TB9120AFTAG中文資料東芝數(shù)據(jù)手冊PDF規(guī)格書

Bipolar stepping motor driver with a clock input interface

Overview

TB9120AFTAG is a two-phase bipolar stepping motor driver

with a clock input interface and a PWM constant-current

control system. It can be used for a small stepping motor

in a wide range of consumer and industrial applications.

Applications

Small stepping motors for consumer and industrial

applications such as home appliances

Features

? A two-phase bipolar stepping motor can be driven with a single chip.

? Adoption of PWM constant-current control

? Built-in a mixed decay mode

? Excitation mode selectable: full, half, quarter, 1/8, 1/16, and 1/32 step

? On-resistance of power MOSFETs: Ron(H+L)=0.8Ω(typ.)

? Input power supply voltage(VBAT): 40V(max)

? Maximum output driving current: Overcurrent detection value, 2.0A(typ.)

? Internal voltage 5V(VccOUT)

? Anomaly detection functions: Over temperature detection, overcurrent detection, load open

detection and low voltage detection

? DIAG output: Over temperature detection, overcurrent detection and load open detection

? Stall detection function and flag output function if detected

? Standby function

? Operating power supply voltage range: VBAT(opr.)=7V to 18V. Only some of the functions are

guaranteed in 4.5V to 7V.

? Maximum clock input frequency: fCLK(max)＝100kHz

? Operating temperature: -40 to 85°C

? Package: VQFN28(0.65)