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PDF NJW4350 Data sheet ( Hoja de datos )
| Número de pieza | NJW4350 | |
| Descripción | Stepper Motor / DIP16 / EMP16-E2 | |
| Fabricantes | JRC | |
| Logotipo |  |
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NJW4350
UNIPOLAR STEPPER MOTOR DRIVER
♦ GENERAL DESCRIPTION
♦ PACKAGE OUTLINE
The NJW4350 is a high efficiency DMOS unipolar
stepper motor driver IC.
Low Ron DMOS driver realizes high power efficiency and
low heat generation of a stepper motor application.
The motor can be controlled by step and direction pulse
input which makes the programming task of a micro
controller simple and easy.
Enhanced control feature, Motor Origin output, INH and
NJW4350D
RESET, make the NJW4350 applicable for a wide range of
stepper motor applications.
NJW4350E2
♦ FEATURES
• Wide Voltage Range
5 to 50V
• Low RON=0.9Ω typ.@Io=±500mA(U&L)
• STEP & DIR input Operation
• Half / Full Step Operation
• RESET Function
• Output Power Save Function (INH)
• Motor Origin Monitor Output (MO)
• Thermal Shutdown Circuit
• BCD Process Technology
• Package Outline DIP16, EMP16
♦ PIN CONNECTION
1 16 1. PB1
2 15 2. PB2
3 14 3. PGND
4 13 4. PA1
5. PA2
5 12 6. DIR
6 11 7. STEP
7 10 8. NC
89
( DIP16 / EMP16 )
16. VDD
15. MO
14. SGND
13. NC
12. RESET
11. INH
10. HSM
9. NC
Fig.1 Pin Configuration
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1 page  
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VM
+ 5V
C≥- 10ƒΚF
NJW4350
R1 R2
OPTIONAL SENSOR
MO
VDD
CMOS
IO Device
STEP
CW/CCW
HALF/FULL
STEP
DIR
HSM
RESET
NORMAL/INHBIT
GND
RESET
INH
GND(VDD)
NJW4350
SGND
PB2
PB1
PA1
PA2
PGND
MOTOR
D1-D4
11DF2or31DF2
Nihon Inter Ele.
Fig.4 Application Circuit
GND(VMM)
♦Function description
The NJW4350 is a high-performance low-voltage driver system for driving stepping motors with unipolar
winding.
Employing a general-purpose STEP&DIR motion controller, it can easily control a stepping motor when
combined with a pulse generator.
The phase output is as high as 55 V max. This prevents the phase output voltage margin of the motor from
being exceeded, which is a common problem with unipolar winding systems and also simplifies the design of
power control circuits during phase turn off.
♦Logic input
All inputs are LS-TT compatible. When the logic input is open, the circuit recognizes any open logic inputs as H
level. The NJW4350 has built-in phase logic for optimum control of the stepping motor.
• STEP – Stepping pulse
The built-in phase logic sequencer goes UP on every negative edge of the STEP signal (pulse). In full step
mode, the pulse turns the stepping motor at the basic step angle. In half step mode, two pulses are required to
turn the motor at the basic step angle.
The DIR (direction) signal and HSM (half/full mode) are latched to the STEP negative edge and must
therefore be established before the start of the negative edge. Note the setup time ts in Figure 3.
• DIR – direction
The DIR signal determines the step direction. The direction of the stepping motor depends on how the
NJW4350 is connected to the motor. Although DIR can be modified this should be avoided since a misstep of
1 pulse increment may occur if it is set simultaneous with the negative edge. See the timing chart in Figure 3.
• HSM – half/full step mode switching
This signal determines whether the stepping motor turns at half step or full step mode. The built-in phase
logic is set to the half step mode when HSM is low level. Although HSM can be modified this should be
avoided since a misstep of 1 pulse increment may occur if it is set simultaneous with the negative edge. See
the timing chart in Figure 3.
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5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet NJW4350.PDF ] | |
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