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A3901EJ

Dual Full Bridge Low Voltage Motor Driver

Allegro MicroSystems 

A3901

Dual Full Bridge Low Voltage Motor Driver

ELECTRICAL CHARACTERISTICS at TA =25°C, and VBB = 2.5 to 5.5 V, unless noted otherwise

Characteristics

Symbol

Test Conditions

Output On Resistance

Clamp Diode

RDS(on)

Source driver, VBB = 3 V, IOUT = 300 mA

Source driver, VBB = 5 V, IOUT = 300 mA

Sink driver, VBB = 3 V, IOUT = 300 mA

Sink driver, VBB = 5 V, IOUT = 300 mA

I = 300 mA

All outputs PWMed at 20 kHz

Motor Supply Current

Logic Input Voltage

IBB

VIN(1)

Sleep mode, VBB= 3 V

Sleep mode, VBB= 5 V

VIN(0)

Logic Input Current

Input Voltage Hysteresis

IIN(1)

IIN(0)

Vhys

VIN = 2.0 V

VIN = 0.5 V

Propagation Delay

Crossover Delay

Thermal Shut Down Temperature

Thermal Shut Down Hysteresis

tpd(on)

tpd(off)

tCOD

TJ

TJhys

Input Low to Sink On, Input High to Source On

Input High to Sink Off, Input Low to Source Off

Min.

–

–

–

–

–

–

–

–

VBB/2

–

Typ.

1.8

1.2

1.2

0.8

–

0.6

–

<50

–

–

Max.

2.1

1.4

1.4

1.0

1.5

–

100

500

–

Units

Ω

Ω

Ω

Ω

V

mA

nA

nA

V

0.5 V

– <100 500 nA

– <–100 –500 nA

– 150 – mV

– 130 –

ns

–

50

–

ns

–

80

–

ns

– 150 –

°C

–

10

–

°C

THERMAL CHARACTERISTICS

Characteristics

Symbol

Test Conditions

Package Thermal Resistance*

RθJA

Measured on 4-layer board based on JEDEC

standard

Measured on 2-layer board with copper limited to

solder pads and 0.88 in2. of copper on each side

*Additional thermal information is available on the Allegro Web site.

Rating

45

65

Unit

°C/W

°C/W

Allegro MicroSystems, Inc.

4

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

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