DRV8889-Q1_V02 datasheet(6/88 Pages) TI

部品番号	DRV8889-Q1

部品情報	DRV8889-Q1, DRV8889A-Q1 Automotive Stepper Driver with Integrated Current Sense, 1/256 Micro-Stepping, and Stall Detection

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6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)1

MIN

MAX

UNIT

VVM

Supply voltage range for normal (DC) operation

4.5

45

V

VI

Logic level input voltage

0

5.5

V

VSDO

SDO buffer supply voltage

2.9

5.5

V

VVREF

VREF voltage

0.05

3.3

V

ƒSTEP

Applied STEP signal (STEP)

0

100 (2)

kHz

IFS

Motor full-scale current (xOUTx)

0

1.5 (3)

A

Irms

Motor RMS current (xOUTx)

0

1.1 (3)

A

TA

Operating ambient temperature

–40

125

°C

TJ

Operating junction temperature

–40

150

°C

1. Device is functional, however, deviations of the specified electrical characteristics are possible

2. STEP input can operate up to 500 kHz, but system bandwidth is limited by the motor load

3. Power dissipation and thermal limits must be observed

6.4 Thermal Information

THERMAL METRIC 1

PWP (HTSSOP)

RGE (VQFN)

UNIT

24 PINS

RθJA

Junction-to-ambient thermal resistance

30.9

40.7

°C/W

RθJC(top)

Junction-to-case (top) thermal resistance

25.2

31.1

°C/W

RθJB

Junction-to-board thermal resistance

11.3

17.9

°C/W

ψJT

Junction-to-top characterization parameter

0.4

0.6

°C/W

ψJB

Junction-to-board characterization parameter

11.3

17.8

°C/W

RθJC(bot)

Junction-to-case (bottom) thermal resistance

3.1

4.3

°C/W

1. For more information about traditional and new thermalmetrics, see the Semiconductor and IC Package

Thermal Metrics application report.

DRV8889-Q1

SLVSEE9C – APRIL 2020 – REVISED AUGUST 2020

www.ti.com

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