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DRV8845中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

DRV8845
廠商型號

DRV8845

功能描述

DRV8849: 38 V, 1.5 A Dual Stepper Driver with Integrated Current Sense, 1/256 Microstepping, STEP/DIR Interface and Smart Tune

文件大小

1.41742 Mbytes

頁面數(shù)量

35

生產(chǎn)廠商 Texas Instruments
企業(yè)簡稱

TI德州儀器

中文名稱

美國德州儀器公司官網(wǎng)

原廠標識
數(shù)據(jù)手冊

下載地址一下載地址二到原廠下載

更新時間

2024-12-24 11:01:00

DRV8845規(guī)格書詳情

1 Features

? Dual stepper motor driver

– STEP/DIR interface

– Up to 1/256 microstepping indexer

? 4.5 to 38-V Operating supply voltage range

? 900 mΩ HS + LS RDS(ON) at 24 V, 25°C

? 1.5 A full-scale, 1.1 A rms current per H-bridge

? Integrated current sense functionality

– No sense resistors required

– ±5 full-scale current accuracy

? Smart tune decay technology

? Configurable off-time PWM chopping in Smart tune

– 8-μs, 16-μs, or 32-μs

? Supports 1.8-V, 3.3-V, 5.0-V logic inputs

? Low-current sleep mode (1.3 μA)

? Protection features for each Stepper

– VM undervoltage lockout (UVLO)

– Charge pump undervoltage (CPUV)

– Overcurrent protection (OCP)

– Thermal shutdown (OTSD)

– Fault condition output (nFAULT)

2 Applications

? IP Network Camera

? Printers and scanners

? ATM and money handling machines

? Sewing machines

? Medical Imaging, Diagnostics and Equipment

? 3D Printer

3 Description

The DRV8849 is a dual stepper motor driver for

industrial and consumer applications. The device is

fully integrated with four N-channel power MOSFET

H-bridge drivers, one microstepping indexer for

each stepper, and integrated current sensing. The

DRV8849 is capable of driving up to 1.5-A full-scale

output current (dependent on PCB design).

The DRV8849 uses an internal current sense

architecture to eliminate the need for four external

power sense resistors, saving PCB area and system

cost. The device uses an internal PWM current

regulation scheme with smart tune decay mode.

Smart tune automatically adjusts for desired current

regulation, compensates for motor variation and aging

effects and reduces audible noise and vibration from

the motor.

Simple STEP/DIR interfaces allow an external

controller to manage the direction and step rate of

the stepper motors. The device can be configured

in full-step to 1/256 microstepping. A low-power

sleep mode is provided using a dedicated nSLEEP

pin. Protection features are provided for supply

undervoltage, charge pump faults, overcurrent, short

circuits, and overtemperature. Fault conditions are

indicated by one nFAULT pin for each stepper.

供應(yīng)商 型號 品牌 批號 封裝 庫存 備注 價格
TI
22+23+
MODULE
29851
絕對原裝正品全新進口深圳現(xiàn)貨
詢價
TI/德州儀器
2122+
NA
15688
全新原裝正品現(xiàn)貨,優(yōu)勢渠道可含稅,假一賠十
詢價
TI/德州儀器
23+
VQFN24
18204
原裝正品代理渠道價格優(yōu)勢
詢價
TI/德州儀器
2021+
C0603
100500
一級代理專營品牌!原裝正品,優(yōu)勢現(xiàn)貨,長期排單到貨
詢價
TI/德州儀器
24+
VQFN-24
25500
授權(quán)代理直銷,原廠原裝現(xiàn)貨,假一罰十,特價銷售
詢價
NA
23+
NA
26094
10年以上分銷經(jīng)驗原裝進口正品,做服務(wù)型企業(yè)
詢價
TI
1735+
QFN
6528
科恒偉業(yè)!只做原裝正品!假一賠十!
詢價
TI
18+
VQFN24
3000
向鴻專營原裝正品TI,深圳現(xiàn)貨
詢價
TI
24+
SMD
17900
馬達/運動/點火控制器和驅(qū)動器2A
詢價
TI/德州儀器
2020+
VQFN-24
3300
全新原裝現(xiàn)貨,一片也是批量價。
詢價