Datasheet

DocID022729 Rev 5 17/70
L6472 Pin connection
70
Pin list
Table 6. Pin description
Number
Name Type Function
POWERSO HTSSOP
24 17 VDD Power Logic output supply voltage (pull-up reference)
9 6 VREG Power
Internal 3 V voltage regulator output and 3.3 V
external logic supply
10 7 OSCIN Analog input
Oscillator pin 1. To connect an external oscillator or
clock source. If this pin is unused, it should be left
floating.
11 8 OSCOUT Analog output
Oscillator pin 2. To connect an external oscillator.
When the internal oscillator is used this pin can
supply 2/4/8/16 MHz. If this pin is unused, it should
be left floating.
13 10 CP Output Charge pump oscillator output
14 11 Vboot Supply voltage
Bootstrap voltage needed for driving the high-side
power DMOS of both bridges (A and B).
8 5 ADCIN Analog input Internal analog-to-digital converter input
4, 5 2
VSA Power supply
Full bridge A power supply pin. It must be connected
to VSB.
33, 34 26
15, 16 12
VSB Power supply
Full bridge B power supply pin. It must be connected
to VSA.
22, 23 16
127
PGND Ground Power ground pin
19 13
2, 3 1 OUT1A Power output Full bridge A output 1
35, 36 28 OUT2A Power output Full bridge A output 2
17, 18 14 OUT1B Power output Full bridge B output 1
20, 21 15 OUT2B Power output Full bridge B output 2
12 9 AGND Ground Analog ground.
7 4 SW Logical input
External switch input pin. If not used the pin should
be connected to VDD.
28 21 DGND Ground Digital ground
29 22 BUSY
\SYNC Open drain output
By default, this BUSY pin is forced low when the
device is performing a command. Otherwise the pin
can be configured to generate a synchronization
signal.
25 18 SDO Logic output Data output pin for serial interface
27 20 SDI Logic input Data input pin for serial interface
26 19 CK Logic input Serial interface clock
30 23 CS
Logic input Chip select input pin for serial interface