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ADM1033ARQZ-REEL

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P35
Semiconductor Components Industries, LLC, 2012
April, 2012 − Rev. 3
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
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.
http://onsemi.com
PIN ASSIGNMENT
(Top View)
See detailed ordering and shipping information in the package
dimensions section on page 34 of this data sheet.
ORDERING INFORMATION
1033ARQZ = Specific Device Code
# = Pb-Free Package
YY = Date Code
WW = Work Week
MARKING DIAGRAM
QSOP−16
CASE 492
ALERT
SCL
SDA
LOCATION
NC
D1+
D1−
NC
DRIVE1
TACH1
ALERT
Comp
NC
GND
V
CC
THERM
FAN_FAULT/REF
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
ADM1033
1033A
RQZ
#YYWW
ADM1033
http://onsemi.com
2
Figure 1. Functional Block Diagram
RPM FAN
SPEED
CONTROLLER
SIGNAL
CONDITIONING
FAN
SPEED
COUNTER
ENHANCE
ACOUSTICS
TEMPERATURE
TO FAN SPEED
LOOK-UP TABLE
MANUAL FAN
SPEED CONTROL
REGISTERS
ADC
BAND GAP
REFERENCE
ANALOG
MULTIPLEXER
SRC
BLOCK
BAND GAP
TEMPERATURE
SENSOR
SMBUS
ADDRESS
SERIAL BUS
INTERFACE
ADDRESS
POINTER
REGISTER
STATUS
REGISTER
LIMIT
COMPARATOR
VALUE AND
LIMIT
REGISTERS
FAULT
QUEUE
HYSTERESIS
REGISTERS
OFFSET
REGISTERS
CONVERSION
RATE
REGISTER
CONFIGURATION
REGISTERS
MASK
REGISTERS
FAULT
QUEUE
THERM
PERCENT
TIMER
ALERT
THERM
ADM1033
GND
5
NC = NO CONNECT
12
11
10
9
8
13
2
1
DRIVE
TACH
LOCATION
REF
D−
D+
NC
NC
V
CC
6
16
15
8
3
14
7
SCL
SDA
FAN_FAULT
ALERT Comp
SMBusALERT
THERM
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter Rating Unit
Positive Supply Voltage (V
CC
) −0.3, +6.5 V
Voltage on Any Input or Output Pin except FAN_FAULT and LOCATION −0.3 to V
DD
+ 6.5 V
Voltage on FAN_FAULT (Note 1) V
CC
Voltage on LOCATION V
CC
+ 0.3 V
Input Current at Any Pin 20 mA
Maximum Junction Temperature (T
J
MAX
) 150 C
Storage Temperature Range −65 to +150 C
Lead Temperature, Soldering (10 s) 300 C
IR Reflow Peak Temperature 220 C
ESD Rating − All Pins 1500 V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. During powerup the voltage on FAN_FAULT
should not be higher than V
CC
.
NOTE: This device is ESD sensitive. Use standard ESD precautions when handling.
ADM1033
http://onsemi.com
3
Table 2. THERMAL CHARACTERISTICS
Package Type
q
JA
q
JC
Unit
16-lead QSOP Package 150 39 C/W
Table 3. PIN ASSIGNMENT
Pin No. Mnemonic Description
1 DRIVE1 DRIVE1 Pin Drives Fan 1. Open-drain output. Requires a pullup resistor.
2 TACH1 Fan 1 Fan Speed Measurement Input. Connects to the fan’s TACH output to measure the fan speed.
3 ALERT Comp Open-Drain Active Low Output. Assets low whenever a measurement goes outside its programmed
limits if not masked. Automatically goes high again when the measured parameter falls back within its
limits.
4 NC No Connect.
5 GND Ground for Analog and Digital Circuitry.
6 VCC Power. Can be powered by 3.3 V standby power if monitoring in low power states is required.
7 THERM Can be configured as an overtemperature interrupt output, or as an input (to monitor PROCHOT output
of an INTEL CPU). A timer measures assertion times on the THERM pin (either input or output).
8 FAN_FAULT/R
EF
FAN_FAULT: Open-Drain Output. Asserted low when one or both fans stall. Requires a pullup
resistor to V
CC
. REF: Analog Input Reference for the THERM Input.
9 D1− Cathode Connection for the First Thermal Diode or Diode-Connected Transistor.
10 D1+ Anode Connection for the First Thermal Diode or Diode-Connected Transistor.
11 NC No Connect.
12 NC No Connect.
13 LOCATION 8-level Analog Input. Used to determine the correct SMBus version and the SMBus address (in fixed
and discoverable mode) and to set the LLL bits in the UDID (in ARP-capable mode).
14 ALERT Open-Drain Output. SMBusALERT pin. Alerts the system in the case of out-of-limit events, such as
over temperature. Can be configured as sticky SMBus mode or comparator mode.
15 SDA Serial Bus Bidirectional Data. Connects to the SMBus master’s data line. Requires pullup resistor if
not provided elsewhere in the system.
16 SCL Serial SMBus Clock Input. Connects to the SMBus master’s clock line. Requires pullup resistor if not
already provided in the system.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P35

ADM1033ARQZ-REEL

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Buy ADM1033ARQZ-REEL
Manufacturer:
ON Semiconductor
Description:
Board Mount Temperature Sensors +/- 1 C Digital 2-Wire
Lifecycle:
New from this manufacturer.
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