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參數資料
| 型號： | L8229 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運動控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 1.5 A, PDSO24 |
| 封裝： | LEAD FREE, SSO-24 |
| 文件頁數： | 1/42頁 |
| 文件大小： | 858K |
| 代理商： | L8229 |
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Preliminary Data
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
September 2006
Rev 5
1/42
1
L8229
Dual DMOS full bridge stepper/DC motor driver
Features
■ Flexible Motor Driver configurations:
– Dual Full Bridge for one bipolar Stepping motor.
– Dual or single DC motor driver.
■ Programmable by two input pins to achieve
one of the following functionalities:
– Pin to pin compatible with ST L6219 or
– Stepping motor direct control with 8 current
levels or
– Driver parameters control by means of
Serial Port.
■ Mixed Decay.
■ Micro stepping function.
■ BCD5 technology (No Charge Pump required).
■ Supply Range from 8V to 38V.
■ IOUT up to 1.2A (1.5A peak).
■ RDSon= 0.85Ω (typ) for each switch.
■ Input logic level compatible with 3.3V or 5V
control signals.
■ Package: PwSSO24.
Description
This IC is designed to be very flexible in driving
Stepping or DC motors.
By connecting to Vcc or to Gnd two program pins
(pin 7 and 18) the user has the possibility to set
up the device in different configurations.
1.
The first configuration is an identical
application of ST L6219 but with increased
current. In this configuration L8229 provides
a continuous current of the output stage up
to 1.2A (1.5A peak).
2.
The second configuration allows a
functionality similar to previous one but with
the possibility of choosing 8 different current
levels to perform a more accurate stepping
functionality. This is achieved by multiplexing
the input pins dedicated to set the level of the
current. Additionally the user can set the
mixed mode decay for current recirculation.
3,4. The third and fourth configurations are
intended to provide a very flexible
programming for several parameters useful
to drive different kind of Stepping and DC
motors. This is achieved by means of a serial
port interface that allows the user to
configure the following parameters:
a)
Current levels (32 values for each
bridge).
b)
Current direction.
c)
Type of decay for Stepping motors
(Mix/Slow) or for DC motors (Fast/Slow).
d)
Vref input (Ext/Int).
e)
Vref divider (:5/:10).
f)
Blanking time (4 values).
g)
Oscillator freq divider (4 values).
h)
Off time (32 values).
i)
Fast decay time (16 values).
j)
Syncronous rectification.
The functionalities of the two configurations are
identical except that the internal bit address (first
bit of SPI words) can be programmed to be 1 or 0:
this enables two different L8229 to share a
common serial bus.
Order code
PwSSO24
Part number
Package
Packing
L8229
PwSSO24
Tube
Obsolete
Product(s)
- Obsolete
Product(s)
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