3974 データシートの表示（PDF） - Allegro MicroSystems

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3974

DMOS DUAL FULL-BRIDGE PWM MOTOR DRIVER

Allegro MicroSystems 

3974

DMOS DUAL FULL-BRIDGE

PWM MOTOR DRIVER

ELECTRICAL CHARACTERISTICS at TA = +25°C, VBB = 50 V, VDD = 5.0 V, fPWM < 50 kHz (unless

otherwise noted), continued.

Characteristic

Control Logic (continued)

Reference Input Current

Reference Input Offset Voltage

Reference Divider Ratio

Symbol

IREF

VIO

VREF/VS

Gain (Gm) Error (note 3)

EG

Propagation Delay Time

tpd

Crossover Delay Time

tCOD

Thermal Shutdown Temperature TJ

Thermal Shutdown Hysteresis

∆TJ

UVLO Enable Threshold

VUVLO

UVLO Hysteresis

∆VUVLO

Logic Supply Current

IDD

Test Conditions

VREF = 2.6 V

D16 = 1

D16 = 0

VREF = 2.6 V, D16 = 0

VREF = 0.5 V, D16 = 0

VREF = 2.6 V, D16 = 1

VREF = 0.5 V, D16 = 1

50% TO 90%:

PWM change to source on

PWM change to source off

PWM change to sink on

PWM change to sink off

SR enabled

Increasing VDD

fPWM < 50 kHz

Outputs off

Idle mode (D18 = 1, D19 = 0)

Sleep mode (inputs below 0.5 V)

Limits

Min. Typ. Max.

Units

—

— ±1.0

µA

— ±10 —

mV

— 10 —

—

— 5.0 —

—

—

0 ±4.0

%

—

0 ±14

%

—

0 ±4.0

%

—

0 ±10

%

600 750 1000

ns

50 150 350

ns

600 750 1000

ns

50 150 350

ns

300 600 1000

ns

— 165 —

°C

— 15 —

°C

3.9 4.2 4.45

V

0.05 0.10 —

V

—

—

10

mA

—

—

8.0

mA

—

—

1.5

mA

—

— 100

µA

NOTES: 1. Typical Data is for design information only.

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

3. EG = [(VREF/Range) - VS]/(VREF/Range).

4

115 Northeast Cutoff, Box 15036

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

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