A3951SW datasheet(3/12 Pages) ALLEGRO

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3951

FULL-BRIDGE

PWM MOTOR DRIVER

www.allegromicro.com

Dwg. PP-058-1

Continued next page …

A3951SW

ELECTRICAL CHARACTERISTICS at TA = +25

°C, V

BB = 50 V, VCC = 5.0 V,

VREF = 2.0 V, VSENSE = 0 V, RC = 20 k

Ω/1000 pF to Ground (unless noted otherwise).

Limits

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Output Drivers

Load Supply Voltage Range

VBB

Operating, IOUT =

±2.0 A, L = 3 mH

VCC

–

Output Leakage Current

ICEX

VOUT = VBB

–

<1.0

µA

VOUT = 0 V

–

<-1.0

-50

µA

Output Saturation Voltage

VCE(SAT)

Source driver, IOUT = -0.5 A

–

0.9

1.2

Source driver, IOUT = -1.0 A

–

1.0

1.4

Source driver, IOUT = -2.0 A

–

1.2

1.8

Sink driver, IOUT = +0.5 A

–

0.9

1.2

Sink driver, IOUT = +1.0 A

–

1.0

1.4

Sink driver, IOUT = +2.0 A

–

1.3

1.8

Clamp Diode Forward Voltage

IF = 0.5 A

–

1.0

1.4

(Source or Sink)

IF = 1.0 A

–

1.1

1.6

IF = 2.0 A

–

1.4

2.0

Load Supply Current

IBB(ON)

VENABLE = 0.8 V, VREF = 2.0 V

–

2.9

6.0

(No Load)

IBB(OFF)

VENABLE = VREF = 2.0 V

–

3.1

6.5

IBB(BRAKE)

VBRAKE = 0.8 V

–

3.1

6.5

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