A4953 View Datasheet(PDF) - Allegro MicroSystems

Part Name

Description

MFG CO.

A4953

Full-Bridge DMOS PWM Motor Drivers

Allegro MicroSystems 

1 2 3 4 5 6 7 8 9 10

A4952 and

A4953

Full-Bridge DMOS PWM Motor Drivers

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 I/O Inputs

Vf

Source diode, If = –1.5 A

Sink diode, If = 1.5 A

Logic Input Voltage Range

Logic Input Pull-Down Resistance

Logic Input Current

Input Hysteresis

Logic I/O Inputs (A4952 only)

VIN(1) INx pins

VIN(0) INx pins

VIN(STANDBY) INx pins, Low Power Standby mode

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

IIN(1)

INx pins, VIN = 2.0 V

IIN(0) INx pins, VIN = 0.8 V

VHYS

Retry Input Voltage

Retry Overcurrent Protection Pullup

Voltage

VRTRY RTRY pin = valid

VRTRY(OC) RTRY pin = open

Retry Short Circuit Current

Fault Output Voltage

Fault Output Leakage Current

Timing

IRTRY

VRST

ILK

RTRY pin = GND

FLTn pin, IOUT = 1 mA

FLTn pin, no fault, pull-up to 5 V

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 < 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

1.0

Ω

–

1.3

1.6

Ω

–

10

–

mA

–

–

10

μA

–

–

1.5

V

–

–

1.5

V

2.0

–

–

V

–

–

0.8

V

–

–

0.4

V

–

50

–

kΩ

–

40

100

μA

–

16

40

μA

–

250

550

mV

–

–

200

mV

–

3

–

V

–

10

–

μA

–

–

0.5

V

–

–

1

μA

50

400

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

–

20

–

°C

Allegro MicroSystems, LLC

3

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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