A3959 データシートの表示（PDF） - Allegro MicroSystems

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A3959

DMOS Full-Bridge PWM Motor Driver

Allegro MicroSystems 

A3959

DMOS Full-Bridge PWM Motor Driver

ELECTRICAL CHARACTERISTICS (continued) at TA = +25°C, VBB = 50 V, VDD = 5.0 V, VSENSE = 0.5 V,

fPWM < 50 kHz (unless noted otherwise)

Characteristics

Symbol

Test Conditions

Min. Typ. Max. Units

Reference Divider Ratio

–

–

10

–

–

Gm Error

(Note 3)

EGm

VREF = VDD

VREF = 0.5 V

0.5 Ein to 0.9 Eout:

PWM change to source on

–

–

±4.0

%

–

–

±14

%

600

750

1200

ns

Propagation Delay Times

tpd

PWM change to source off

PWM change to sink on

50

150

350

ns

600

750

1200

ns

PWM change to sink off

50

100

150

ns

Thermal Shutdown Temp.

Thermal Shutdown Hysteresis

UVLO Enable Threshold

UVLO Hysteresis

TJ

∆TJ

UVLO

∆UVLO

Increasing VDD

–

165

–

°C

–

15

–

°C

3.90 4.2

4.45

V

0.05 0.10

–

V

NOTES:

1. Typical Data is for design information only.

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

3. Gm error = ([VREF/10] – VSENSE)/(VREF/10) where VSENSE = ITRIP•RS.

Allegro MicroSystems, Inc.

5

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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