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L6223 Datasheet

DMOS PROGRAMMABLE HIGH SPEED UNIPOLAR STEPPER MOTOR DRIVER

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L6223 pdf
L6223
DMOS PROGRAMMABLE
HIGH SPEED UNIPOLAR STEPPER MOTOR DRIVER
HIGH EFFICIENCY UNIPOLAR STEPPER
MOTOR DRIVER
HIGH SPEED UNIPOLAR STEPPER MOTOR
DRIVER
SUPPLY VOLTAGE UP TO 46V
PHASE CURRENT UP TO 1A
UP TO 2A/PHASE IN DUAL CONFIGURA-
TION
PARALLEL CMOS µP INTERFACE FOR
FULL/HALF STEP MOTOR ROTATION
SERIAL INTERFACE FOR 6 BIT PROGRAM-
MING
CLOSE/OPEN LOOP, 8 PWM CURRENT
LEVELS
DUAL PWM FREQUENCY SELECTION
INPUT BIDIRECTIONALLY PROTECTED
THERMAL SHUTDOWN
DESCRIPTION
The L6223 is a programmable integrated system
for driving a unipolar stepper motor. It is realized
in Multipower BCD technology. The DMOS output
BLOCK DIAGRAM
MULTIPOWER BCD TECHNOLOGY
POWERDIP
16+2+2
ORDERING NUMBER : L6223
stage, realized by a single upper DMOS switch
and four lower DMOS, can deliver up to 1A/phase
with motor supply voltages up to 46V.
All inputs are CMOS and microprocessor compat-
ible. An internal 6-bit shift register allows the de-
vice to be programmed to select different duty cy-
cles in open loop mode and different chopping
frequencies in closed loop mode. When the cur-
rent control is in closed loop mode it is also possi-
ble to select a reduced current chopping level to
optimize system efficiency. The L6223 is de-
March 1998
1/33


STMicroelectronics Electronic Components Datasheet

L6223 Datasheet

DMOS PROGRAMMABLE HIGH SPEED UNIPOLAR STEPPER MOTOR DRIVER

No Preview Available !

L6223 pdf
L6223
signed to work with a single sense resistor. Dur-
ing chopping t(OFF) time the current is reduced
by half, improving efficiency. Higher current appli-
cations can be achieved by paralleling two L6223.
The L6223 is mounted in a 20-lead Powerdip
package, (16+2+2). Four ground leads conduct
heat to dedicated heatsink area on the PCB.
ABSOLUTE MAXIMUM RATINGS
Symbol
VSS
VS
VI
VO
VOpeak
Ipl
Iph
Ptot
Vsense
Tstg, Tj
Parameter
Logic supply
Supply voltage
Logic input voltage (*)
Output voltage
Output peak voltage (tpk = 5µs,10% d.c.)
Output sink peak current d.c. 10% t(on) = 10µs
Output source peak current d.c. 10%,t(on) = 10µs
Total power dissipation: Tpins = 90°C
Tamb = 70°C (**)
Sensing voltage
Storage and junction temperature
Value
7
50
– 0.3V to VSS
100
125
3
6
4.3
2
– 1V to VSS
– 40 to 150
Unit
V
V
V
V
A
A
W
W
°C
( * ) Oscillator running
( ** ) 4 cm2 copper area on PCB, see fig. 34
PIN CONNECTION ( top wiew )
THERMAL DATA
Rthj-pins
Rthj-amb
Thermal Resistance Junction-pins
Thermal Resistance Junction-ambient
2/33
Max 14 °C/W
Max 60 °C/W


Part Number L6223
Description DMOS PROGRAMMABLE HIGH SPEED UNIPOLAR STEPPER MOTOR DRIVER
Maker STMicroelectronics
Total Page 30 Pages
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