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8902A Datasheet(PDF) 3 Page - Allegro MicroSystems

Part # 8902A
Description  3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

8902A Datasheet(HTML) 3 Page - Allegro MicroSystems

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8902–A
3-PHASE BRUSHLESS DC
MOTOR CONTROLLER/DRIVER
ELECTRICAL CHARACTERISTICS at TA = +25
°C, V
DD = 5.0 V
Limits
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Logic Supply Voltage
VDD
Operating
4.5
5.0
5.5
V
Logic Supply Current
IDD
Operating
7.5
10
mA
Sleep Mode
250
500
µA
Load Supply Voltage
VBB
Operating
4.0
14
V
Thermal Shutdown
TJ
165
°C
Thermal Shutdown Hysteresis
∆T
J
20
°C
Output Drivers
Output Leakage Current
IDSX
VBB = 14 V, VOUT = 14 V
1.0
300
µA
VBB = 14 V, VOUT = 0 V
-1.0
-300
µA
Total Output ON Resistance
rDS(on)
IOUT = 600 mA
1.0
1.4
Output Sustaining Voltage
VDS(sus)
VBB = 14 V, IOUT = IOUT(MAX), L = 3 mH
14
——
V
Clamp Diode Forward Voltage
VF
IF = 1.0 A
1.25
1.5
V
Control Logic
Logic Input Voltage
VIN(0)
SECTOR DATA, RESET, CLK,
-0.3
1.5
V
VIN(1)
CHIP SELECT, OSC
3.5
5.3
V
Logic Input Current
IIN(0)
VIN = 0 V
——
-0.5
µA
IIN(1)
VIN = 5.0 V
——
1.0
µA
DATA Output Voltage
VOUT(0)
IOUT = 500
µA
——
1.5
V
VOUT(1)
IOUT = -500 µA
3.5
——
V
CST Current
ICST
Charging
-9.0
-10
-11
µA
Discharging
500
µA
CST Threshold
VCSTH
2.25
2.5
2.75
V
VCSTL
0.85
1.0
1.15
V
Filter Current
IFILTER
Charging
-9.0
-10
-11
µA
Discharging
9.0
10
11
µA
Leakage, VFILTER = 2.5 V
——
5.0
nA
Filter Threshold
VFILTERTH
1.57
1.85
2.13
V
CD Current
ICD
Charging
-18
-20
-22
µA
Discharging
32
40
48
µA
CD Current Matching
ICD(DISCHRG)/ICD(CHRG)
1.8
2.0
2.2
CD Threshold
VCDTH
2.25
2.5
2.75
V
Continued next page …
(Source + Sink + RS)
(CD1 or CD2)


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