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LM88CIMM-A Datasheet

  • LM88CIMM-A

  • Factory Programmable Dual Remote-Diode Thermostat

  • 199.46KB

  • 9頁

  • NSC

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LM88 Factory Programmable Dual Remote-Diode Thermostat
August 2001
LM88
Factory Programmable Dual Remote-Diode Thermostat
General Description
The LM88 is a dual remote-diode temperature sensor with 3
digital comparators. The LM88 has 3 open-drain outputs
(O_SP0, O_SP1 and O_CRIT) that can be used as inter-
rupts or to signal system shutdown. The digital comparators
can be factory programmed to make a greater than or less
than comparison. When programmed for a greater than
comparison outputs:
O_SP0 and O_SP1 activate when the temperatures mea-
sured by D0 or D1 exceed the associated setpoints of
T_SP0 or T_SP1.
O_CRIT activates when the temperature measured by
either D0 or D1 exceeds setpoint T_CRIT.
T_CRIT can be set at 1藲C intervals from 鈭?0藲C to +125藲C.
T_SP0 and T_SP1 can be set at 4藲C intervals in the range of
T_CRIT +127藲C/鈭?28藲C. Hysteresis for all comparators is
set to 1藲C. O_CRIT, in conjunction with T_CRIT, could be
used to prevent catastrophic damage to key subsystems
such as notebook Card Bus cards while O_SP0 and O_SP1,
in conjunction with T_SP0 and T_SP1, can warn of an
impending failure.
The LM88 is available in an 8-lead mini-small-outline pack-
age.
Features
n
2 external remote diode input channels
n
3 digital comparator outputs, 1 per remote diode and
one T_CRIT common to both
n
Factory programmable greater than or less than
comparisons
n
1藲C comparator hysteresis
n
2 setpoints, T_SP0 and T_SP1, factory programmable in
4藲C intervals
n
1 setpoint, T_CRIT, factory programmable in 1藲C
intervals
n
Active Low open-drain digital outputs
n
8-pin mini-SO plastic package
Key Specifications
j
Power Supply Voltage
j
Power Supply Current
j
LM88 Temperature Range
j
Diode Setpoint Temperature
2.8V鈥?.8V
1.5 mA (max)
鈭?0藲C to +85藲C
0藲C to +125藲C
Range
j
Temperature Trip Point Accuracy:
Diode Junction
Temperature
(T
DJ
)
LM88CIM
Accuracy
LM88CIM
Temperature
Range
鈭?0藲C to +85藲C
鈭?0藲C to +85藲C
Applications
n
n
n
n
n
n
n
n
Microprocessor Thermal Management
Appliances
Portable Battery Powered Systems
Fan Control
Industrial Process Control
HVAC Systems
Remote Temperature Sensing
Electronic System Protection
+45藲C to +85藲C
+60藲C to +100藲C
鹵
3藲C (max)
鹵
3藲C (max)
Note: These are sample ranges. Contact factory for other
ranges.
Simplified Block Diagram and Connection Diagram
MSOP-8/MUA08A Package
10132601
10132602
Top View
For simplicity, the effects of the hysteresis are not shown in the
temperature response diagram.
漏 2001 National Semiconductor Corporation
DS101326
www.national.com

LM88CIMM-A 產(chǎn)品屬性

  • 1,000

  • 集成電路 (IC)

  • PMIC - 熱管理

  • -

  • 溫度計，恒溫計

  • 外部

  • 外部傳感器

  • ±3°C（最小值）

  • ADC（三角積分型），比較器，寄存器庫

  • 開路漏極

  • 無

  • 是

  • 2.8 V ~ 3.8 V

  • -40°C ~ 85°C

  • 表面貼裝

  • 8-TSSOP，8-MSOP（0.118"，3.00mm 寬）

  • 8-MSOP

  • 帶卷 (TR)

  • LM88CIMM-ATR

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