DRV8886AT datasheet(7/40 Pages) TI1

Part #	DRV8886AT

Description	2-A Stepper Motor Driver With Integrated Current Sense and AutoTune Technology

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DRV8886AT

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SLVSDO1 – JANUARY 2017

Product Folder Links: DRV8886AT

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Electrical Characteristics (continued)

at TA = -40 to 125°C, VVM = 8 to 37 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

MOTOR DRIVER OUTPUTS (AOUT1, AOUT2, BOUT1, BOUT2)

RDS(ON)

High-side FET on resistance

VM = 24 V, I = 1.4 A, TA = 25°C

290

346

m

Ω

RDS(ON)

Low-side FET on resistance

VM = 24 V, I = 1.4 A, TA = 25°C

260

320

m

Ω

tRISE

(1)

Output rise time

100

ns

tFALL

(1)

Output fall time

100

ns

tDEAD

(1)

Output dead time

200

ns

Vd

(1)

Body diode forward voltage

IOUT = 0.5 A

0.7

1

V

PWM CURRENT CONTROL (RREF)

ARREF

RREF transimpedance gain

28.1

30

31.9

kA

Ω

VRREF

RREF voltage

RREF = 18 to 132 k

Ω

1.18

1.232

1.28

V

tOFF

PWM off-time

20

μs

CRREF

Equivalent capacitance on

RREF

10

pF

tBLANK

PWM blanking time

IRREF = 2.0 A, 63% to 100% current

setting

1.5

µs

IRREF = 2.0 A, 0% to 63% current

setting

1

ΔITRIP

Current trip accuracy

IRREF = 1.5 A, 10% to 20% current

setting, 1% reference resistor

–15%

15%

IRREF = 1.5 A, 20% to 63% current

setting, 1% reference resistor

–10%

10%

IRREF = 1.5 A, 71% to 100% current

setting, 1% reference resistor

–6.25%

6.25%

PROTECTION CIRCUITS

VUVLO

VM UVLO

VM falling, UVLO report

7

7.8

V

VM rising, UVLO recovery

7.2

8

VUVLO,HYS

Undervoltage hysteresis

Rising to falling threshold

200

mV

VCPUV

Charge pump undervoltage

VCP falling; CPUV report

VM + 2

V

IOCP

Overcurrent protection trip

level

Current through any FET

3

A

tOCP

(1)

Overcurrent deglitch time

1.3

1.9

2.8

μs

tRETRY

Overcurrent retry time

1

1.6

ms

TTSD

(1)

Thermal shutdown

temperature

Die temperature TJ

150

°C

THYS

(1)

Thermal shutdown hysteresis

Die temperature TJ

20

°C

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