A2557KB datasheet(3/12 Pages) ALLEGRO

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2557

PROTECTED QUAD DRIVER

WITH FAULT DETECTION

& SLEEP MODE

www.allegromicro.com

Limits

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Output Leakage Current*

ICEX

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

—

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

—

Output Saturation Voltage

VO(SAT)

IO = 100 mA—

200

IO = 300 mA—

180

300

Over-Current Limit

IOM

5 ms PulseTest, VO = 5.0 V

—

500

—

Input Voltage

VIH

INn or ENABLE

2.0

—

VIL

INn or ENABLE

—

0.8

Input Current

IIH

INn or ENABLE, VIH = 2.0 V

—

µA

IIL

INn or ENABLE, VIL = 0.8 V

—

-10

µA

Fault Output Leakage Current

IFLT

VFLT = 60 V

—

4.0

µA

VFLT = 5 V

—

<1.0

2.0

µA

Fault Output Current

IFLT

VFLT = 5 V, Driver Output Open,

VI = 0.8 V, VOE = 2.0 V

µA

Fault Output Saturation Voltage

VFLT(SAT)

IFLT = 30

µA—

0.1

0.4

Clamp Diode Forward Voltage

IF = 500 mA—

1.2

1.7

IF = 750 mA—

1.5

2.1

Clamp Diode Leakage Current

VR = 60 V

—

µA

Turn-On Delay

tPHL

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

—

0.6

µs

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

—

3.0

—

µs

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

—

1.3

µs

Turn-Off Delay

tPLH

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

—

2.0

µs

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

—

1.4

µs

Total Supply Current

ICC

All Outputs Off

—

0.075

0.1

Any One Output On

—

Two Outputs On

—

Three Outputs On

—

All Outputs On

—

Thermal Limit

—

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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