L297D STMicroelectronics, L297D Datasheet

IC STEPPER MOTOR CTRLR 20-SOIC

L297D

Manufacturer Part Number
L297D
Description
IC STEPPER MOTOR CTRLR 20-SOIC
Manufacturer
STMicroelectronics
Type
Stepper Motor Controller/Driverr
Datasheets

Specifications of L297D

Applications
Stepper Motor Controller
Number Of Outputs
4
Voltage - Supply
4.75 V ~ 7 V
Operating Temperature
-40°C ~ 150°C
Mounting Type
Surface Mount
Package / Case
20-SOIC (7.5mm Width)
Product
Stepper Motor Controllers / Drivers
Operating Supply Voltage
7 V
Supply Current
80 mA
Mounting Style
SMD/SMT
Current, Input, High Level
10 uA (Max.)
Current, Input, Low Level
100 uA (Typ.)
Number Of Pins
20
Package Type
SO20
Power Dissipation
1 W (Max.)
Temperature, Operating, Maximum
150 °C
Temperature, Operating, Minimum
-40 °C
Voltage, Input
7 V (Max.)
Voltage, Input, High Level
2.0 V (Min.)
Voltage, Input, Low Level
0.6 V (Max.)
Voltage, Output, High Level
3.9 V (Min.)
Voltage, Output, Low Level
0.4 V (Max.)
Voltage, Supply
7 V (Max.)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output
-
Voltage - Load
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
497-1393-5
497-1393-5
497-3623
497-3623-5

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ABSOLUTE MAXIMUM RATINGS
TWO PHASE BIPOLAR STEPPER MOTOR CONTROL CIRCUIT
DESCRIPTION
The L297 Stepper Motor Controller IC generates
four phase drive signals for two phase bipolar and
four phase unipolar step motors in microcomputer-
controlled applications. The motor can be driven in
half step, normal and wawe drive modes and on-
chip PWM chopper circuits permit switch-mode
control of the current in the windings. A feature of
December 2001
Symbol
T
NORMAL/WAVE DRIVE
HALF/FULL STEP MODES
CLOCKWISE/ANTICLOCKWISE DIRECTION
SWITCHMODE LOAD CURRENT REGULA-
TION
PROGRAMMABLE LOAD CURRENT
FEW EXTERNAL COMPONENTS
RESET INPUT & HOME OUTPUT
ENABLE INPUT
stg
P
V
V
tot
, T
s
i
j
Supply voltage
Input signals
Total power dissipation (T
Storage and junction temperature
®
amb
= 70 C)
Parameter
STEPPER MOTOR CONTROLLERS
this device is that it requires only clock, direction
and mode input signals. Since the phase are gen-
erated internally the burden on the microprocessor,
and the programmer, is greatly reduced. Mounted
in DIP20 and SO20 packages, the L297 can be
used with monolithic bridge drives such as the
L298N or L293E, or with discrete transistors and
darlingtons.
ORDERING NUMBERS : L297/1 (DIP20)
DIP20
-40 to + 150
L297D (SO20)
Value
10
7
1
SO20
L297
Unit
W
V
V
C
1/11

Related parts for L297D

L297D Summary of contents

Page 1

... Mounted in DIP20 and SO20 packages, the L297 can be used with monolithic bridge drives such as the L298N or L293E, or with discrete transistors and darlingtons. Parameter = 70 C) amb L297 DIP20 SO20 L297D (SO20) Value - 150 Unit 1/11 ...

Page 2

... L297 PIN CONNECTION (Top view) BLOCK DIAGRAM (L297/1 - L297D) 2/11 L297/1 L297D ...

Page 3

... PIN FUNCTIONS - L297/1 - L297D N NAME 1 SYNC 2 GND 3 HOME INH1 INH2 ENABLE 11 CONTROL SENS 2 14 SENS ref 16 OSC 17 CW/CCW 18 CLOCK FUNCTION Output of the on-chip chopper oscillator. The SYNC connections The SYNC connections of all L297s to be synchronized are connected together and the oscillator components are omitted on all but one ...

Page 4

... L297 PIN FUNCTIONS - L297/1 - L297D (continued) N NAME 19 HALF/FULL 20 RESET THERMAL DATA Symbol R Thermal resistance junction-ambient th-j-amb CIRCUIT OPERATION The L297 is intended for use with a dual bridge driver, quad darlington array or discrete power devices in step motor driving applications. It re- ceives step clock, direction and mode signals from ...

Page 5

MOTOR DRIVING PHASE SEQUENCES The L297’s translator generates phase sequences for normal drive, wave drive and half step modes. The state sequences and output waveforms for these three modes are shown below. In all cases the translator advances on the ...

Page 6

L297 MOTOR DRIVING PHASE SEQUENCES (continued) WAVE DRIVE MODE Wave drive mode (also called "one-phase-on" drive) is selected by a low level on the HALF/FULL input when the translator even numbered state ( 8). ...

Page 7

ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter I Leakage current (pin 3) leak V Saturation voltage (pin 3) sat V Comparators offset voltage off (pins 13, 14, 15) I Comparator bias current o (pins 13, 14, 15) V Input reference voltage (pin ...

Page 8

L297 APPLICATION INFORMATION TWO PHASE BIPOLAR STEPPER MOTOR CONTROL CIRCUIT This circuit drives bipolar stepper motors with winding currents up to 2A. The diodes are fast 2A types. Figure 2. Figure 3 : Synchronising L297s 8/11 ...

Page 9

DIM. MIN. TYP. MAX. MIN. a1 0.254 0.010 B 1.39 1.65 0.055 b 0.45 b1 0.25 D 25.4 E 8.5 e 2.54 e3 22.86 F 7.1 I 3.93 L 3.3 Z 1.34 inch MECHANICAL DATA TYP. MAX. 0.065 0.018 ...

Page 10

L297 mm DIM. MIN. TYP. MAX. A 2.35 2.65 0.093 A1 0.1 0.3 0.004 B 0.33 0.51 0.013 C 0.23 0.32 0.009 D 12.6 13 0.496 E 7.4 7.6 0.291 e 1. 10.65 0.394 h 0.25 0.75 0.010 ...

Page 11

... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics ...

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