L6219DS
Dual Full-Bridge PWM Motor Driver
Features and Benefits
Description
▪ Interchangeable with SGS L6219DS
▪ 750 mA Continuous Output Current
▪ 45 V Output Sustaining Voltage
▪ Internal Clamp Diodes
▪ Internal PWM Current Control
▪ Low Output Saturation Voltage
▪ Internal Thermal Shutdown Circuitry
▪ Similar to Dual PBL3717, UC3770
The L6219DS motor driver is designed to drive both windings
of a bipolar stepper motor or bidirectionally control two DC
motors. Both bridges are capable of sustaining 45 V and include
internal pulse-width modulation (PWM) control of the output
current to 750 mA. The outputs have been optimized for a low
output saturation voltage drop (less than 1.8 V total source
plus sink at 500 mA).
Package: 24 pin SOICW (suffix LB)
The bridges include both ground clamp and flyback diodes for
protection against inductive transients. Internally generated
delays prevent crossover currents when switching current
direction. Special power-up sequencing is not required. Thermal
protection circuitry disables the outputs if the chip temperature
exceeds safe operating limits.
For PWM current control, the maximum output current is
determined by user selection of a reference voltage and sensing
resistor. Two logic-level inputs select output current limits of
0, 33, 67, or 100% of the maximum level. A PHASE input to
each bridge determines load current direction.
The L6219DS is supplied in a 24-pin surface-mountable SOIC,
with 4 internally-fused leads for maximum package power
dissipation in the smallest possible construction. It is lead (Pb)
free with 100% matte tin leadframe plating.
Not to scale
Typical Application
STEPPER
MOTOR
V
BB
VBB
1
24
RS
RC
FROM
μP
4
5
20
6
19
7
18
8
17
56 k7
RT
Q2
PWM 2
10
REF
CC
21
C
99
V
22
2
PWM 1
C
RC
1
3
+
RS
23
2
Q1
16
15
V
REF
14
11
12
820 pF
CT
FROM
μP
820 pF
VCC
13
+5 V
C
T
56 k7
RT
Dwg. EP-008B1
29319.43I
L6219DS
Dual Full-Bridge PWM Motor Driver
Selection Guide
L6219DSTR-T
Operating Ambient Temperature Range
TA (°C)
Packing
Part Number
1000 pieces per reel
–20 to 85
Absolute Maximum Ratings
Characteristic
Symbol
Notes
Rating
Units
Motor Supply Voltage
VBB
45
V
Logic Supply Voltage
VCC
7.0
V
Logic Input Voltage Range
VIN
–0.3 to VCC+0.3
V
Output Emitter Voltage
VSENSE
1.5
V
Output Current, Peak
IOUT(pk)
1.0
A
750
mA
Output Current, Continuous
Output current rating may be limited by duty
cycle, ambient temperature, and heat sinking.
Under any set of conditions, do not exceed
the specified peak current rating or a junction
temperature of +150°C.
IOUT
Operating Ambient Temperature
TA
–20 to 85
ºC
Maximum Junction Temperature
TJ(max)
150
ºC
Tstg
–55 to 150
ºC
Storage Temperature
Range S
Thermal Characteristics
Characteristic
Package Thermal Resistance
Symbol
Test Conditions*
RθJA
Value Units
1-layer PCB with copper limited to solder pads
77
ºC/W
1-layer PCB with 3.57 in.2 of copper area
49
ºC/W
6
ºC/W
RθJT
*Additional thermal information available on the Allegro website.
2.5
R θJT = 6°C/W
2.0
1.5
R θJA= 49°C/W
1.0
R θJA= 77°C/W
0.5
0
25
50
75
100
TEMPERATURE in °C
125
150
Dwg. GP-019C
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
2
L6219DS
Dual Full-Bridge PWM Motor Driver
PWM Current-Control Circuitry
Phase Truth Table
VBB
CHANNEL 1
TERMINAL NUMBERS
SHOWN.
24
PHASE
OUTA
H
H
L
L
L
H
OUTB
OUT B
1
21
OUT A
V REF 15
20 k7
23
w10
40 k7
SENSE
COMP IN –
ONE
SHOT
+
22
RC
10 k7
I 0 20
14
CC
RS
I 1 17
RT
SOURCE
DISABLE
RC
CT
Dwg. EP-007-5
Pin-Out Diagram
OUT 1A
1
OUT 2A
2
SENSE 2
VBB
1
3
2
24
LOAD
SUPPLY
23
SENSE 1
22
COMP IN 1
21
OUT 1B
OUT 2B
5
20
I 01
GROUND
6
19
GROUND
GROUND
7
18
GROUND
I 02
8
17
I11
I12
9
16
PHASE 1
15
V REF 1
14
RC 1
13
LOGIC
SUPPLY
PHASE 2
10
V REF 2
11
RC 2
12
Q
2
PWM 1
4
PWM 2
COMP IN 2
Q1
V CC
Dwg. PP-005-3
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Copyright © 1998, 2003 Allegro MicroSystems, Inc.
3
L6219DS
Dual Full-Bridge PWM Motor Driver
ELECTRICAL CHARACTERISTICS at TA = +25°C, TJ 150°C, VBB = 45 V, VCC = 4.75 V to 5.25 V,
VREF = 5.0 V (unless otherwise noted).
Limits
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
10
—
45
V
VOUT = VBB
—
< 1.0
50
μA
VOUT = 0
—
很抱歉,暂时无法提供与“L6219DSTR”相匹配的价格&库存,您可以联系我们找货
免费人工找货