IC Phoenix
 
Home ›  LL3 > L6219R,STEPPER MOTOR DRIVER
L6219R Fast Delivery,Good Price
Part Number:
If you need More Quantity or Better Price,Welcom Any inquiry.
We available via phone +865332716050 Email
Partno Mfg Dc Qty AvailableDescript
L6219RSTN/a3119avaiSTEPPER MOTOR DRIVER


L6219R ,STEPPER MOTOR DRIVERapplications.6;19 GROUND See pins 7;187;18 GROUND Ground Connection. With pins 6 and 19 also conduc ..
L6219R013TR ,STEPPER MOTOR DRIVERapplications.6;19 GROUND See pins 7;187;18 GROUND Ground Connection. With pins 6 and 19 also conduc ..
L6220 ,QUAD DARLINGTON SWITCHESL6220L6220NQUAD DARLINGTON SWITCHES. TWO NON INVERTING + TWO INVERTING IN-PUTS WITH INHIBIT. OUTPUT ..
L6221 ,QUAD DARLINGTON SWITCHL6221AS L6221ADL6221N®QUAD DARLINGTON SWITCH. FOUR NON INVERTING INPUTS WITH ENABLE.OUTPUT VOLTAGE ..
L6221A ,QUAD DARLINGTON SWITCHblock diagram)Name FunctionIN 1 Input to Driver 1IN 2 Input to Driver 2OUT 1 Output of Driver 1OUT ..
L6221AD ,QUAD DARLINGTON SWITCHL6221A L6221ADL6221N®QUAD DARLINGTON SWITCH. FOUR NON INVERTING INPUTS WITH ENABLE.OUTPUT VOLTAGE U ..
LC321664AJ ,1 MEG (65536 words X 16 bits) DRAM Fast Page Mode, Byte WriteFeatures• 65536-word · 16-bit configurationSANYO:SOJ40• Single 5 V ±10% power supply• All input and ..
LC321664AJ-80 ,1MEG (65536words x 16bit) DRAM fast page mode, byte writeAbsolute Maximum RatingsParameter Symbol Ratings Unit NoteMaximum supply voltage V max –1.0 to +7.0 ..
LC321664AM-80 ,1MEG (65536words x 16bit) DRAM fast page mode, byte writeFeatures• 65536-word · 16-bit configurationSANYO:SOJ40• Single 5 V ±10% power supply• All input and ..
LC321664BJ ,1 MEG (65536 words X 16 bits) DRAM Fast Page Mode, Byte WriteFeatures. 65536 words M 16 bits configuration,. Single 5 V , 10% power supply.. All input and outpu ..
LC321664BJ-70 ,1 MEG (65536 words x 16 bit) DRAM, fast page mode, byte writeFeatures. 65536 words M 16 bits configuration,. Single 5 V , 10% power supply.. All input and outpu ..
LC321664BJ-80 ,1 MEG (65536 words x 16 bit) DRAM fast page mode, byte writeOrdering number : EN5082AOve rviewThe LC321664BJ, BM, BT is a CMOS dynamic RAMoperating on a single ..


L6219R
STEPPER MOTOR DRIVER
1/10
L6219R

January 2003 ABLE TO DRIVE BOTH WINDINGS OF
BIPOLAR STEPPER MOTOR OUTPUT CURRENT UP TO 500mA EACH
WINDING WIDE VOLTAGE RANGE 4.5V TO 10V HALF-STEP, FULL-STEP AND MICROSTEPP-
ING MODE BUILT-IN PROTECTION DIODES INTERNAL PWM CURRENT CONTROL LOW OUTPUT SATURATION VOLTAGE DESIGNED FOR UNSTABILIZED MOTOR
SUPPLY VOLTAGE INTERNAL THERMAL SHUTDOWN
DESCRIPTION

The L6219R is a bipolar monolithic integrated circuits
intended to control and drive both winding of a bipolar
stepper motor or bidirectionally control two DC mo-
tors.The L6219R with a few external components
form a complete control and drive circuit for LS-TTL
or microprocessor controlled stepper motor sys-
tem.The power stage is a dual full bridge capable of
sustaining 10V and including four diodes for current
recirculation.A cross conduction protection is provid-
ed to avoid simultaneous cross conduction during
switching current direction.An internal pulse-width-
modulation (PWM) controls the output current to
500mA with peak start-up current up to 1A.
Wide range of current control from 500mA (each
bridge) is permitted by means of two logic inputs and
an external voltage reference. A phase input to each
bridge determines the load current direction.A ther-
mal protection circuitry disables the outputs if the
chip temperature exceeds safe operating limits.
STEPPER MOTOR DRIVER
BLOCK DIAGRAM
L6219R
2/10
PIN CONNECTION (Top view)
PIN DESCRIPTION

Note: ESD on GND, VS, VSS, OUT 1A and OUT 2A is guaranteed up to 1.5KV (Human Body Model, 1500W, 100pF).
3/10
L6219R
ABSOLUTE MAXIMUM RATINGS
THERMAL DATA

(*) With minimized copper area.
ELECTRICAL CHARACTERISTICS

(Tj = 25°C, VS = 4.5V, VSS = 4.75V to 5.25V, VREF = 2V; unless otherwise specified) See fig. 3
L6219R
4/10
*) ICEX is the sum of the leakage of the power switch and recirculation diode.
Figure 1.
ELECTRICAL CHARACTERISTICS (continued)

(Tj = 25°C, VS = 4.5V, VSS = 4.75V to 5.25V, VREF = 2V; unless otherwise specified) See fig. 3
5/10
L6219R
FUNCTIONAL DESCRIPTION

The circuit is intended to drive both windings of a bipolar stepper motor.
The peak current control is generated through switch mode regulation.There is a choice of three different current
levels with the two logic inputs I01 - I11 for winding 1 and I02 - I12 for winding 2.
The current can also be switched off completely
Input Logic (I0 and I1)

The current level in the motor winding is selected with these inputs. (See fig. 2)
If any of the logic inputs is left open, the circuit will treat it has a high level input.
Phase

This input determines the direction of current flow in the windings, depending on the motor connections. The
signal is fed through a Schmidt-trigger for noise immunity, and through a time delay in order to guarantee that
no short-circuit occurs in the output stage during phase-shift.High level on the PHASE input causes the motor
current flow from Out A through the winding to Out B
Current Sensor

This part contains a current sensing resistor (RS), a low pass filter (RC, CC) and three comparators.Only one
comparator is active at a time. It is activated by the input logic according to the current level chosen with signals
Io and I1.The motor current flows through the sensing resistor RS.When the current has increased so that the
voltage across RS becomes higher than the reference voltage on the other comparator input, the comparator
goes high, which triggers the pulse generator.
The max peak current Imax can be defined by:
See figures 4, 5 and 6 for maximum allowable output current and reference voltage versus Vs supply.
Single-pulse Generator

The pulse generator is a monostable triggered on the positive going edge of the comparator output.The
monostable output is high during the pulse time, toff , which is determined by the time components Rt and Ct.
toff = 1.1 · RtCt
The single pulse switches off the power feed to the motor winding, causing the winding current to decrease dur-
ing toff.If a new trigger signal should occur during toff, it is ignored.
Output Stage

The output stage contains four Darlington transistors (source drivers) four saturated transistors (sink drivers)
and eight diodes, connected in two H bridge. maxref
10Rs
--------------=
L6219R
6/10
Figure 2. Principle Operating Sequence

The source transistors are used to switch the power supplied to the motor winding, thus driving a constant cur-
rent through the winding.It should be noted however, that is not permitted to short circuit the outputs.
Internal circuitry is added in order to increase the accuracy of the motor current particularly with low current lev-
els.
VS, VSS, VRef

The circuit will stand any order of turn-on or turn-off the supply voltages VS and VSS. Normal dV/dt values are
then assumed.
Preferably, VRef should be tracking VSS during power-on and power-off if VS is established.
APPLICATION INFORMATIONS (Note 1)

Some stepper motors are not designed for contin-uous operation at maximum current. As the circuit drives a
constant current through the motor, its temperature might increase exceedingly both at low and high speed op-
eration.Also, some stepper motors have such high core losses that they are not suited for switch mode current
regulation.
Unused inputs should be connected to proper voltage levels in order to get the highest noise immunity.
As the circuit operates with switch mode current regulation, interference generation problems might arise in
some applications. A good measure might then be to decouple the circuit with a 100nF capacitor, located near
ic,good price


TEL:86-533-2716050      FAX:86-533-2716790
   

©2020 IC PHOENIX CO.,LIMITED