NJW4372 Datasheet, PDF (1/1 Pages) New Japan Radio – Pulse Input Stepper Motor Driver

NJW4372
Pulse Input Stepper Motor Driver
■ GENERAL DESCRIPTION
The NJW4372 is a bipolar drive stepper motor driver IC
characterized as highly efficient. The control method
used is a simple pulse train input control (STEP & DIR)
method of programming. The drive stage consists of
DMOS H bridges.
Therefore, motor drive application circuit is composed of highly
effective and low heating value. Supply / interface voltage
corresponds to the logic, 3.3V / 5.0V. NJW4372 has PWM
current control circuits, Torque set, Enable and PD functions.
The functions are easy and convenient to operate and suitable
for a wide range of applications.
■ FEATURE
▪ Supply Voltage
: 2.7V ~ 5.5V
▪ Motor Supply Voltage
: 10V ~ 38V
▪ Output Current
: 500mA / ch
▪ ON Resistance Output
: R_O = 1.65Ω ( typ. )
▪ Quiescent Current
: I_DD = 300 µA ( typ. )
▪ Pulse Input ( STEP & DIR ) Control
▪ TTL Compatible Input
▪ ENABLE / PD( Power down and Reset ) function
▪ PWM Constant Current Control Circuit
▪ Torque Control Function ( TOR )
▪ Protection Circuit
: UVLO, THD
▪ Package
: SDIP-22 / SSOP32
■ PACKAGE OUTLINE
NJW4372L
NJW4372V
■ BLOCK DIAGLAM
VDD
RESET
STEP
BIAS
POR
DIR
HSM
MO
VR
TOR1
TOR2
ENABLE
BRAKE
GND
VMM
VMM
OSC
SENSE1
OUT1A
OUT1B
VMM
VMM
VMM
VMM
OUT2A
OUT2B
SENSE2
PROTECTION
UVLO_VDD
UVLO_VMM
TSD
ALARM
　　　　　　　　　 Ver.2010/09/03