Release Ultra Small Analog Output Temperature Sensor with Alarm Output Pin XC3101 Series 4 XC3101A (2.7V Operation) vs. XC3101C (1.7V Operation) Li-ion batteries are used as the batteries of cell phones and other small portable devices. Li-ion batteries are normally charged and consumed repeatedly within the voltage range 3.0V to 4.2V. The XC3101A type is designed to operate using the voltage supplied from the Li-ion battery as a power supply for the IC. To use the temperature sensor IC within the voltage range of the Li-ion battery, the temperature sensor IC must naturally also operate within the 3.0V to 4.2V voltage range of the Li-ion battery. The operating range of the XC3101A type is 2.7V to 5.5V, and thus when the power voltage is supplied by battery, temperature monitoring in applications that always require temperature protection is possible without being affected by changes in battery voltage due to battery consumption. Overall system power conservation in portable devices is steadily advancing, and this has allowed new features to be added without impairing drive time or the prolongation of drive time. This is being accompanied by increasingly lower operating voltages for the LSIs of the processors and other components that make these features operate. The voltage supplied to these LSIs and ICs is efficiently converted/divided from the battery voltage to the optimum low voltage using a step-down DC/DC converter or other device, and operating the LSI or IC with the stepped-down voltage contributes to power conservation in the overall system. Temperature sensor ICs are no exception to this, and cases readily come to mind such as operating a temperature sensor IC at low voltage to monitor temperature and correct changes of LSI characteristics due to temperature fluctuations. To support these types of needs, we have also developed the XC3101C type, which can operate at an input voltage as low as 1.7V. To enable the analog output voltage of the XC3101C type to maintain a linear temperature coefficient across the entire -40㷄 to 100㷄 operating temperature range even with a lowered operating voltage, we lowered the analog output voltage and optimized the temperature coefficient. (Figure 1) This enables the XC3101 series to operate the IC at the optimum voltage for applications that require temperature monitoring. Analog Output Voltage:䇭VAOUT (mV) X䌃3101㩷Series 2500 2000 XC3101A 1500 1000 XC3101C 500 0 -50 -25 0 25 50 75 100 125 Ambient Temperature: Ta (㷄) Figure 1. Analog output voltage vs. ambient temperature characteristics of the XC3101 A type / C type 5 Comparison of characteristics with existing XC31B product. XC3101A XC3101C (Under development) Operating Voltage Range 2.7V~5.5V 1.7V~5.5V 3.0V~10.0V Analog Output Voltage 2.365V (TYP.)@-40㷄 1.600V (TYP.)@25㷄 0.717V (TYP.)@100㷄 1.330V (TYP.)@-40㷄 0.900V (TYP.)@25㷄 0.404V (TYP.)@100㷄 2.492V (TYP.)@-30㷄 2.000V (TYP.)@25㷄 1.571V (TYP.)@80㷄 -11.77mV/㷄 (TYP.) -40㷄䌾+100㷄 -6.62mV/㷄 (TYP.) -40㷄䌾+100㷄 3.5㱘A (TYP.)@25㷄 3.5㱘A (TYP.)@25㷄 -7.80mV/㷄 (TYP.) -30㷄䌾+80㷄 7.0㱘A (TYP.)@25㷄 ±3.5㷄 ±3.5㷄 ±7.7㷄 USPN-4 (0.9㬍1.2mm) SSOT-24 (2.1㬍2.0mm) USPN-4 (0.9㬍1.2mm) SSOT-24 (2.1㬍2.0mm) USP-6B (1.8㬍2.0mm) SOT-25 (2.8㬍2.9mm) Analog Output Temp. Coefficient Analog Output Temp. Range Supply Current Analog Temperature Accuracy Package XC31BPN20 www.torex.co.jp/english/ July 2011 䃂 Values shown in this sheet can be changed without any prior notice.