SAA1042V Motorola, SAA1042V Datasheet
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SAA1042V
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SAA1042V Summary of contents
Page 1
... The center four ground pins are connected to the copper alloy heat tab and improve thermal conduction from the die to the circuit board. Drive Stages Designed for Motors: 6.0 V and 12 V: SAA1042V 500 mA/Coil Drive Capability Built–In Clamp Diodes for Overvoltage Suppression ...
Page 2
... I out = 500 mA I out = 50 mA Output Leakage Current, Pin 6 = Open ( clamp max ) Clamp Diode Forward Voltage (Drop 500 mA) Clock Frequency Clock Pulse Width Set Pulse Width Set Control Voltage, High State Set Control Voltage, Low State 2 SAA1042 Symbol SAA1042V Unit V clamp 6 500 mA ...
Page 3
... V clamp – – where clamp diodes forward voltage drop (see Figure 4) V clamp : 20 V for SAA1042V V clamp : SAA1042AV Pins 2 and 15 can be linked, in this case Set/Bias Input — (Pin 6) This input has two functions: 1) The resistor R B adapts the drivers to the motor current. ...
Page 4
... MOTOR CURRENT/COIL (mA) Figure 5. Power Dissipation versus Logic Supply Voltage 500 300 200 100 5.0 4.0 5 SUPPLY VOLTAGE (V) Figure 6. Timing Diagram Don’t Care High Output Impedance MOTOROLA ANALOG IC DEVICE DATA 50 70 100 200 300 400 500 ...
Page 5
... Selectable Step Rates with the Time Base Derived from the Line Frequency MC14046B 220 k 15 Phase 220 V Comp 0 8.2 F Figure 8. Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length 100 MOTOROLA ANALOG IC DEVICE DATA SAA1042 Figure 7. Typical Application VCO 4.7 nF 120 1400 Hz Printed circuit board heatsink example 2 ...
Page 6
... Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “ ...