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G760A, G760A(G281), G767

Table of contents:
Info of G760A
Info of G760A(G281)
Info of G767

G760A, G760A(G281), G767 Selling Leads, Datasheet

MFG:GMT Package Cooled:SOP8 D/C:03+

G760A, G760A(G281), G767 Datasheet download

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Part Number: G760A

MFG: GMT

Package Cooled: SOP8

D/C: 03+

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G760A General Description

G760 is a single chip solution for fan speed control, packaged in a space saving SO-8 package. It con-nects directly to the fan and performs closed-loop control of the fan speed. The only external compo-nent required is a 10µF capacitor. t determined the current fan speed based on the fan rotation pulses and an externally supplied clock. It uses pulse width modulation (PWM) method and an on-chip MOSFET to control the fan speed to ±2% of the programmed speed. he desired fan speed is pro-grammed via the SMBus. The actual fan speed and fan status can be read via the SMBus. Short-circuit protection is implemented to prevent damages to the fan and this IC itself. An On/Off control pin is also provided.

G760A Maximum Ratings

PARAMETER	SYMBOL	MAXIMUM	UNITS
Supply Voltage	V_CC	-0.3 to +7	V
Operating Temperature Range	T_A	0 to +70	°C
Junction Temperature Range	T_J	0 to +125	°C
Storage Temperature Range	T_STG	-65 to +150	°C
Lead Temperature (solding) 10 seconds	T_L	300	°C

G760A Features

-Constant Fan Speed Control
-PWM control for stable operation
-Build-in MOSFET switch
-SMBus interface
-Internal short-circuit protection
-On/Off control provided

G760A Typical Application

-Notebook PC
-Industrial PC
-LAN Switch
-Servers
-Telecom equipment
-Industrial Control

G760A Connection Diagram

G767 General Description

The G767 is a precise digital thermometer that reports the temperature of both a remote sensor and its own package. The remote sensor is a diode-connected transistor typically a low-cost, easily mounted 2N3904 NPN type-that replace conventional thermistors or thermocouples. Remote accuracy is ±3°C for multiple transistor manufacturers, with no calibration needed. The remote channel can also measure the die temperature of other ICs, such as microprocessors, that contain an on-chip, diode-connected transistor.

The 2-wire serial interface accepts standard System Management Bus (SMBusTM) Write Byte, Read Byte, Send Byte, and Receive Byte commands to program the alarm thresholds and to read temperature data.The data format is 7 bits plus sign, with each bit corresponding to 1°C, in two's-complement format. Measurements can be done automatically and autonomously, with the conversion rate programmed by the user or programmed to operate in a single-shot mode. The adjustable rate allows the user to control the supply-current drain.

The G767 is available in a small, 16-pin SSOP surface- mount package.

G767 Maximum Ratings

Vcc to GND..........................-0.3V to +6V
DXP, ADD to GND..............-0.3V to (Vcc + 0.3V)
DXN to GND........................-0.3V to +0.8V
SMBCLK, SMBDATA, ALERT , STBY to GND....
..............................-0.3V to +6V
SMBDATA, ALERT Current..............-1mA to +50mA
DXN Current..........................±1mA
ESD Protection (SMBCLK, SMBDATA, ALERT ,
human body model)......................4000V
ESD Protection (other pins, human body model).2000V
Continuous Power Dissipation (TA = +70)
SSOP(derate 8.30mW/ above +70)..... ...667mW
Operating Temperature Range...... -55 to +125
Junction Temperature............. +150°C
Storage temperature Range.... .-65 to +165
Reflow Temperature (soldering, 10sec)........260

Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

G767 Features

`Two Channels: Measures Both Remote and Local Temperatures
`No Calibration Required
`SMBus 2-Wire Serial Interface
`Programmable Under/Overtemperature Alarms
`Supports SMBus Alert Response
`Accuracy:
    ±2 (+60 to + 100, local)
    ±3 (-40 to +125, local)
    ±3 (+60 to +100, remote)
`3A (typ) Standby Supply Current
`70A (max) Supply Current in Auto- Convert Mode
`+3V to +5.5V Supply Range
`Small, 16-Pin SSOP Package

G767 Typical Application

Desktop and Notebook
Central Office
Computers
Telecom Equipment
Smart Battery Packs
Test and Measurement
LAN Servers
Multi-Chip Modules
Industrial Controls

G767 Connection Diagram

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