參數(shù)資料
型號(hào)： E-L9935013TR
廠商： STMICROELECTRONICS
元件分類： 運(yùn)動(dòng)控制電子
英文描述： STEPPER MOTOR CONTROLLER, 2.5 A, PDSO20
封裝： ROHS COMPLIANT, POWER, MO-166, SOP-20
文件頁(yè)數(shù)： 4/29頁(yè)
文件大?。?/td> 311K
代理商： E-L9935013TR
Functional description
L9935
5
Functional description
5.1
Basic structure
The L9935 is a dual full bridge driver for inductive loads with a chopper current regulation.
Outputs A1 and A2 belong to full bridge A Outputs B1 and B2 belong to full bridge B.
The polarity of the bridges can be controlled by bit0 and bit3 (for full bridge A, bit3, for full
bridge B, bit0). Bit5, bit4 (for full bridge A) and bit2, bit1 (for full bridge B) control the
currents. Bit3 high leads to output A1 high. Bit0 high leads to output B1 high.
Current setting Table 5 using a 0.33W sense resistor.
Figure 4.
Typical average load current dependence on RSense.
Table 5.
Current setting
bit5, bit2
bit4, bit1
IQX (Typ.)
IRX/max
Remark
H
0
0%
H
L
60mA
internally sensed
L
H
550mA
61%
L
900mA
100%
I
A
1.8
1.1
1
0.8
0.6
0.4
0.2
0.075
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
R
suggested range of operation
D99AT418
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