A4987SLPTR-T View Datasheet(PDF) - Allegro MicroSystems

Part Name

Description

MFG CO.

A4987SLPTR-T

DMOS Dual Full-Bridge PWM Motor Driver with Overcurrent Protection

Allegro MicroSystems 

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A4987

DMOS Dual Full-Bridge PWM Motor Driver

with Overcurrent Protection

ELECTRICAL CHARACTERISTICS1 at TA = 25°C, VBB = 35 V (unless otherwise noted)

Characteristics

Output Drivers

Load Supply Voltage Range

Logic Supply Voltage Range

Output On Resistance

Body Diode Forward Voltage

Motor Supply Current

Logic Supply Current

Control Logic

Logic Input Voltage

Logic Input Current

Logic Input Pull-down

Logic Input Hysteresis

Blank Time

Fixed Off-Time

Reference Input Voltage Range

Reference Input Current

Current Trip-Level Error3

Crossover Dead Time

Protection

Overcurrent Protection Threshold

Thermal Shutdown Temperature

Thermal Shutdown Hysteresis

VDD Undervoltage Lockout

VDD Undervoltage Hysteresis

Symbol

Test Conditions

VBB

VDD

RDS(ON)

VF

IBB

IDD

Operating

During Sleep Mode

Operating

Source Driver, IOUT = –800 mA

Sink Driver, IOUT = 800 mA

Source Diode, IF = –800 mA

Sink Diode, IF = 800 mA

fPWM < 50 kHz

Operating, outputs disabled

Sleep Mode

fPWM < 50 kHz

Outputs off

Sleep Mode

VIN(1)

VIN(0)

IIN(1)

IIN(0)

RIN02

RIN12

VHYS(IN)

tBLANK

tOFF

VREF

IREF

errI

tDT

 VIN = VDD 0.7

 VIN = VDD 0.3

As a % of VDD

OSC = VDD or GND

ROSC = 25 kΩ

VREF = 2 V, %ITripMAX = 33.3%

VREF = 2 V, %ITripMAX = 66.7%

VREF = 2 V, %ITripMAX = 100.00%

IOCPST

TTSD

TTSDHYS

VDDUVLO

VDDUVLOHYS

VDD rising

Min. Typ.2 Max. Units

8

–

35

V

0

–

35

V

3.0

–

5.5

V

–

700

900

mΩ

–

700

900

mΩ

–

–

1.3

V

–

–

1.3

V

–

–

4

mA

–

–

2

mA

–

–

10

μA

–

–

8

mA

–

–

5

mA

–

–

10

μA

 VDD 0.7

–

–

V

–

–

 VDD 0.3

V

–20

<1.0

20

μA

–20

<1.0

20

μA

–

100

–

kΩ

–

50

–

kΩ

5

11

19

%

0.7

1

1.3

μs

20

30

40

μs

23

30

37

μs

0

–

4

V

–3

0

3

μA

–

–

±15

%

–

–

±5

%

–

–

±5

%

100

475

800

ns

1.1

–

–

A

–

165

–

°C

–

15

–

°C

2.7

2.8

2.9

V

–

90

–

mV

1For input and output current specifications, negative current is defined as coming out of (sourcing) the specified device pin.

2Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions. Performance may vary for individual

units, within the specified maximum and minimum limits.

3VERR = [(VREF/8) – VSENSE] / (VREF/8).

Allegro MicroSystems, Inc.

4

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

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