NJM3777E3 데이터 시트보기 (PDF) - Japan Radio Corporation

부품명

상세내역

제조사

NJM3777E3

DUAL STEPPER MOTOR DRIVER

Japan Radio Corporation  

NJM3777

DUAL STEPPER MOTOR DRIVER

s GENERAL DESCRIPTION

The NJM3777 is a switch-mode (chopper), constant-current

driver with two channels: one for each winding of a two-phase

stepper motor. The NJM3777 is equipped with a Disable input

to simplify half-stepping operation. The NJM3777 contains a

clock oscillator, which is common for both driver channels, a

set of comparators and flip-flops implementing the switching

control, and two output H-bridges, including recirculation

diodes. Voltage supply requirements are + 5 V for logic and +

10 to + 45 V for the motor. Maximum output current is 900mA

per channel.

s PACKAGE OUTLINE

NJM3777E3

s FEATURES

• Dual chopper driver

• 900 mA continuous output current per channel

• Digital filter on chip eliminates external filtering components

• Package EMP24(Batwing)

s BLOCK DIAGRAM

Phase1

Dis1 VR1

C1

NJM3777

VCC

VCC

–

+

E1

RQ

S

Logic

+

–

RC

Logic

+

SQ

R

–

Phase 2

Dis 2 VR2

C2

GND

E2

Figure 1. Block diagram

M A1

M B1

V MM1

VMM2

M B2

M A2

Share Link: