L6460 STMicroelectronics, L6460 Datasheet - Page 48

• 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

Linear main regulator
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Linear main regulator
The linear main regulator is directly powered by V
regulators that L6460 could consider as a system regulator. This means that the voltage
generated by this regulator is not used to power any internal circuit, but L6460 will check
that the feedback voltage V
internal functions. When an under-voltage event (with a duration longer than period t
defined by the deglitch filter) is detected during normal operation, L6460 will enter in reset
state and it will signal this event to the microcontroller by pulling low the nRESET pin and
disabling most of its internal blocks.
Here are summarized the primary features of the regulator:
The internal series element is a P-channel MOS device. The voltage regulator will regulate
its output so that feedback pin equals V
calculated using the formula:
Figure 9.
To extend the output current capability this regulator can be used as a controller for an
external active component able to provide higher current (i.e. a Darlington device); the
external power element allows the handling of an higher current since it dissipates the
power externally (the power dissipated by a linear driver supplied at V
voltage V
–
–
–
–
–
LINmain_OUT
Regulated output voltage from 0.8V to V
Band gap generated internal reference voltage.
Short circuit protected (output current is clamped to 22mA typ).
Under voltage signal (both continuous and latched) accessible through serial
interface.
Low power dissipation mode.
Linear main regulator
with an output current I
V
V
LINmain_FB
LINmain_OUT
supply
Doc ID 17713 Rev 1
Body Diode
is in the good value range before enabling all its
LINmain_FB
= V
+
-
LINmain_ref
OUT
V
LINmain_ref
is about: P
, therefore the regulated voltage can be
Supply
Supply
*(R
-2V with a maximum load of 10mA.
voltage and it is one of the
a
+R
V
V
d
b
= (V
LINmain_FB
LINmain_OUT
)/R
b
Supply
Supply
-V
Cc
LINmain_OUT
and regulating a
R
R
b
a
prim_uv
)*I
L6460
OUT
.