L6460 STMicroelectronics, L6460 Datasheet - Page 44

• Manufacturer Part Number: L6460
• Description: MOSFET & Power Driver ICs SPI Config Stepper DC Multi Motor DRV
• Manufacturer: STMicroelectronics
• Type: Full-Bridge Driverr

Specifications of L6460

• Product: Half-Bridge Drivers
• Rise Time: 0.4 us
• Fall Time: 0.4 us
• Supply Voltage (max): 38 V
• Supply Voltage (min): 13 V
• Supply Current: 11 mA
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Number Of Drivers: 4
• Output Current: 10 mA
• Output Voltage: 30 V
• Package / Case: TQFP-64
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Power sequencing
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Power sequencing
As soon as V
charge pump circuit; once V
begins a sequence that starts the regulators considered system regulators.
A regulator is considered a System regulator if:
Once V
voltage rising threshold, L6460 enters in the normal operating state, that will release
nRESET pin and will wait for SPI commands.
L6460 will reduce the noise introduced in the system by switching out of phase all its power
circuits (switching regulators, bridges and charge pump).
The L6460's startup sequence of operation is the following:
–
–
–
–
–
–
–
–
–
–
Supply
It has to start in on state without any user action.
It is included in the power-up sequence.
Its under-voltage event is considered by L6460 as an error condition to be
signaled through nRESET pin.
start V
sample startup configuration
wait enable if slave device
start charge pump
start system regulators (see order in
if master send enable to slave device
wait until V
Supply
and V
3v3
and V
SupplyInt
internal linear regulator
GPIO_SPI
SupplyInt
, V
Pump
becomes ok
Pump
Doc ID 17713 Rev 1
voltage reaches its under voltage rising threshold, L6460
are above their power on reset level, L6460 will start the
and all the system regulators are over their under
Section
8.6)
L6460