General Description

BD63720AEFV is a bipolar low-consumption driver that

driven by PWM current. Rated power supply voltage of

the device is 36 V, and rated output current is 2.0 A.

CLK-IN driving mode is adopted for input interface, and

excitation mode is corresponding to FULL STEP mode,

HALF STEP mode (2 types) and QUARTER STEP

mode via a built-in DAC. In terms of current decay, the

FAST DECAY/SLOW DECAY ratio may be set without

any limitation, and all available modes may be

controlled in the most appropriate way. In addition, the

power supply may be driven by one single system,

which simplifies the design.

Features

Rated output current（DC）2.0A

Low ON resistance DMOS output

CLK-IN drive mode

PWM constant current (other oscillation)

Built-in spike noise cancel function (external noise

filter is unnecessary)

Full-, half (two kinds)-, quarter-step functionality

Freely timing excitation mode switch

Current decay mode switch

（linearly variable FAST/SLOW DECAY ratio）

Normal rotation & reverse rotation switching

function

Power save function

Built-in logic input pull-down resistor

Power-on reset function

Thermal shutdown circuit (TSD)

Over-current protection circuit（OCP）

Under voltage lock out circuit (UVLO)

Over voltage lock out circuit (OVLO)

Ghost Supply Prevention (protects against

malfunction when power supply is disconnected)

Adjacent pins short protection

Microminiature, ultra-thin and high heat-radiation

(exposed metal type) package

Application

PPC, multi-function printer, laser beam printer, and

ink-jet printer

Monitoring camera and WEB camera

Sewing machine

Photo printer, FAX, scanner and mini printer

Toy and robot