Datenblatt-Suchmaschine für elektronische Bauteile |
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ADM1033ARQZ Datenblatt(PDF) 1 Page - ON Semiconductor |
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ADM1033ARQZ Datenblatt(HTML) 1 Page - ON Semiconductor |
1 / 35 page © Semiconductor Components Industries, LLC, 2010 July, 2010 − Rev. 2 1 Publication Order Number: ADM1033/D ADM1033 Thermal Monitor and Fan Speed (RPM) Controller The ADM1033 is a one channel remote− and local−temperature sensor and fan controller. The remote channel monitors the temperature of the remote thermal diode, which may be discrete 2N3904/6s or may be located on a microprocessor die. The device also monitors its own ambient temperature. The ADM1033 can monitor and control the speed of cooling fan. The user can program a target fan speed, or else use the look−up table to input a temperature−to−fan speed profile. The look−up table can be configured to run the fans at discrete speeds (discrete mode) or to ramp the fan speed with temperature (linear mode). The ADM1033 communicates over a 2−wire SMBus 2.0 interface. An 8−level LOCATION input allows the user to choose between SMBus 1.1 and SMBus 2.0. An ALERT output indicates error conditions. The THERM I/O signals overtemperature as an output and times THERM assertions as an input. Pin 8 can be configured as a reference for the THERM (PROCHOT) input. FEATURES • 1 Local and Remote Temperature Channels • ±1°C Accuracy on Local and Remote Channels • Automatic Remote Temperature Channel, Up to 1 kW • Fast (Up to 64 Measurements per Second) • SMBus 2.0, 1.1, and 1.0 Compliant • SMBus Address Input/LOCATION Input to UDID • Programmable Over/Undertemperature Limits • Programmable Fault Queue • SMBusALERT Output • Fail−Safe Overtemperature Comparator Output • Fan Speed (RPM) Controller • Look−up Table for Temperature−to−Fan Speed Control • Linear and Discrete Options for Look−up Table • FAN_FAULT Output • THERM Input, Used to Time PROCHOT Assertions • REF Input, Used as Reference for THERM (PROCHOT) • 3.0 V to 5.5 V Supply • Small 16−Lead QSOP Package • This is a Pb−Free Device APPLICATIONS • Desktop and Notebook PCs • Embedded Systems • Telecommunications Equipment • LCD Projectors http://onsemi.com PIN ASSIGNMENT (Top View) 1 2 3 4 5 6 7 8 14 13 12 11 10 9 TACH1 Comp NC THERM VCC GND DRIVE1 SDA LOCATION NC NC SCL ADM1033 FAN_FAULT/REF ALERT D1− D1+ 16 15 See detailed ordering and shipping information in the package dimensions section on page 34 of this data sheet. ORDERING INFORMATION xxx = Specific Device Code # = Pb−Free Package YY = Date Code WW = Work Week MARKING DIAGRAM 1 1033A RQZ #YYWW QSOP−16 CASE 492 ALERT |
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