|
|
PDF LM56 Data sheet ( Hoja de datos )
| Número de pieza | LM56 | |
| Descripción | Dual Output Low Power Thermostat | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LM56 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
|
No Preview Available !
April 2000
LM56
Dual Output Low Power Thermostat
General Description
The LM56 is a precision low power thermostat. Two stable
temperature trip points (VT1 and VT2) are generated by divid-
ing down the LM56 1.250V bandgap voltage reference using
3 external resistors. The LM56 has two digital outputs. OUT1
goes LOW when the temperature exceeds T1 and goes
HIGH when the the temperature goes below (T1–THYST).
Similarly, OUT2 goes LOW when the temperature exceeds
T2 and goes HIGH when the temperature goes below
(T2–THYST). THYST is an internally set 5˚C typical hysteresis.
The LM56 is available in an 8-lead Mini-SO8 surface mount
package and an 8-lead small outline package.
Applications
n Microprocessor Thermal Management
n Appliances
n Portable Battery Powered 3.0V or 5V Systems
n Fan Control
n Industrial Process Control
n HVAC Systems
n Remote Temperature Sensing
n Electronic System Protection
Features
n Digital outputs support TTL logic levels
n Internal temperature sensor
n 2 internal comparators with hysteresis
n Internal voltage reference
n Currently available in 8-pin SO plastic package
n Future availability in the 8-pin Mini-SO8 package
Key Specifications
n Power Supply Voltage
2.7V–10V
n Power Supply Current
230 µA (max)
n VREF
1.250V ±1% (max)
n Hysteresis Temperature
5˚C
n Internal Temperature Sensor
Output Voltage
(+6.20 mV/˚C x T) +395 mV
n Temperature Trip Point Accuracy:
+25˚C
+25˚C to +85˚C
−40˚C to +125˚C
LM56BIM
±2˚C (max)
±2˚C (max)
±3˚C (max)
LM56CIM
±3˚C (max)
±3˚C (max)
±4˚C (max)
Simplified Block Diagram and Connection Diagram
DS012893-1
DS012893-2
Order
Number
NS
Package
Number
Transport
Media
Package
Marking
LM56BIM LM56BIMX LM56CIM LM56CIMX LM56BIMM LM56BIMMX LM56CIMM LM56CIMMX
M08A
M08A
M08A
M08A
SOP-8
SOP-8
SOP-8
SOP-8
Rail
LM56BIM
2500 Units
Tape &
Reel
LM56BIM
Rail
LM56CIM
2500 Units
Tape &
Reel
LM56CIM
MUA08A
MSOP-8
Rail
T02B
MUA08A
MSOP-8
3500 Units
Tape & Reel
T02B
MUA08A
MSOP-8
Rail
T02C
MUA08A
MSOP-8
3500 Units
Tape & Reel
T02C
© 2000 National Semiconductor Corporation DS012893
www.national.com
1 page  
Typical Performance Characteristics
Quiescent Current vs
Temperature
VREF Output Voltage vs
Load Current
OUT1 and OUT2 Voltage
Levels vs Load Current
DS012893-4
DS012893-5
Trip Point Hysteresis vs
Temperature
Temperature Sensor
Output Voltage vs
Temperature
Temperature Sensor
Output Accuracy vs
Temperature
DS012893-32
DS012893-7
Trip Point
Accuracy vs Temperature
DS012893-8
Comparator Bias Current
vs Temperature
DS012893-9
OUT1 and OUT2 Leakage
Current vs Temperature
DS012893-10
DS012893-11
5
DS012893-12
www.national.com
5 Page 
Application Hints (Continued)
FIGURE 6. Audio Power Amplifier Overtemperature Detector
DS012893-21
FIGURE 7. Simple Thermostat
DS012893-22
11 www.national.com
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet LM56.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LM50 | SOT-23 Single-Supply Centigrade Temperature Sensor | National Semiconductor |
| LM50 | LM50 SOT-23 Single-Supply Centigrade Temperature Sensor (Rev. E) |  Texas Instruments |
| LM50 | Diode (spec sheet) |  American Microsemiconductor |
| LM5000 | High Voltage Switch Mode Regulator | National 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 |