A3974SED View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
'A3974SED' PDF : 12 Pages View PDF
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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