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A4934GLPTR-T Datasheet(PDF) 4 Page - Allegro MicroSystems

Part # A4934GLPTR-T
Description  Three-Phase Sensorless Fan Driver
Download  9 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A4934GLPTR-T Datasheet(HTML) 4 Page - Allegro MicroSystems

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ELECTRICAL CHARACTERISTICS Valid at TA = 25°C, VBB = 12 V; unless otherwise noted
Characteristics
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
VBB Supply Current
IBB
–
2.5
5
mA
IBBST
Standby mode, PWM = 0 V, SLEW = FC = O/C
–
25
50
μA
Total Driver RDS(on) (Sink + Source)
RDS(on)
I = 800 mA, TJ = 25°C
–
750
mΩ
Overcurrent Threshold
VOCL
180
200
220
mV
PWM Low Level
VIL
––2
V
PWM High Level
VIH
0.8
–
–
V
Input Hysteresis
VHYS
–
300
–
mV
Logic Input Current
IIN
PWM, FC VIN = 0 V
–
–20
–
μA
SLEW
–
–50
–
μA
Output Saturation Voltage
VSAT
I = 5 mA
–
–
0.3
V
FG Output Leakage
IFG
V = 16 V
–
–
1
μA
Protection Circuitry
Lock Protection
ton
–2–
s
toff
–5–
s
Thermal Shutdown Temperature
TJTSD
Temperature increasing
150
165
180
°C
Thermal Shutdown Hysteresis
TJHYS
Recovery = TJTSD – ∆TJ
–15–°C
VBB Undervoltage Lockout (UVLO)
VUVLO
VBB rising
–
6.3
–
V
VBB Undervoltage Lockout (UVLO)
Hysteresis
VUVLOHYS
–
0.56
–
V
Three-Phase Sensorless Fan Driver
A4934
3
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com


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