L6238SQT Ver la hoja de datos (PDF) - STMicroelectronics
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L6238SQT Datasheet PDF : 31 Pages
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L6238S
PIN FUNCTIONS
PLCC44 PQFP44 TQFP64
Name
I/O
Function
38
32
45 GATE DRIVER I/O Drivers the Ext. PFET Gate Driver for Higher Power applications.
This pin must be grounded if an external driver is not used.
41
35
51 MASK/DELAY O Internal Logic Signals used for production Testing
43
37
54 CENTER TAP I Motor Center Tap used for differential BEMF sensing.
44
38
55
PWM/ SLEW
I R/C at this input set the Linear Slew Rate and PWM OFF-Time
Figure 1: Brake Delay Timeout vs Cbrake
(Rbrake = 1Meg)
TBD
(s)
D95IN274
3.0
1.0
Figure 2: Linear Slew Rate vs Rslew
SVR
(V/µs)
D95IN275
3.0
1.0
0.3
0.3
0.0
0.0
0.3
1.0
3.0
Cb(µF)
Figure 3: PWM Off - Time vs Rslew/Coff
0.0
10
30
100
300 Rs(KΩ)
Figure 4: PWM Limit Time - Out vs Ctimer
PWM
(µs)
30
D95IN276
PWM
(µs)
D95IN277
10
3
1
100
30
10
300
Coff(pF)
100
300
Ctimer(pF)
5/31
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