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3961 Folha de dados(PDF) 4 Page - Allegro MicroSystems

Nome de Peças 3961
Descrição Electrónicos  DUAL FULL-BRIDGE PWM MOTOR DRIVER
Download  10 Pages
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Fabricante Electrônico  ALLEGRO [Allegro MicroSystems]
Página de início  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

3961 Folha de dados(HTML) 4 Page - Allegro MicroSystems

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3961
DUAL FULL-BRIDGE
PWM MOTOR DRIVER
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
ELECTRICAL CHARACTERISTICS at TA = +25°C, VBB = 45 V, VCC = 4.75 V to 5.25 V, VSENSE = 0
V, 30 kW & 1000 pF RC to Ground (unless noted otherwise) (cont.)
Limits
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Reference Output Current
IREF OUT
3 k
Ω ≤ R
D = R1 + R2 ≤ 15 kΩ
90
900
µA
Ref. Input Offset Current
IOS
VREF IN = 1 V
-2.5
0
1.0
µA
Comparator Input Offset Volt.
VIO
VREF = 0 V
-5.0
0
5.0
mV
Comparator Input Volt. Range
VREF
Operating
-0.3
1.0
V
PWM RC Fixed Off-time
tOFF RC
CT = 1000 pF, RT = 30 kΩ
27
30
33
µs
PWM Propagation Delay Time
tPWM
Comparator Trip to Source OFF
1.2
2.0
µs
PWM Minimum On Time
tON(min)
CT = 1000 pF ± 5%, RT ≥ 15 kΩ, VCC = 5 V
2.5
3.6
µs
Propagation Delay Times
tpd
IOUT = ±800 mA, 50% to 90%:
ENABLE ON to Source ON
3.2
µs
ENABLE OFF to Source OFF
1.2
µs
ENABLE ON to Sink ON
3.2
µs
ENABLE OFF to Sink OFF
0.7
µs
PHASE Change to Sink ON
3.2
µs
PHASE Change to Source ON
3.2
µs
PHASE Change to Sink OFF
0.7
µs
PHASE Change to Source OFF
1.2
µs
Thermal Shutdown Temp.
TJ
165
˚C
Thermal Shutdown Hysteresis
∆T
J
—15
˚C
UVLO Disable Threshold
2.5
2.7
2.9
V
UVLO Hysterisis
0.7
0.9
1.1
V
Logic Supply Current
ICC(ON)
VENABLE1 = VENABLE2 = 0.8 V
65
85
mA
ICC(OFF)
VENABLE1 = VENABLE2 = 2.4 V
11
15
Logic Supply Current
∆I
CC(ON)
VENABLE1 = VENABLE2 = 0.8 V
0.18
mA/˚C
Temperature Coefficient
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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