LM90

Features: `Accurately senses die temperature of remote ICs or diode junctions`Offset register allows sensing a variety of thermal diodes accurately`On-board local temperature sensing`10 bit plus sign remote diode temperature data format, 0.125 resolution`Diode fault detection circuitry`T_CRIT_A o...

product image

LM90 Picture
SeekIC No. : 004396252 Detail

LM90: Features: `Accurately senses die temperature of remote ICs or diode junctions`Offset register allows sensing a variety of thermal diodes accurately`On-board local temperature sensing`10 bit plus sig...

floor Price/Ceiling Price

Part Number:
LM90
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

SeekIC Buyer Protection PLUS - newly updated for 2013!

  • Escrow Protection.
  • Guaranteed refunds.
  • Secure payments.
  • Learn more >>

Month Sales

268 Transactions

Rating

evaluate  (4.8 stars)

Upload time: 2024/3/28

Payment Methods

All payment methods are secure and covered by SeekIC Buyer Protection PLUS.

Notice: When you place an order, your payment is made to SeekIC and not to your seller. SeekIC only pays the seller after confirming you have received your order. We will also never share your payment details with your seller.
Product Details

Description



Features:

`Accurately senses die temperature of remote ICs or diode junctions
`Offset register allows sensing a variety of thermal diodes accurately
`On-board local temperature sensing
`10 bit plus sign remote diode temperature data format, 0.125 resolution
`Diode fault detection circuitry
`T_CRIT_A output useful for system shutdown (open diode does not activate T_CRIT_A )
`ALERT output supports SMBus 2.0 protocol
`SMBus 2.0 compatible interface, supports TIMEOUT
`8-pin MSOP packages





Application

·System Thermal Management (e.g. Laptop, Desktop, Workstations, Server)
·Electronic Test Equipment
·Office Electronics





Pinout

  Connection Diagram




Specifications

Supply Voltage -0.3 V to 6.0 V
Voltage at SMBData, SMBCLK,
ALERT , T_CRIT_A -0.5V to 6.0V
Voltage at Other Pins -0.3 V to
(VDD + 0.3 V)
D- Input Current ±1 mA
Input Current at All Other Pins (Note 2) ±5 mA
Package Input Current (Note 2) 30 mA
SMBData,ALERT , T_CRIT_A Output
Sink Current 10 mA
Storage Temperature -65 to
+150
Soldering Information, Lead Temperature
SOIC-8 or MSOP-8 Packages (Note 3)
Vapor Phase (60 seconds) 215
Infrared (15 seconds) 220
ESD Susceptibility (Note 4)
Human Body Model 2000 V
Machine Model 200 V


Remote Diode Thermal Sensors 1
Temperature Accuracy (+/-) 3 deg C
Supply Min 3 Volt
Quiescent Current 1.7 mA
Temperature Min 0 deg C
Temperature Max 125 deg C
Interface Type 2-Wire Serial
Programmable Setpoints Yes
Resolution 11 bits
Resolution degC/LSB 0.125
Supply Max 3.6 Volt
Shut down Yes
Interrupt Outputs 2
Fault Queue Yes
View Using Catalog





Description

The LM90 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) serial interface. The LM90 accurately measures its own temperature as well as the temperature of an external device, such as processor thermal diode or diode connected transistor such as the 2N3904. The temperature of any ASIC can be accurately determined using the LM90 as long as a dedicated diode (semiconductor junction) is available on the target die. The LM90 remote sensor accuracy of ±3 is factory trimmed for the 1.008 typical non-ideality factor of the mobile PentiumTM III thermal diode. The LM90 has an Offset register to allow measuring other diodes without requiring continuous software management. Contact hardware.monitor.team@nsc.com to obtain the latest data for new processors.
Activation of the ALERT output occurs when any temperature goes outside a preprogrammed window set by the HIGH and LOW temperature limit registers or exceeds the T_CRIT temperature limit. Activation of the T_CRIT_A occurs when any temperature exceeds the T_CRIT programmed limit. The LM90 is pin and register compatible with the LM86, Analog Devices ADM1032 and Maxim MAX6657/8.





Customers Who Bought This Item Also Bought

Margin,quality,low-cost products with low minimum orders. Secure your online payments with SeekIC Buyer Protection.
Discrete Semiconductor Products
LED Products
Power Supplies - Board Mount
Audio Products
Boxes, Enclosures, Racks
Fans, Thermal Management
View more