特性 Features

●The following motor combinations can be used (see p. 16-20 for pin locations)

Stepper DC Large DC Small

DC (L) DC (S)

1 dual axis --- ---

2 single axis single axis ---

3 single axis --- dual axis

4 --- single axis dual axis

5 --- dual axis ---

Note: Hereafter, DC Large will be referenced as DC (L) and DC Small will be referenced as DC (S).

● Output Current：Stepping Motor 1.0A (MAX) (single axis drive)

DC Motor DC Large DC Small

Varistor peak 8A (500ns) 4A (500ns)

For initial torque 3A (100ms) 2.5A (100ms)

Stationary current 0.8A 0.8A

The large current standard is achieved by shorting a small current H-Bridge outside two ICs. In addition, if the thermal setting is

designed to be within the proscribed thermal range, the initial torque current can be used as the normal operating current.

● It is possible to supply voltage to the outside by internalizing a step-down 1.5V to 5.0V variable DC-DC converter.

● A Reset function has been added making it possible to output a reset signal to the outside.

●Monolithic BiCD IC whose motor driver output DMOS is capable of achieving a low ON resistance of Ron = 0.6Ω

(＠Tj = 25℃, 0.6A: Typ.)

●Two sets of internal serial input type 16 bit shift registers and 16 bit latches.

●The motor driver is capable of driving stepping motors using a 4-bit microstep.

● Equipped protection circuits: DC-DC converter overcurrent/increased voltage protection, motor overcurrent protection and total IC

overtemperature protection.

In addition, equipped with Power On Reset circuit for initializing the IC when the power is turned on and off.

● Package: 36-pin power flat package (HSOP36-P-450-0.65)

● Motor maximum output pressure: 37 V

●On-chip Mixed Decay Mode enables specification of four-stage attenuation ratio.

●Chopping frequency can be set by external oscillator. High-speed chopping is possible at 100 kHz or higher.

Note: When using the IC, be very careful in regard to thermal conditions.