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

Doc ID 17713 Rev 1

49/139

   

   

   

Whichever configuration is used (regulator or controller), a ceramic capacitor must be 
connected on the output pin towards ground to guarantee the stability of the regulator; the 
value of this capacitance is in the range of 100 nF to 1 µF depending on the regulated 
voltage;

●

V

LINmain_OUT

 = 0.8 V --> 1 µF

●

0.8V< V

LINmain_OUT

 < 2.5 V --> 0.68 µF

●

2.5V= V

LINmain_OUT

  5 V --> 0.33 µF

●

V

LINmain_OUT

 > 5 V --> 0.1 F

When this regulator is disabled, the whole circuit is switched off and the current 
consumption is reduced to a very low level both from V3v3 and from V

Supply

. When in this 

condition, the output pin is pulled low by an internal switch.

Dri

v

e

r 

V

LINmain_Ref

 

+ 

- 

Body Diode

 

C

load

 

R

a

 

R

b

 

V

LINmain_FB

 

V

supply 

V

LINmain_OUT