A4954 View Datasheet(PDF) - Allegro MicroSystems

Part Name

Description

Manufacturer

A4954

Dual Full-Bridge DMOS PWM Motor Driver

Allegro MicroSystems 

A4954

Dual Full-Bridge DMOS

PWM Motor Driver

ELECTRICAL CHARACTERISTICS Valid at TJ = 25°C, unless otherwise specified

Characteristics

Symbol

Test Conditions

General

Load Supply Voltage Range

RDS(on) Sink + Source Total

Load Supply Current

VBB

RDS(on)

IBB

IOUT = |1.5 A|, TJ = 25°C

IOUT = |1.5 A|, TJ = 125°C

fPWM < 30 kHz

Low Power Standby mode

Body Diode Forward Voltage

Logic Inputs

Vf

Source diode, If = –1.5 A

Sink diode, If = 1.5 A

Logic Input Voltage Range

Logic Input Current

Logic Input Pull-Down Resistance

Input Hysteresis

Timing

VIN(1)

VIN(0)

VIN(STANDBY) Low Power Standby mode

IIN(1)

VIN = 2.0 V

IIN(0)

VIN = 0.8 V

RRR LOGIC(PD) VIN = 0 V = IN1 = IN2 = IN3 = IN4

VHYS

Crossover Delay

VREF Input Voltage Range

Current Gain

Blank Time

Constant Off-time

Standby Timer

Power-Up Delay

Protection Circuits

tCOD

VREF

AV

tBLANK

toff

tst

tpu

VREF / ISS , VREF = 5 V

VREF / ISS , VREF = 2.5 V

VREF / ISS , VREF = 1 V

IN1 = IN2 = IN3 = IN4 < VIN(STANDBY)

UVLO Enable Threshold

UVLO Hysteresis

Thermal Shutdown Temperature

Thermal Shutdown Hysteresis

VBBUVLO VBB increasing

VBBUVLOhys

TJTSD Temperature increasing

TTSDhys Recovery = TJTSD – TTSDhys

Min.

Typ.

Max.

Unit

8

–

40

V

–

0.8

1.12

Ω

–

1.28

1.8

Ω

–

10

–

mA

–

–

10

μA

–

–

1.5

V

–

–

1.5

V

2.0

–

–

V

–

–

0.8

V

–

–

0.4

V

–

40

100

μA

–

16

40

μA

–

50

–

kΩ

–

250

550

mV

50

–

500

ns

0

–

5

V

9.5

–

10.5

V/V

9.0

–

10.0

V/V

8.0

–

10.0

V/V

2

3

4

μs

16

25

34

μs

–

1

1.5

ms

–

–

30

μs

7

7.5

7.95

V

–

500

–

mV

–

160

–

°C

–

15

–

°C

Allegro MicroSystems, Inc.

3

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

Share Link: