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ADT7462 Datasheet, PDF (1/81 Pages) Analog Devices – Flexible Temperature and Voltage Monitor and System Fan Controller | |||
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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 4âwire fans and low frequency PWM for 2âwire and 3âwire
fans. Up to eight TACH inputs can be used to measure the speed of
3âwire and 4âwire 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 32âlead LFCSP_VQ. Many of the
pins are multiâfunctional. 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 3âWire and
4âWire Fans
⢠Automatic Fan Speed Control Loop Includes Dynamic TMIN Control
⢠Monitors Up to 13 V Inputs
⢠Monitors Up to 7 VID Inputs; Includes OnâTheâFly (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 â40°C to +125°C
⢠SpaceâSaving 32âLead Chip Scale Package
Applications
⢠Servers and Personal Computers
⢠Telecommunications Equipment
⢠Test Equipment and Measurement Instruments
http://onsemi.com
LFCSPâ32
CASE 932
MARKING
DIAGRAM
ADT
7462ACPZ
#YYWW
AL
CCCCC
XX = Device Code
#
= PbâFree Package
YYWW = Date Code
AL
= Assembly Lot
CC = Country Code
PIN ASSIGNMENT
VID0/GPIO1/TACH1 1
VID1/GPIO2/TACH2 2
VID2/GPIO3/TACH3 3
VID3/GPIO4/TACH4 4
V CC 5
GND 6
TACH5/+12V1 7
TACH6/+12V2 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 D3â/SCSI_TERM2
19 D3+/+1.25V/+0.9V
18 D2â
17 D2+
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 80 of this data sheet.
© Semiconductor Components Industries, LLC, 2010
1
January, 2010 â Rev. 3
Publication Order Number:
ADT7462/D
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