STMicroelectronics FlexSPIN: SPI configurable stepper and DC multi motor driver evaluation board EVAL6460 EVAL6460 Fiche De Données

Doc ID 17713 Rev 1

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voltages. This regulator can be used to drive an external bipolar pass transistor to 
generate high current/low ripple output voltages.

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One bidirectional serial interface with address detection so that different ICs can share 
the same data bus.

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Integrated power sequencing and supervisory functions with fault signaling through 
serial interface and external reset pin.

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Fourteen general purpose I/Os that can be used to drive/read internal/external 
analog/logic signals.

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One 

8-bit/9-bit A/D converter (100 kS/s @ 9-bit, 200 kS/s @8-bit). It can be used to 

measure most of the internal signals, of the input pins and a voltage proportional to IC 
temperature.

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Current sink DAC:

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Three output current ranges: up to 0.64/6.4/64 mA.

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64 (6-bit programmable) available current levels for each range.

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5 V output tolerant.

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Two operational amplifiers:

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3.3 V supply, rail to rail input compatibility, internally compensated.

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They can have all pins externally accessible or can be internally configured as a 
buffer o make internal reference voltages available outside of the chip.

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Unity gain bandwidth > 1 MHz.

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They can also be set as comparators with 3.3 V input compatibility and low offset.

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Two 3.3 V pass switches with 1 

Ω R

DSon

 and short circuit protected.

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Programmable watchdog function.

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Thermal shutdown protection with thermal warning capability.

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Very low power dissipation in “low power mode” (~35 mW)

L6460 is intended to maximize the use of its components, so when an internal circuit is not 
used it could be employed for other applications. Bridge 3, for example, can be used as a full 
bridge or to implement two switching regulators with synchronous rectification: to obtain this 
flexibility L6460 includes 2 separate regulation loops for these regulators; when the bridge is 
used as a motor driver, the 2 regulation loops can be redirected on general purpose I/Os to 
leave the possibility to assembly a switching regulator by only adding an external FET.