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부품번호 | ADM1033 기능 |
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기능 | Thermal Monitor and Fan Speed (RPM) Controller | ||
제조업체 | ON Semiconductor | ||
로고 | |||
전체 30 페이지수
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
1C 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
* For additional information on our Pb-Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
Semiconductor Components Industries, LLC, 2012
April, 2012 − Rev. 3
1
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QSOP−16
CASE 492
PIN ASSIGNMENT
DRIVE1 1
TACH1 2
ALERT Comp 3
NC 4
GND 5
VCC 6
THERM 7
FAN_FAULT/REF 8
ADM1033
16 SCL
15 SDA
14 ALERT
13 LOCATION
12 NC
11 NC
10 D1+
9 D1−
(Top View)
MARKING DIAGRAM
1033A
RQZ
#YYWW
1033ARQZ = Specific Device Code
# = Pb-Free Package
YY = Date Code
WW = Work Week
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 34 of this data sheet.
Publication Order Number:
ADM1033/D
ADM1033
Table 4. ELECTRICAL CHARACTERISTICS (TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted.) (Note 1)
Parameter
Test Conditions/Comments
Min Typ Max Unit
Power Supply
Supply Voltage, VCC (Note 2)
Supply Current, ICC
Undervoltage Lockout Threshold
Interface inactive, ADC Active
Standby Mode
3.0 3.30 3.6
V
− − 3.0 mA
− − 900 mA
− 2.5 −
V
Power-On Reset Threshold
1.0 − 2.4 V
Temperature-to-Digital Converter
Internal Sensor Accuracy
Resolution
External Diode Sensor Accuracy
Resolution
Remote Sensor Source Current
20C TA 60C
−40C TA +100C
−40C TD +100C; TA = +40C
−40C TD +100C; +20C TA +60C
−40C TD +100C; −40C TA +100C
High Level
Mid Level
Low Level
−
−4.0
−
−
−
−3.0
−
−
−
−
1.0
−
0.03125
0.5
1.0
−
0.03125
85
34
5.0
2.0
+2.0
−
1.0
1.25
+2.0
−
−
−
−
C
C
C
C
mA
Series Resistance Cancellation
Power Supply Sensitivity
Conversion Time (Local Temperature)
Averaging Enabled
− − 1000 W
− 1.0 − %/V
− 11 − ms
Conversion Time (Remote Temperature) Averaging Enabled
− 32 − ms
Total Conversion Time
Averaging Enabled
− 43 − ms
Open-Drain Digital Outputs (ALERT, THERM, FAN_FAULT, DRIVE1, DRIVE2) (Note 3)
Output Low Voltage, VOL
IOUT = −6.0 mA; VCC = +3.0 V
High Level Output Leakage Current, IOH VOUT = VCC; VCC = 3.0 V
Digital Input Leakage Current (TACH1, TACH2)
− − 0.4 V
− 0.1 1.0 mA
Input High Current, IIH
−VIN = VCC
Input Low Current, IIL
VIN = 0
Input Capacitance, CIN
Digital Input Logic Levels (TACH1, TACH2)
−1.0
−
− mA
− − 1.0 mA
− 7.0 − pF
Input High Voltage, VIH
Input Low Voltage, VIL
Hysteresis
2.0 − 5.5 V
−0.3 − +0.8 V
− 500 − mV p−p
Open-Drain Serial Data Bus Output (SDA)
Output Low Voltage, VOL
High Level Output Leakage Current, IOH
Serial Bus Digital Inputs (SCL, SDA)
IOUT = −6.0 mA; VCC
VOUT = VCC
− − 0.4 V
− 0.1 1.0 mA
Input High Voltage, VIH
Input Low Voltage, VIL
Hysteresis
2.1 − − V
− − 0.8 V
− 500 − mV
Analog Inputs (Location, REF)
Input Resistance
Tachometer Accuracy
80 125 160 kW
Fan Speed Measurement Accuracy
− − 4.0 %
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4페이지 ADM1033
TYPICAL PERFORMANCE CHARACTERISTICS (Cont’d)
2
1
HIGH 4 SIGMA
0
−1
−2
−3
−4
MEAN
S1 V1
−5
S2 V2
S3 V3
−6
S4 V4
S5 V5
−7
LOW 4 SIGMA
−60 −40 −20 0 20 40 60 80 100 120 140
TEMPERATURE (C)
Figure 9. Remote 1 Temperature Error vs.
Actual Temperature
430
420
410 DEV 31
400
390 DEV 33
380
DEV 32
370
360
1
10 100 1000
FSCL (kHz)
Figure 11. Standby Supply Current vs.
SCLK Frequency
2
1 HIGH 4 SIGMA
0
−1
−2
−3
−4
−5
−6
−7
−50
S1
S2
S3
S4
S5
0
MEAN
V1
V2
V3
V4
V5 LOW 4 SIGMA
50 100 150
TEMPERATURE (C)
Figure 10. Local Temperature Error vs.
Actual Temperature
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0123 45
SUPPLY VOLTAGE (V)
Figure 12. Standby Supply Current vs.
Supply Voltage
6
1200
1000
800
600 DEV 31
400
DEV 33
200
DEV 32
0
0.01
0.1
1
10 100
CONVERSION RATE (Hz)
Figure 13. Supply Current vs. Conversion Rate
1.55
1.50
1.45
1.40
1.35
1.30
1.25
−60 −40 −20 0 20 40 60 80 100
TEMPERATURE (C)
Figure 14. Supply Current vs. ADM1033 Temperature
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