L6460 STMicroelectronics, L6460 Datasheet - Page 31

• 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

L6460
4.2
4.3
Charge pump regulator
L6460 implements a charge pump regulator to generate a voltage over V
is used to drive internal circuits and the external FET driver and cannot be used for any
other purpose.
This circuit is always under the supervisory circuit control, so no regulator can start before
the V
below its under voltage falling threshold, all the regulators will be switched off.
The charge pump circuit is disabled when L6460 is in “low power mode”.
Figure 4.
An example of capacitors value is:
V3v3 regulator
V3v3 is the output of an internal regulator used to supply some low voltage internal circuits.
This regulator is not intended to provide external current so it must not be used to supply
external loads. An external capacitor must always be connected from this pin to GND,
recommended value is in the range 80 ÷ 120 nF.
Pump
voltage reaches its undervoltage rising threshold. If V
EnVPump
Charge pump block diagram
Driver
V
SupplyInt
Doc ID 17713 Rev 1
C
M1
M2
FLY
CLK
= 100 nF and C
BOOST
-
+
Ref
BOOST
= 1 µF
V
V
CPL
CPH
Supply
Pump
C
Pump
BOOST
C
FLY
external diodes are required
for V
Supply
voltage falls down
lower than 15V ,
Supply
Internal supplies
.This voltage
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