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L9935 Folha de dados(PDF) 6 Page - STMicroelectronics

Nome de Peças L9935
Descrição Electrónicos  TWO-PHASE STEPPER MOTOR DRIVER
PDF  19 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9935 Folha de dados(HTML) 6 Page - STMicroelectronics

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background image
I
A
1.8
1.1
1
0.8
0.6
0.4
0.2
0.075
0
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
IHL
ILH
ILL
typical current limitation of high side transistor
limit recommended for usual application
Ω
R
suggested range of operation
D99AT418
Figure 2. Typical average load current dependence on RSense.
DRIVE
LOGIC
CURRENT
LOGIC
bit3, (bit0)
bit5, (bit2)
bit4, (bit1)
CURRENT ADJUST
INHIBIT
ON HH
LOAD
+
-
τ
D11
M11
D12
M12
D11
A1
A2
VS
R1
R1 EXTERNAL
SENSE RESISTOR
D12
COMP1
D22
D21
D22
M22
D21
M21
D99AT419
Full Bridge Function
Figure 3. Displays a full bridge including the current sense circuit.
L9935
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