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A3969 Datasheet(PDF) 5 Page - Allegro MicroSystems

Part No. A3969
Description  Dual Full-Bridge PWM Motor Driver
Download  9 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A3969 Datasheet(HTML) 5 Page - Allegro MicroSystems

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Dual Full-Bridge PWM Motor Driver
A3969
5
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
PWM RC Frequency
fosc
CT = 680 pF, RT = 56 kΩ
22.9
25.4
27.9
kHz
PWM Propagation Delay Time
tPWM
Comparator Trip to Source OFF
1.0
1.4
μs
Cycle Reset to Source ON
0.8
1.2
μs
Cross-Over Dead Time
tcodt
100
Ω Load to 15 V
0.2
1.3
3.0
μs
Propagation Delay Times
tpd
IOUT = ±650 mA, 50% to 50%; VBB = 15 V:
ENABLE ON to Source ON
125
ns
ENABLE OFF to Source OFF
500
ns
ENABLE ON to Sink ON
200
ns
ENABLE OFF to Sink OFF
200
ns
PHASE Change to Sink ON
1500
ns
PHASE Change to Sink OFF
200
ns
PHASE Change to Source ON
1500
ns
PHASE Change to Source OFF
200
ns
Thermal Shutdown Temp.
TJ
165
°C
Thermal Shutdown Hysteresis
ΔTJ
—15
°C
UVLO Enable Threshold
VT(UVLO)+
Increasing VCC
2.75
3.0
V
UVLO Hysteresis
VT(UVLO)hys
0.07
0.10
V
Logic Supply Current
ICC(ON)
VENABLE 1 = VENABLE 2 = 0.8 V
50
mA
ICC(OFF)
VENABLE 1 = VENABLE 2 = 2.4 V
9.0
mA
Limits
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
ELECTRICAL CHARACTERISTICS at TA = +25°C, VBB = 30 V, VCC = 3.0 V to 3.6 V, VREF = 1.7 V,
VS = 0 V, 56 k
Ω and 680 pF RC to Ground (unless noted otherwise) (cont.)
Control Logic
(continued)
NOTES:
1. Typical Data is for design information only.
2. Negative current is defined as coming out of (sourcing) the specified device terminal.


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