L6506 Datasheet PDF | STMicroelectronics

STMicroelectronics L6506

The L6506 is intended for use with dual bridge drivers, such as the L298, quad darlington arrays, such as the L7150, quad DMOS array such as L6114L6115, or discrete power transistors to drive stepper motors and other similar loads. The main function of the device is to sense and control the current in each of the load windings. The RC network on pin 1 sets the operating frequency which is given by the equation : f= 1 0.69 RC for R > 10 K The oscillator provides pulses to set the two flipflops which in turn cause the outputs to activate the drive.

Part No.	L6506
Datasheet	L6506 Download
Manufacturer	STMicroelectronics
Description	CURRENT CONTROLLER
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DESCRIPTION

The L6506/D is a linear integrated circuit designed to sense and control the current in stepping motors and similar devices. When used in conjunction with the L293, L298, L7150, L6114/L6115, the chip set forms a constant current drive for an inductive load and performs all the interface function from the control logic thru the power stage. Two or more devices may be synchronized using the sync pin. In this mode of operation the oscillator in the master chip sets the operating frequency in all chips. BLOCK DIAGRAM (pin’s number referred to DIP-18) DIP18 SO20 ORDERING NUMBERS: L6506 L6506D July 2003 1/8 L6506 -L6506D PIN CONNECTIONS (top view) DIP18 SO20

ABSOLUTE MAXIMUM RATINGS

Symbol VCC Vi Ptot Tj Tstg Parameter Supply Voltage Input Signals Total Power Dissipation (Tamb = 70°C) for DIP18 Total Power Dissipation (Tamb = 70ÉC) for SO20 Junction Temperature Storage Temperature THERMAL DATA Symbol Parameter Rth j-amb Thermal Resistance Junction-ambient Value 10 7 1 0.8 150 -40 to 150 Unit V V W W °C °C Max.