A3974 データシートの表示（PDF） - Allegro MicroSystems

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A3974

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).

Limits

Characteristic

Symbol Test Conditions

Min. Typ. Max. Units

Output Drivers

Load Supply Voltage Range

VBB

Operating

During sleep mode

15 — 50

V

0

— 50

V

Output Leakage Current

IDSS

VOUT = VBB

— <1.0 20

µA

VOUT = 0 V

— <-1.0 -20

µA

Output ON Resistance

rDS(on)

Source driver, IOUT = -1.5 A

— 0.5 0.55

Ω

Sink driver, IOUT = 1.5 A

— 0.315 0.35

Ω

Body Diode Forward Voltage

VF

Source diode, IF = 1.5 A

—

—

1.2

V

Sink diode, IF = 1.5 A

—

—

1.2

V

Load Supply Current

IBB

fPWM < 50 kHz

— 4.0 7.0

mA

Charge pump on, outputs disabled

— 2.0 5.0

mA

Sleep or idle mode

—

—

20

µA

Control Logic

Logic Supply Voltage Range

Logic Input Voltage

Logic Input Current

(except ENABLE)

ENABLE Input Current

VDD

VIN(1)

VIN(0)

IIN(1)

IIN(0)

IEN(1)

Operating

VIN = 2.0 V

VIN = 0.8 V

VEN = 2.0 V

4.5 5.0 5.5

V

2.0 —

—

V

—

—

0.8

V

— <1.0 ±20

µA

— <1.0 ±20

µA

— 40 100

µA

OSC Input Frequency

OSC Input Duty Cycle

OSC Input Hysterisis

Reference Input Voltage Range

IEN(0)

fOSC

—

∆VIN

VREF

VEN = 0.8 V

Operating

— 16 30

2.9 — 6.1

40 — 60

200 — 400

0

— 2.6

µA

MHz

%

mV

V

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