Datasheet

UNISONIC TECHNOLOGIES CO., LTD
L6219
LINEAR INTEGRATED CIRCUIT
DUAL FULL-BRIDGE PWM
MOTOR DRIVER

DESCRIPTION
The L6219 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 45V and include internal
pulse-width modulation (PWM) control of the output current to
750mA .The outputs have been optimized for a low output saturation
voltage drop (less than 1.8V total source plus sink at 500mA ).
For PWM current control, the maximum output current is
determined by the user’s 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 bridges include both ground clamp and flyback diodes for
protection against inductive transients. Internally generated delays
prevent cross-over 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.

SOP-24
FEATURES
*Interchangeable with SGS L6219
*750mA Continuous Output Current
*45V Output Sustaining Voltage
*Internal Clamp Diodes
*Internal PWM Current Control
*low Output Saturation Voltage
*Internal Thermal Shutdown Circuitry

ORDERING INFORMATION
Ordering Number
L6219G-S24-R
L6219G-S24-R

Package
SOP-24
(1)Packing Type
(1) R: Tape Reel
(2)Package Type
(2) S24: SOP-24
(3)Green Package
(3) G: Halogen Free and Lead Free
Packing
Tape Reel
MARKING
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Copyright © 2015 Unisonic Technologies Co., Ltd
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L6219
PIN CONFIGURATION
24
LOAD
SUPPLY
23
SENSE1
22
COMP IN1
21
OUT1B
5
20
I01
6
19
GROUND
7
18
GROUND
I02
8
17
I11
I12
9
16
PHASE1
PHASE2
10
15
VREF1
VREF2
11
14
RC1
RC2
12
1
OUT2A
2
SENSE2
3
COMP IN2
4
OUT2B
GROUND
GROUND

VBB
1
2
θ2
PWM1
OUT1A
PWM2

LINEAR INTEGRATED CIRCUIT
θ1
Vcc
13
LOGIC
SUPPLY
PWM CURRENT-CONTROL CIRCUITRY
CHANNEL 1
TERMINAL NUMBERS
SHOWN
VBB
24
OUTB
1
21
OUTA
VREF
15
23
20kΩ
÷ 10
40kΩ
I0
20
COMP IN
22
RC
10kΩ
RS
I1
+
SOURCE
DISABLE
ONE
SHOT
14
RC
CC
RT
17

SENSE
CT
TRUTH TABLE
PHASE
H
L
OUTA
H
L
OUTB
L
H
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L6219
TYPICAL APPLICATION
STEPPER
MOTOR
VBB
1
1
3
Cc
FROM
μP
20
6
19
7
18
8
17
10
θ2
θ1
12
CT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
+
Rc
Cc
FROM
μP
16
15
VREF
14
11
VREF
VBB
RS
21
5
9
RT
22
2
4
PWM1
Rc
24
23
2
RS
PWM2

LINEAR INTEGRATED CIRCUIT
Vcc
CT
13
RT
+5V
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L6219

LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise specified)
PARAMETER
Motor Supply Voltage
RATINGS
UNIT
45
V
Peak
1.0
A
Output Current
IOUT
Continuous
750
mA
Logic Supply Voltage
VCC
7.0
V
Logic Input Voltage Range
VIN
-0.3 ~ +7.0
V
Output Emitter Voltage
VSENSE
1.5
V
Package Power Dissipation
PD
See graph
Junction Temperature
TJ
125
C
Operating Temperature
TOPR
-20~+85
C
Storage Temperature
TSTG
-40 ~ +150
C
Note 1.Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2.The device is guaranteed to meet performance specification within 0℃~+70C operating temperature range
and assured by design from -20℃~+85C.
3.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

SYMBOL
VBB
ELECTRICAL CHARACTERISTICS (TA=25C, VCC=4.75V to 5.25V, VBB=45V, TJ≤150C, VREF=5.0V)
PARAMETER
SYMBOL
Output Drivers(OUTA or OUTB)
Motor Supply Range
VBB
Output Leakage Current
ILEAK
Output Sustaining Voltage
VCE(SUS)
Output Saturation Voltage
VCE(SAT)
Clamp Diode Leakage Current
Clamp Diode Forward Voltage
Driver Supply Current
IR
VF
IBB(ON)
IBB(OFF)
TEST CONDITIONS
VOUT=VBB
VOUT=0
IOUT=±750mA,L=3.0mH
Sink Driver, IOUT=+500mA
Sink Driver, IOUT=+750mA
Source Driver, IOUT= -500mA
Source Driver, IOUT= -750mA
VR=45V
IF=750mA
Both Bridges On, No Load
Both Bridge Off
MIN
TYP
MAX
UNIT
10
45
-
<1.0
<-1.0
0.4
1.0
1.0
1.3
<1.0
1.6
20
5.0
45
50
-50
0.6
1.2
1.2
1.5
50
2.0
25
10
V
μA
μA
V
V
V
V
V
μA
V
mA
mA
2.4
1.5
9.5
13.5
25.5
-
<1.0
-3.0
10
15
30
40
10
170
0.8
20
-200
7.5
10.5
16.5
34.5
50
12
-
V
V
μA
μA
V
-
Control Logic
Input Voltage
VIN(1)
VIN(0)
Input Current
IIN(1)
Reference Voltage Range
VREF
Current Limit Threshold
(at trip point)
Total Logic Supply Current
Thermal Shutdown Temperature
VREF/VCOMPIN
ICC(ON)
ICC(OFF)
TSHDN
All Inputs
All Inputs
VIN=2.4V
VIN=0.8V
Operating
I0=I1=0.8V
I0=2.4V, I1=0.8V
I0=0.8V, I1=2.4V
I0=I1=0.8V, No Load
I0=I1=2.4V, No Load
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mA
C
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L6219

LINEAR INTEGRATED CIRCUIT
PWM CURRENT CONTROL
The L6219 dual bridge is designed to drive both windings of a bipolar stepper motor. Output current is sensed
and controlled independently in each bridge by an external sense resistor (Rs), internal comparator, and monostable
multivibrator.
When the bridge is turned on, current increases in the motor winding and it is sensed by the external sense
resistor until the sense voltage (VCOMPIN) reaches the level set at the comparator’s input :ITRIP=VREF/10Rs
The comparator then triggers the monostable which turns off the source driver of the bridge. The actual load
current peak will be slightly higher than the trip point (especially for low-inductance loads) because of the internal
logic and switching delays. This delay (td)is typically 2μs.After turn-off, the motor current decays, circulating through
the ground-clamp diode and sink transistor. The source driver’s off time (and therefore the magnitude of the current
decrease)is determined by the monostable’s external RC timing components, where tOFF=RTCT within the range of
20kΩ to 100kΩ and 100pF to 1000pF
When the source driver is re-enabled, the winding current (the sense voltage) is again allowed to rise to the
comparator’s threshold. This cycle repeats itself, maintaining the average motor winding current at the desired level.
Loads with high distributed capacitances may result in high turn-on current peaks. This peak (appearing across
Rs) will attempt to trip the comparator, resulting in erroneous current control or high-frequency oscillations. An
external RCCC time delay should be used to further delay the action of the comparator. Depending on load type,
many applications will not require these external components (SENSE connected to COMP IN).
PWM OUTPUT CURRENT WAVE FORM
LOAD CURRENT PATHS
VBB
VPHASE
IOUT+
0
ITRIP
RS
tD
tOFF
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BRIDGE ON
SOURCE OFF
ALL OFF
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L6219
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTIC

Allowable package power
dissipation in watts
2.5
2.0
R?JT=6°C/W
1.5
1.0
R?JT=55°C/W
0.5
0
25
50
75
100
Temperature, in°C
125
150
UTC assumes no responsibility for equipm ent failures that result from using products at values that
exceed, even mom entarily, rated values (such as m aximum ratings, operating condition ranges, or
other param eters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or system s where
m alfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The inform ation
presented in this docum ent does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
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