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National Semiconductor Electronic Components Datasheet


M08A

3W Audio Power Amplifier with Shutdown Mode



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M08A pdf
April 2000
LM66
Dual Output Internally Preset Thermostat
General Description
The LM66 is a precision low power thermostat. Two stable
temperature trip points (VT1 and VT2) are generated by divid-
ing down the LM66 1.250V bandgap voltage reference using
a resistors divider network. The LM66 has two digital out-
puts. 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 tempera-
ture exceeds T2 and goes HIGH when the temperature goes
below (T2–THYST). THYST is an internally set 5˚C typical hys-
teresis.
The LM66 is currently available in 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
Key Specifications
n Power Supply Voltage
2.7V to 10V
n Power Supply Current
250 µA (max)
n VREF
1.250V ±1.4% (max)
n Hysteresis Temperature
5˚C
n Internal Temperature Sensor
Output Voltage
(+6.20 mV/˚C x T) +400 mV
n Temperature Trip Point Accuracy
±3˚C (max)
n T1 set point
+73˚C
n T2 set point
+82˚C
Simplified Block Diagram and
Connection Diagram
DS100854-1
Ordering Information
Order Number
NS Tackage
Number
Transport Media
TABLE 1.
LM66CIM-
RLSKB
M08A
Bulk Rail
Typical Application
LM66CIMX-
RLSKB
M08A
2500 Units Tape
& Reel
DS100854-2
DS100854-3
© 2000 National Semiconductor Corporation DS100854
www.national.com



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M08A pdf
Absolute Maximum Ratings (Note 1)
Input Voltage
Input Current at any pin (Note 2)
Package Input Current (Note 2)
Package Dissipation at TA = 25˚C
(Note 3)
ESD Susceptibility (Note 4)
Human Body Model
Machine Model
Soldering Information
SO Package (Note 5) :
12V
5 mA
20 mA
900 mW
1000V
200V
Vapor Phase (60 seconds)
Infrared (15 seconds)
Storage Temperature
215˚C
220˚C
−65˚C to + 150˚C
Operating Ratings (Note 1)
Operating Temperature Range
LM66CIM
Positive Supply Voltage (V+)
Maximum VOUT1 and VOUT2
TMIN TA TMAX
−40˚C TA +125˚C
+2.7V to +10V
+10V
LM66 Electrical Characteristics
The following specifications apply for V+ = 2.7 VDC, and VREF load current = 0 µA unless otherwise specified. Boldface lim-
its apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C unless otherwise specified.
Typical LM66CIM
Units
Symbol
Parameter
Conditions
(Note 6)
Limits
(Limits)
(Note 7)
Temperature Sensor
Trip Point Accuracy (Includes
VREF, Comparator Offset, and
Temperature Sensitivity errors)
+25˚C TA +85˚C
±3 ˚C (max)
Trip Point Hysteresis
TA = +73˚C
6 4.5 ˚C (min)
7.5 ˚C (max)
TA = +82˚C
6 4.5 ˚C (min)
7.5 ˚C (max)
Internal Temperature Sensitivity
+6.20
mV/˚C
Temperature Sensitivity Error
Output Impedance
Line Regulation
+25˚C TA +85˚C
−25˚C TA +125˚C
−40˚C TA −25˚C
−1 µA IL +40 µA
+3.0V V+ +10V,
+25˚C TA +85˚C
+3.0V V+ +10V,
−40˚C TA <25˚C
+2.7V V+ +3.3V
±3
±4
±5
1500
±0.36
±0.61
±2.3
˚C (max)
˚C (max)
˚C (max)
(max)
mV/V (max)
mV/V (max)
mV (max)
VREF Output
VREF
VREF Nominal
VREF Error
1.250V
±1.4
±17.5
V
% (max)
mV (max)
VREF/V+ Line Regulation
+3.0V V+ +10V
+2.7V V+ +3.3V
0.13 0.21 mV/V (max)
0.15 1.5 mV (max)
www.national.com
2



Part Number M08A
Description 3W Audio Power Amplifier with Shutdown Mode
Maker National Semiconductor - National Semiconductor
Total Page 5 Pages
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