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ADM1029 の電気的特性と機能

ADM1029のメーカーはON Semiconductorです、この部品の機能は「Dual PWM Fan Controller and Temperature Monitor」です。


製品の詳細 ( Datasheet PDF )

部品番号 ADM1029
部品説明 Dual PWM Fan Controller and Temperature Monitor
メーカ ON Semiconductor
ロゴ ON Semiconductor ロゴ 




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ADM1029 Datasheet, ADM1029 PDF,ピン配置, 機能
ADM1029
Dual PWM Fan Controller
and Temperature Monitor for
High Availability Systems
The ADM1029 is a versatile fan controller and monitor for use in
personal computers, servers, telecommunications equipment, or any
high-availability system where reliable control and monitoring of
multiple cooling fans is required. Each ADM1029 can control the
speed of one or two fans and can measure the speed of fans that have a
tachometer output. The ADM1029 can also measure the temperature
of one or two external sensing diodes or an internal temperature
sensor, allowing fan speed to be adjusted to keep system temperature
within acceptable limits. The ADM1029 has FAULT inputs for use
with fans that can signal failure conditions, and inputs to detect
whether or not fans are connected.
The ADM1029 communicates with the host processor over an
System Management (SMBus) serial bus. It supports eight different
serial bus addresses, so that up to eight devices can be connected to a
common bus, controlling up to sixteen fans. This makes software
support and hardware design scalable.
The ADM1029 has an interrupt output (INT) that allows it to signal
fault conditions to the host processor. It also has a separate, cascadable
fault output (CFAULT) that allows the ADM1029 to signal a fault
condition to other ADM1029s.
The ADM1029 has a number of useful features including an
automatic fan speed control option implemented in hardware with no
software requirement, automatic use of backup fans in the event of fan
failure, and supports hot-swapping of failed fans.
Features
Software Programmable and Automatic Fan Speed Control
Automatic Fan Speed Control Allows Control
Independent of CPU Intervention after Initial Setup
Control Loop Minimizes Acoustic Noise and Power Consumption
Remote and Local Temperature Monitoring
Dual Fan Speed Measurement
Supports Backup and Redundant Fans
Supports Hot Swapping of Fans
Cascadable Fault Output Allows Fault Signaling between Multiple
ADM1029s
Address Pin Allows Up to Eight ADM1029s in A System
Small 24-lead QSOP Package
This is a Pb-Free Device*
Applications
Network Servers and Personal Computers
Microprocessor-based Office Equipment
High Availability Telecommunications Equipment
* 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. 2
1
http://onsemi.com
QSOP 24
CASE 492B
PIN ASSIGNMENT
DRIVE1 1
FAULT1 2
TACH1 3
PRESENT1 4
SCL 5
SDA 6
GND 7
VCC 8
CFAULT 9
INT 10
GPIO2 11
RESET 12
24 DRIVE2
23 FAULT2
22 TACH2
21 PRESENT2
20 AIN1/GPIO1
19 AIN0/GPIO0
18 TMIN/INSTALL
17 D2+/GPIO6
16 D2/GPIO5
15 ADD
14 D1+/GPIO4
13 D1/GPIO3
ADM1029
Top View
(Not To Scale)
MARKING DIAGRAM
1029ARQZ
#YYWW
1029ARQZ
#
YYWW
= Special Device Code
= Pb-Free Package
= Date Code
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 49 of this data sheet.
Publication Order Number:
ADM1029/D

1 Page





ADM1029 pdf, ピン配列
ADM1029
Table 3. PIN FUNCTION DESCRIPTIONS
Pin No.
Mnemonic
Description
1
DRIVE1
Open Drain Digital Output. Pulsewidth Modulated (PWM) output to control the speed of Fan 1.
Requires 10 kW typical pull-up resistor.
2
FAULT1
Open Drain Digital I/O. When used with a fan having a fault output, a Logic 0 input to this pin signals a
fault on Fan 1. Also used as a fault output.
3
TACH1
Open Drain Digital Input. Digital fan tachometer input for Fan 1. Will accept logic signals up to 5 V even
when VCC is lower than 5 V.
4
PRESENT1
Open Drain Digital Input. A shorting link in the fan connector holds this pin low when Fan 1 is
connected.
5 SCL Open Drain Digital Input. Serial Bus Clock. Requires 2.2 kW pull-up typical.
6
SDA
Digital I/O. Serial Bus bidirectional data. Open-drain output requires 2.2 kW pull-up.
7
GND
System Ground
8 VCC Power (3.0 V to 5.5 V). Typically powered from 3.3 V power rail. Bypass with the parallel combination of
10 mF (electrolytic or tantalum) and 0.1 mF (ceramic) bypass capacitors.
9
CFAULT
Open Drain Digital I/O. Cascade fault input/output used for fault signaling between multiple ADM1029s.
10 INT Digital Output. Interrupt Request (Open Drain). The output is enabled when Bit 1 of the Configuration
Register is set to 0. The default state is enabled.
11
GPIO2
Open Drain Digital I/O. General-purpose logic I/O pin.
12
RESET
Open Drain Digital Input. Active low reset input.
13
D1/GPIO3
Analog Input/Open Drain Digital I/O. Connected to cathode of external temperature-sensing diode, or
may be reconfigured as a general-purpose logic input/output.
14
D1+/GPIO4
Analog Input/Open Drain Digital I/O. Connected to anode of external temperature-sensing diode, or
may be reconfigured as a general-purpose logic input/output.
15
ADD
Eight-level Analog Input. Used to set the three LSBs of the serial bus address.
16
D2/GPIO5
Analog Input/Open Drain Digital I/O. Connected to cathode of external temperature-sensing diode, or
may be reconfigured as a general-purpose logic input/output.
17
D2+/GPIO6
Analog Input/Open Drain Digital I/O. Connected to anode of external temperature-sensing diode, or
may be reconfigured as a general-purpose logic input/output.
18 TMIN/INSTALL Eight-level Analog Input. The voltage on this pin defines whether automatic fan speed control is
enabled, the minimum temperature at which the fan(s) will turn on in automatic speed control mode,
and the number of fans that should be installed.
19
AIN0/GPIO0
Analog Input/Open Drain Digital I/O. May be configured as a 0 V to 2.5 V analog input or as a
general-purpose digital I/O pin.
20
AIN1/GPIO1
Analog Input/Open Drain Digital I/O. May be configured as a 0 V to 2.5 V analog input or as a
general-purpose digital I/O pin.
21
PRESENT2
Open Drain Digital Input. A shorting link in the fan connector holds this pin low when Fan 2 is
connected.
22
TACH2
Open Drain Digital Input. Digital fan tachometer input for Fan 2. Will accept logic signals up to 5 V even
when VCC is lower than 5 V.
23
FAULT2
Open Drain Digital I/O. When used with a fan having a fault output, a Logic 0 input to this pin signals a
fault on Fan 2. Also used as a fault output.
24
DRIVE2
Open Drain Digital Output. Pulsewidth Modulated (PWM) output to control the speed of Fan 2.
Requires 10 kW typical pull-up resistor.
http://onsemi.com
3


3Pages


ADM1029 電子部品, 半導体
ADM1029
TYPICAL PERFORMANCE CHARACTERISTICS
4.5
4.0
3.5
VIN = 250 mV p-p
3.0
2.5
2.0
1.5
1.0
0.5
0
0.5 VIN = 100 mV p-p
1.0
0 1 4 8 12 16 20 50 100 200 300 400 500 600
FREQUENCY (MHz)
Figure 5. Remote Temperature Error vs. Power
Supply Noise Frequency
10
9
8 VIN = 100 mV p-p
7
VIN = 60 mV p-p
VIN = 40 mV p-p
6
5
4
3
2
1
0
1
0 0.4 0.8 10 50 100 150 200 250 300 350 400 450 500 550 600
FREQUENCY (MHz)
Figure 7. Remote Temperature Error vs.
Common-mode Noise Frequency
1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1.0
2.2 3.3 4.7 10.0 22.0
DXP DXN CAPACITANCE (nF)
47.0
Figure 6. Remote Temperature Error vs.
Capacitance between D+ and D
80
70 VCC = 5 V
60
50
40
30
20 VCC = 3.3 V
10
0
01
5 10 25 50 75 100 250 500 750 1000
SCLK FREQUENCY (kHz)
Figure 8. Standby Current vs. Clock Frequency
13
12
11
10 VIN = 40 mV p-p
9
8
7
6
VIN = 30 mV p-p
VIN = 20 mV p-p
5
4
3
2
1
0
1
0 1 4 8 12 16 20 50 100 200 300 400 500
FREQUENCY (MHz)
Figure 9. Remote Temperature Error vs.
Differential-mode Noise Frequency
600
10
9
8 VIN = 250 mV p-p
7
6 VIN = 100 mV p-p
5
4
3
2
1
0
1
0 1 4 8 12 16 20 50 100 200 300 400 500 600
FREQUENCY (MHz)
Figure 10. Local Sensor Temperature Error vs.
Power Supply Noise Frequency
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6

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