A3968SLBTR-T(2008) データシートの表示（PDF） - Allegro MicroSystems
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A3968SLBTR-T Datasheet PDF : 8 Pages
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A3968
Dual Full-Bridge PWM Motor Driver with Brake
ELECTRICAL CHARACTERISTICS at TA = +25°C, VBB = 30 V, VCC = 4.75 V to 5.5 V, VREF = 2 V,
VS = 0 V, 56 kΩ & 680 pF RC to Ground (unless noted otherwise) (cont.)
Limits
Characteristic
Symbol Test Conditions
Min. Typ. Max. Units
Control Logic (continued)
PWM RC Frequency
PWM Propagation Delay Time
fosc
tPWM
CT = 680 pF, RT = 56 kΩ
Comparator Trip to Source OFF
Cycle Reset to Source ON
22.9
25.4
27.9
kHz
—
1.0
1.4
μs
—
0.8
1.2
μs
Cross-Over Dead Time
Propagation Delay Times
tcodt
1 kΩ Load to 25 V
tpd
IOUT = ±650 mA, 50% to 90%:
Disable OFF to Source ON
Disable ON to Source OFF
Disable OFF to Sink ON
Disable ON to Sink OFF
Brake Enable to Sink ON
Brake Enable to Source OFF
0.2
1.8
3.0
μs
—
100
—
ns
—
500
—
ns
—
200
—
ns
—
200
—
ns
—
2200
—
ns
—
200
—
ns
Thermal Shutdown Temp.
Thermal Shutdown Hysteresis
UVLO Enable Threshold
UVLO Hysteresis
Logic Supply Current
TJ
ΔTJ
VT(UVLO)+
VT(UVLO)hys
ICC(ON)
ICC(OFF)
ICC(BRAKE)
Increasing VCC
Both bridges ON (forward or reverse)
All INPUTs = 2.4 V
All INPUTs = 0.8 V
—
165
—
°C
—
15
—
°C
—
4.1
4.6
V
0.1
0.6
—
V
—
—
50
mA
—
—
9.0
mA
—
—
95
mA
NOTES:1. Typical Data is for design information only.
2. Negative current is defined as coming out of (sourcing) the specified device terminal.
2.5
TA = +25°C
2.0
1.5
SOURCE DRIVER
1.0
Typical output saturation voltages showing
Satlington sink-driver operation.
0.5
SINK DRIVER
0
200
300
400
500
600
700
OUTPUT CURRENT IN MILLIAMPERES
Allegro MicroSystems, Inc.
5
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
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