L6235 STMicroelectronics, L6235 Datasheet - Page 4

• Manufacturer Part Number: L6235
• Description: DMOS DRIVER FOR THREE-PHASE BRUSHLESS DC MOTOR
• Manufacturer: STMicroelectronics

L6235
PIN DESCRIPTION
4/25
PowerDIP24
SO24/
18, 19
PIN #
6, 7,
10
11
12
13
14
15
16
17
1
2
3
4
5
8
9
PACKAGE
PowerSO36
19, 36
PIN #
1, 18,
10
11
12
13
15
22
24
25
26
27
28
29
30
32
33
RCPULSE
FWD/REV
SENSE
SENSE
RCOFF
VBOOT
TACHO
BRAKE
Name
VREF
OUT
OUT
DIAG
GND
VS
EN
H
1
B
1
3
A
B
Supply Voltage Bootstrap Voltage needed for driving the upper Power
Power Supply Half Bridge 1 and Half Bridge 2 Source Pin. This pin
Power Supply Half Bridge 3 Source Pin. This pin must be connected
Power Supply Half Bridge 3 Power Supply Voltage. It must be
Power Output Output 1
Power Output Output 3.
Sensor Input
Open Drain
Open Drain
Logic Input
Logic Input
Logic Input
Logic Input
RC Pin
RC Pin
Output
Output
Type
GND
Single Ended Hall Effect Sensor Input 1.
Overcurrent Detection and Thermal Protection pin. An
internal open drain transistor pulls to GND when an
overcurrent on one of the High Side MOSFETs is
detected or during Thermal Protection.
must be connected together with pin SENSE
Power Ground through a sensing power resistor.
RC Network Pin. A parallel RC network connected
between this pin and ground sets the Current
Controller OFF-Time.
Ground
packages, these pins are also used for heat
dissipation toward the PCB. On PowerSO36 package
the slug is connected on these pins.
Frequency-to-Voltage open drain output. Every pulse
from pin H
pulse.
RC Network Pin. A parallel RC network connected
between this pin and ground sets the duration of the
Monostable Pulse used for the Frequency-to-Voltage
converter.
together with pin SENSE
sensing power resistor. At this pin also the Inverting
Input of the Sense Comparator is connected.
Selects the direction of the rotation. HIGH logic level
sets Forward Operation, whereas LOW logic level sets
Reverse Operation.
If not used, it has to be connected to GND or +5V..
Chip Enable. LOW logic level switches OFF all Power
MOSFETs.
If not used, it has to be connected to +5V.
Current Controller Reference Voltage.
Do not leave this pin open or connect to GND.
Brake Input pin. LOW logic level switches ON all High
Side Power MOSFETs, implementing the Brake
Function.
If not used, it has to be connected to +5V.
MOSFETs.
connected to the supply voltage together with pin VS
terminals.
1
is shaped as a fixed and adjustable length
On
Function
A
to Power Ground through a
PowerDIP24
and
SO24
B
to
A
.