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L6204D Datasheet(PDF) 4 Page - STMicroelectronics |
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L6204D Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 12 page L6204 4/12 APPLICATION DIAGRAM CIRCUIT DESCRIPTION L6204 is a dual full bridge IC designed to drive DC motors, stepper motors and other inductive loads. Each bridge has 4 power DMOS transistor with RDSon = 1.2Ω and the relative protection and control circuitry. (see fig. 3) The 4 half bridges can be controlled independently by means of the 4 inputs IN!, IN2, IN3, IN4 and 2 en- able inputs ENABLE1 and ENABLE2. External connections are provided so that sensing resistors can be added for constant current chopper applications. LOGIC DRIVE (*) L = Low H = High X = Don’t care (*) True table for the two full bridges INPUTS OUTPUT MOSFETS EN1=EN2=H IN1 IN2 IN3 IN4 L L Sink 1, Sink 2 L H Sink 1, Source 2 H L Source 1, Sink 2 H H Source 1, Source 2 EN1=EN2=L X X All transistor turned OFF STEPPER MOTOR A B Vs2 OUT3 OUT4 OUT2 OUT1 Vs1 D1 C1 VBOOT IN1 ENABLE1 IN2 CHARGE PUMP THERMAL SHUT DOWN BOOTSTRAP OSCILLATOR C2 D2 SENSE1 SENSE1 RS1 GND SENSE2 SENSE2 RS2 Vs IN4 ENABLE 2 IN3 |
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