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
1
27
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
