L6235N STMicroelectronics, L6235N Datasheet - Page 14
![IC DRIVER 3PHASE MOTOR 24-PWRDIP](/photos/7/45/74572/l6235n_sml.jpg)
L6235N
Manufacturer Part Number
L6235N
Description
IC DRIVER 3PHASE MOTOR 24-PWRDIP
Manufacturer
STMicroelectronics
Type
Driverr
Datasheet
1.L6235D013TR.pdf
(25 pages)
Specifications of L6235N
Applications
DC Motor Driver, Brushless (BLDC), 3 Phase
Number Of Outputs
1
Current - Output
5.6A
Voltage - Supply
12 V ~ 52 V
Operating Temperature
-25°C ~ 125°C
Mounting Type
Through Hole
Package / Case
24-DIP (0.300", 7.62mm)
Operating Supply Voltage
7 V to 52 V
Supply Current
0.006 A
Mounting Style
Through Hole
Motor Type
Three Phase DC Brushless
No. Of Outputs
3
Output Current
7.1A
Output Voltage
52V
Supply Voltage Range
8V To 52V
Driver Case Style
DIP
No. Of Pins
24
Rohs Compliant
Yes
For Use With
497-4935 - BOARD MOTOR BRUSHLESS DC L6235
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Load
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
497-5353-5
L6235N
L6235N
L6235
TACHO
A tachometer function consists of a monostable, with constant off time (t
signal (H
14. For component values refer to Application Information section.
The monostable output drives an open drain output pin (TACHO). At each rising edge of the Hall Effect Sensors
H
t
to the pin RCPULSE. Figure 16 gives the relation between t
where C
By connecting the tachometer pin to an external pull-up resistor, the output signal average value V
tional to the frequency of the Hall Effect signal and, therefore, to the motor speed. This realizes a simple Fre-
quency-to-Voltage Converter. An op amp, configured as an integrator, filters the signal and compares it with a
reference voltage V
Figure 14. Tacho Operation Waveforms.
14/25
PULSE
1
, the monostable is triggered and the MOSFET connected to pin TACHO is turned off for a constant time
t
PULSE
V
(see Figure 15). The off time t
M
PUL
1
). It allows developing an easy speed control loop by using an external op amp, as shown in Figure
=
should be chosen in the range 1nF … 100nF and R
= 0.6 · R
t
----------------- - V
P ULS E
T
REF
PUL
, which sets the speed of the motor.
DD
· C
V
PUL
TACHO
H
H
H
V
M
1
2
3
PULSE
can be set using the external RC network (R
t
PULSE
V
T
DD
PULSE
PUL
and C
in the range 20K
PULSE
PUL
, R
), whose input is one Hall Effect
PUL
. We have approximately:
… 100K .
PUL
, C
PUL
) connected
M
is propor-