L165 Datasheet, PDF (5/9 Pages) STMicroelectronics – 3A POWER OPERATIONAL AMPLIFIER

Figure 9. Bidirectional DC motor control with TTL/CMOS/µP compatible inputs.
L165
Must be VS2 ≥ VS1 E1, E2 = logic inputs
VS1 = logic supply voltage
Figure 10. Motor current control circuit with external power transistors (Imotor > 3.5A).
D1 to D4 :
VF ≤ 1.2 @ I = 4A
trr ≤ 500 ns
Note : The inputvoltage level is compatible with L291 (5-BIT D/A converter).
The transfer function is : ^IM = ^R4
Vi Rx R3
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