|
|
PDF ADT7462 Data sheet ( Hoja de datos )
| Número de pieza | ADT7462 | |
| Descripción | Voltage Monitor and System Fan Controller | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ADT7462 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
ADT7462
Flexible Temperature,
Voltage Monitor, and
System Fan Controller
The ADT7462 is a flexible systems monitor IC, suitable for use in a
wide variety of applications. It can monitor temperature in up to three
remote locations, as well as its ambient temperature.
There are up to four PWM outputs. These can be used to control the
speed of a cooling fan by varying the % duty cycle of the PWM drive
signal applied to the fan. The ADT7462 supports high frequency
PWM for 4-wire fans and low frequency PWM for 2-wire and 3-wire
fans. Up to eight TACH inputs can be used to measure the speed of
3-wire and 4-wire fans. There are up to 13 voltage monitoring inputs,
ranging from 12 V to 0.9 V.
The ADT7462 is fully compatible with SMBus 1.1 and SMBus 1.0.
The ADT7462 also includes a THERM I/O and a RESET I/O.
The ADT7462 is available in a 32-lead LFCSP_VQ. Many of the
pins are multi-functional. Five easy configuration options can be set
up using the easy configuration register. Users choose the
configuration closest to their requirements; individual pins can be
reconfigured after the easy configuration option has been chosen.
Features
• One Local and Up to Three Remote Temperature Channels Series
Resistance Cancellation On Remote Channels
• Thermal Protection Using THERM Pins
• Up to Four PWM Fan Drive Outputs Supports Both High and
Low Frequency PWM Drives
• Up to Eight TACH Inputs Measures the Speed of 3-wire and
4-wire Fans
• Automatic Fan Speed Control Loop Includes Dynamic TMIN Control
• Monitors Up to 13 V Inputs
• Monitors Up to 7 VID Inputs; Includes On-The-Fly (OTF)
VID Support
• Bidirectional Reset
• Chassis Intrusion Detect
• SMBus 1.1 and SMBus 1.0 Compatible
• 3.3 V and 5.0 V Operation
• Extended Operating Range from −40°C to +125°C
• Space-saving 32-lead Chip Scale Package
• This is a Pb-Free Device*
Applications
• Servers and Personal Computers
• Telecommunications Equipment
• Test Equipment and Measurement Instruments
*For additional information on our Pb-Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
www.onsemi.com
LFCSP−32
CASE 932
PIN ASSIGNMENT
VID0/GPIO1/TACH1
VID1/GPIO2/TACH2
VID2/GPIO3/TACH3
VID3/GPIO4/TACH4
V CC
GND
TACH5/+12V1
TACH6/+12V2
1
2
3
4
5
6
7
8
PIN 1
INDICATOR
ADT7462
V CCP2/
24 +1.5V/+1.8V/+2.5V
23
V CCP1/
+1.5V/+1.8V/+2.5V
22 TACH8/+12V3
21 TACH7/+5V
20 D3–/SCSI_TERM2
19 D3+/+1.25V/+0.9V
18 D2–
17 D2+
MARKING DIAGRAM
ADT
7462ACPZ
#YYWW
AL
CCCCC
ADT7462ACPZ = Specific Device Code
# = Pb-Free Package
YYWW
= Date Code
AL = Assembly Lot
CC = Country Code
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 81 of this data sheet.
© Semiconductor Components Industries, LLC, 2016
January, 2016 − Rev. 5
1
Publication Order Number:
ADT7462/D
1 page  
ADT7462
Table 4. ELECTRICAL CHARACTERISTICS (TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted.) (Note 1)
Parameter
Test Conditions/Comments
Min Typ Max
Power Supply
Supply Voltage
3.0 3.3 5.5
Supply Current, ICC
Temperature-to-Digital Converter
Internal Sensor, TA, Accuracy
Resolution
Remote Sensor, TD, Accuracy
(−40°C ≤ TD ≤ +125°C)
Resolution
Remote Sensor Source Current
(Note 3)
ADC Active, Interface Inactive (Note 2)
TA Conditions
0°C ≤ TA ≤ 85°C
−40°C ≤ TA ≤ +100°C
0°C ≤ TA ≤ 85°C
−40°C ≤ TA ≤ +100°C
VCC Conditions
3 V ≤ VCC ≤ 3.6 V
3 V ≤ VCC ≤ 3.6 V
4.5 V ≤ VCC ≤ 5.5 V
4.5 V ≤ VCC ≤ 5.5 V
0°C ≤ TA ≤ 85°C
−40°C ≤ TA ≤ +100°C
0°C ≤ TA ≤ 85°C
−40°C ≤ TA ≤ +100°C
3 V ≤ VCC ≤ 3.6 V
3 V ≤ VCC ≤ 3.6 V
4.5 V ≤ VCC ≤ 5.5 V
4.5 V ≤ VCC ≤ 5.5 V
High Level
Mid Level
Low Level
−
−
−
−
−
−
−
−
−
−
−
−
−
−
1.5 4.0
±0.5 ±2.25
− ±3.25
− ±3.0
− ±4.0
− 0.25
±0.5 ±2.25
− ±3.25
− ±2.75
− ±3.5
− 0.25
85 −
34 −
5.0 −
Series Resistance Cancellation
(Note 3)
The ADT7462 Cancels 2 kW in Series with
the Remote Thermal Diode
− 2.0 −
ANALOG−TO−DIGITAL CONVERTER
Total Unadjusted Error, TUE
(Note 4 and 5)
− − ±3.5
Differential Non-linearity, DNL
Conversion Time (Voltage Input) (Note 3)
Conversion Time (Local Temperature)
(Note 3)
8 Bits
− − ±1.0
− 8.53 9.86
− 9.01 10.38
Conversion Time
(Remote Temperature) (Note 3)
− 38.36 42.09
INPUT RESISTANCE
Pin 7, Pin 8, Pin 13, Pin 21, Pin 22,
Pin 25, Pin 28, Pin 29
Attenuators Enabled
− 140 −
Pin 15, Pin 19
Pin 23, Pin 24
Pin 26, VBATT and +1.2V2
(When Measured)
Attenuators Enabled
Attenuators Enabled
Attenuators Cannot Be Disabled
− 225 −
− 66 −
100 120 140
VBATT Current Drain
(When Measured)
CR2032 Battery Life > 10 Years
− 80 100
VBATT Current Drain
(When Not Measured)
CR2032 Battery Life > 10 Years
− 16 −
FAN RPM TO DIGITAL CONVERTER
Accuracy
Internal Clock Frequency
OPEN-DRAIN OUTPUTS (PWM, GPIO)
− − ±8.0
82.8 90 97.2
High Level Output Leakage Current, IOH
VOUT = VCC
Output Low Voltage, VOL
IOUT = −3 mA, VCC = +3.3 V
DIGITAL OUTPUT (RESET,ALERT, THERM)
− 0.1 ±1.0
− − 0.4
Output Low Voltage, VOL
RESET Pulse Width (Note 3)
RESET Threshold
RESET Hysteresis (Note 3)
IOUT = −3 mA, VCC = +3.3 V
Falling Voltage
− − 0.4
140 180 −
3.0 3.05 3.1
− 70 −
Unit
V
mA
°C
°C
°C
°C
mA
kW
%
LSB
ms
ms
ms
kW
kW
kW
kW
nA
nA
%
kHz
mA
V
V
ms
V
mV
www.onsemi.com
5
5 Page 
ADT7462
Configuration Option 2
Configuration Option 2 is used for thermal monitoring
and fan control for Processor 1 and Processor 2 in a dual
processor system. It can also monitor one set of VIDs, if
required. Features of Configuration Option 2 include the
following:
• One Local and Three Remote Thermal Channels
• Up to Four PWM Drives and Up to Eight TACH Inputs
(VID Pins and TACHs/PWMs are Muxed Together)
• Two THERM I/Os
• Two VRD Inputs
• RESET I/O
• Two VCCP Voltage Monitoring Channels
Figure 20 shows the pin configuration when Configuration
Option 2 is chosen.
TACH1
TACH2
TACH3
TACH4
VCC
GND
TACH5
TACH6
1
2
3
4
5
6
7
8
PIN 1
INDICATOR
ADT7462
TOP VIEW
(Not to Scale)
24 VCCP2
23 VCCP1
22 TACH8
21 TACH7
20 D3–
19 D3+
18 D2–
17 D2+
Figure 20. Configuration Option 2
Table 7. CONFIGURATION OPTION 2
Pin Function Configuration Register
Bit Value
1† TACH1 Pin Configuration Reg 1 Bit 4 = 1
2† TACH2 Pin Configuration Reg 1 Bit 3 = 1
3† TACH3 Pin Configuration Reg 1 Bit 2 = 1
4† TACH4 Pin Configuration Reg 1 Bit 1 = 1
7 TACH5 Pin Configuration Reg 1 Bit 0 = 1
8 TACH6 Pin Configuration Reg 2 Bit 7 = 1
13 PWM4 Pin Configuration Reg 2 Bit 6 = 1
15 D1+ Pin Configuration Reg 1 Bit 6 = 1
16 D1− Pin Configuration Reg 1 Bit 6 = 1
19 D3+ Pin Configuration Reg 1 Bit 5 = 1
20 D3− Pin Configuration Reg 1 Bit 5 = 1
21 TACH7 Pin Configuration Reg 2 Bit 3 = 1
22 TACH8 Pin Configuration Reg 2 Bit 2 = 1
23 VCCP1 Pin Configuration Reg 2 Bits [1:0] = 00
24 VCCP2 Pin Configuration Reg 3 Bits [7:6] = 00
25 VR_HOT1 Pin Configuration Reg 3 Bits [5:4] = 1×
26 VR_HOT2 Pin Configuration Reg 3 Bits [3:2] = 1×
27 FAN2MAX
28† THERM1
Pin Configuration Reg 3
Pin Configuration Reg 4
Bit 1 = 0
Bits [7:6] = 1×
29 THERM2 Pin Configuration Reg 4 Bits [5:4] = 1×
31† PWM1 Pin Configuration Reg 4 Bit 3 = 1
32† PWM2 Pin Configuration Reg 4 Bit 2 = 1
†If VIDs are selected, these pins are configured as VIDs. To enable
VIDs, set Bit 7 of Pin Configuration Register 1 (0x10) = 1.
www.onsemi.com
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ADT7462.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ADT7460 | dB COOL Remote Thermal Controller and Fan Controller |  Analog Devices |
| ADT7461 | Temperature Monitor | Analog Devices |
| ADT7461 | Temperature Monitor | ON Semiconductor |
| ADT7461A | Temperature Monitor | ON Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |