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LB1948MC-BH Datasheet(PDF) 7 Page - ON Semiconductor

No. de pieza LB1948MC-BH
Descripción Electrónicos  Motor Driver, Forward/Reverse Low Saturation Voltage Drive
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Fabricante Electrónico  ONSEMI [ON Semiconductor]
Página de inicio  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

LB1948MC-BH Datasheet(HTML) 7 Page - ON Semiconductor

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LB1948MC
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7
Thermal Shutdown Circuit Block Diagram
Vref
Reference
voltage
circuit
Thermal
shutdown
circuit
Drive circuit
Function equivalent circuit
Note: The above is an example of thermal shutdown circuits although there are some differences from the actual internal
circuit.
Thermal Shutdown Operation
The thermal shutdown circuit compares the voltage of the heat sensitive element (diode) with the reference voltage and
shuts off the drive circuit at a certain temperature to protect the IC chip from overheating.
ICC -- VCC
IIN -- VIN
VO(sat) -- IO
ICC -- Ta
40
0
10
20
30
0
5
10
15
20
0
5
10
15
20
400
0
100
200
300
0.6
0
0.1
0.3
0.5
0.2
0.4
0
100
200
300
400
500
600
40
0
10
20
30
-40
-20
0
20
40
60
80
100
120
140
VIN=5V
(= IN1 / IN2 or IN3 / IN4)
H / H
H / L, L /H
L / L
VCC=12V
IN1~4
VCC=12V
VCC=12V
(IN1 / 2)
H /H
H / L, L /H
Supply voltage, VCC -- V
Input voltage, VIN -- V
Output current, IO -- mA
Ambient temperature, Ta --
°C
High
side
and
Low
side


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