L6470PD STMicroelectronics, L6470PD Datasheet - Page 32

• Manufacturer Part Number: L6470PD
• Description: Motor / Motion / Ignition Controllers & Drivers dSPIN 7.0A 8 - 45 V DMOS Motor Driver
• Manufacturer: STMicroelectronics
• Type: 2 Phase Stepper Motor Driverr

Specifications of L6470PD

• Rohs: yes
• Product: Stepper Motor Controllers / Drivers
• Operating Temperature: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Package / Case: POWERSO-36
• Number Of Outputs: 4
• Output Current: 3 A
• Output Voltage: 3.2 V
• Power Dissipation: 5 W

Functional description
6.17
6.17.1
6.17.2
32/70
Figure 14. Internal 3 V linear regulator
BUSY\SYNC pin
This pin is an open drain output which can be used as the busy flag or synchronization
signal according to the SYNC_EN bit value (STEP_MODE register).
BUSY operation mode
The pin works as busy signal when the SYNC_EN bit is set low (default condition). In this
mode the output is forced low while a constant speed, absolute positioning or motion
command is under execution. The BUSY pin is released when the command has been
executed (target speed or target position reached). The STATUS register includes a BUSY
flag that is the BUSY pin mirror (see
In the case of daisy chain configuration, BUSY pins of different ICs can be hard-wired to
save host controller GPIOs.
SYNC operation mode
The pin works as synchronization signal when the SYNC_EN bit is set high. In this mode a
step-clock signal is provided on the output according to a SYNC_SEL and STEP_SEL
parameter combination (see
V
DD
μC
INTERNAL voltage regulator
Logig supplied by
V
REG
3V
V
DGND
DD
Section
Doc ID16737 Rev 5
IC
V
SA
Section
9.1.19).
V
s
AGND
V
SB
9.1.22).
3.3V
REG.
V
BAT
V
REG
EXTERNAL voltage regulator
Logig supplied by
V
DGND
DD
IC
V
SA
V
s
AGND
L6470
V
SB