A2557SB-T datasheet(4/12 Pages) ALLEGRO

Part #	A2557SB-T

Description	PROTECTED QUAD LOW-SIDE DRIVER WITH FAULT DETECTION and SLEEP MODE

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Manufacturer	ALLEGRO [Allegro MicroSystems]

Direct Link	http://www.allegromicro.com

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4 / 12 page

2557

PROTECTED QUAD DRIVER

WITH FAULT DETECTION

& SLEEP MODE

www.allegromicro.com

4

Limits

Characteristic

Symbol

Test Conditions

Min. Typ.

Max.

Units

Output Leakage Current*

ICEX

VO = 60 V, VI = 0.8 V, VOE = 2.0 V

—

30

100

µA

VO = 60 V, VI = 2.0 V, VOE = 0.8 V

—

<1.0

100

µA

Output Sustaining Voltage

VO(SUS)

IO = 100 mA, VI = VOE = 0.8 V, VCC = Open

40

—

V

Output Saturation Voltage

VO(SAT)

IO

V

m

0

2

5

6

—

A

m

0

1

=

IO

V

m

0

3

0

8

1

—

A

m

0

3

=

Over-Current Limit

IOM

5 ms PulseTest, VO

A

m

—

0

5

—

V

0

.

5

=

V

e

g

a

tl

o

V

t

u

p

n

I

IH

INn

V

—

0

.

2

E

L

B

A

N

E

r

o

VIL

INn

V

8

.

0

—

E

L

B

A

N

E

r

o

I

t

n

e

r

u

C

t

u

p

n

I

IH

INn or ENABLE, VIH

0

1

—

V

0

.

2

=

µA

IIL

INn or ENABLE, VIL

0

1

-

—

V

8

.

0

=

µA

Fault Output Leakage Current

IFLT

VFLT

5

1

0

.

4

—

V

0

6

=

µA

VFLT

0

.

2

0

.

1

<

—

V

5

=

µA

Fault Output Current

IFLT

VFLT = 5 V, Driver Output Open,

VI = 0.8 V, VOE

0

8

0

6

0

4

V

0

.

2

=

µA

Fault Output Saturation Voltage

VFLT(SAT)

IFLT = 30 µ

V

4

.

0

1

.

0

—

A

Clamp Diode Forward Voltage

VF

IF

V

7

.

1

2

.

1

—

A

m

0

5

=

IF

V

1

.

2

5

.

1

—

A

m

0

5

7

=

Clamp Diode Leakage Current

IR

VR

0

5

—

V

0

6

=

µA

t

y

a

l

e

D

n

O

-

n

r

u

T

PHL

IO = 300 mA, 50% VI to 50% VO

—

0.6

10

µs

From Sleep, IO = 300 mA, 50% VI to 50% VO

—

3.0

—

µs

IO = 300 mA, 50% VOE to 50% VO

—

1.3

10

µs

t

y

a

l

e

D

ff

O

-

n

r

u

T

PLH

IO = 300 mA, 50% VI to 50% VO

—

2.0

10

µs

IO = 300 mA, 50% VOE to 50% VO

—

1.4

10

µs

Total Supply Current

ICC

A

m

1

.

0

5

7

0

.

0

—

ff

O

s

t

u

p

t

u

O

ll

A

m

0

2

1

—

n

O

t

u

p

t

u

O

e

n

O

y

n

A

m

0

3

8

1

—

n

O

s

t

u

p

t

u

O

o

w

T

A

m

0

4

2

—

n

O

s

t

u

p

t

u

O

e

r

h

T

A

m

0

5

0

3

—

n

O

s

t

u

p

t

u

O

ll

A

T

ti

m

i

L

l

a

m

r

e

h

T

J

—

165

—

°C

ELECTRICAL CHARACTERISTICS over operating temperature range, VCC = 4.75 V to 5.25 V

Typical Data is at TA = +25°C and VCC = 5 V and is for design information only.

Negative current is defined as coming out of (sourcing) the specified terminal.

As used here, -100 is defined as greater than +10 (absolute magnitude convention) and the minimum is implicitly zero.

* Measurement includes output fault-sensing pull-down current.

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