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L6235Q Datasheet(PDF) 25 Page - STMicroelectronics

Part # L6235Q
Description  Tacho output for speed loop
PDF  33 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6235Q Datasheet(HTML) 25 Page - STMicroelectronics

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L6235Q
Output current capability and IC power dissipation
Doc ID 018997 Rev 2
25/33
6
Output current capability and IC power dissipation
Figure 24 shows the approximate relation between the output current and the IC power
dissipation using PWM current control.
For a given output current the power dissipated by the IC can be easily evaluated, in order to
establish which package should be used and how large the onboard copper dissipating area
must be to guarantee a safe operating junction temperature (125 °C maximum).
Figure 24.
IC power dissipation vs. output power
AM02570v1
No PWM
f
SW = 30 kHz (slow decay)
Test Condition s:
Supply Voltage = 24 V
00.5
11.5
22.5
3
0
2
4
6
8
10
P
I
OUT
[A]
D [W]
IOUT
I1
I3
I2
IOUT
IOUT



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