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UDN2936W-120 Datasheet

  • UDN2936W-120

  • 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER

  • 10頁

  • ALLEGRO   ALLEGRO

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2936
-120
Combining logic and power, the UDN2936W-120 provides com-
mutation and drive for three-phase brushless dc motors. Each of the
three outputs are rated at 45 V and
鹵2
A (鹵3 A peak), and include
internal ground clamp and flyback diodes. The driver also features
internal commutation logic, PWM current control, and thermal shut-
down protection.
3-PHASE BRUSHLESS DC MOTOR
CONTROLLER/DRIVER
The UDN2936W-120 is compatible with single-ended digital or
linear Hall effect sensors. The commutating logic is programmed for
120擄 electrical separation. The UDN2936W-120 can replace the
original UDN2936W (60擄 electrical separation) by simply adding an
inverter at the H
2
input. Current control is accomplished by sensing
current through an external sense resistor and pulse-width modulating
the source drivers. Voltage thresholds and hysteresis can be externally
set by the user. If desired, internal threshold and hysteresis defaults
(300 mV, 7.5 percent) can be used. The UDN2936W-120 also includes
braking and direction control. Internal protection circuitry prevents
crossover current when braking or changing direction.
The UDN2936W-120 is also available for operation between -40擄C
and +85擄C. To order, change the prefix from 鈥楿DN鈥?to 鈥楿DQ鈥?
For maximum power-handling capability, the UDN2936W-120 is
supplied in 12-pin single in-line power-tab package. An external heat
sink may be required for high-current applications. The tab is at
ground potential and needs no insulation.
Data Sheet
29318.20B
ABSOLUTE MAXIMUM RATINGS
at T
J
鈮?/div>
+150擄C
Supply Voltage, V
BB
. . . . . . . . . . . . . . .
45 V
Output Current, I
OUT
(continuous) . . . . . . . . . . . . . . . .
鹵
2.0 A
(peak) . . . . . . . . . . . . . . . . . . . . .
鹵
3.0 A
Input Voltage Range, V
IN
. . .
-0.3 V to 15 V
Threshold Voltage, V
THS
. . . . . . . . . . . .
15 V
Package Power Dissipation,
P
D
. . . . . . . . . . . . . . . . . . .
See Graph
Operating Temperature Range,
T
A
. . . . . . . . . . . . . . . .
-20
擄
C to +85
擄
C
Storage Temperature Range,
T
S
. . . . . . . . . . . . . . . .
-55
擄
C to +150
擄
C
Note: Output current rating may be limited by
duty cycle, ambient temperature, and heat
sinking. Under any set of conditions, do not
exceed the specified peak current and a junction
temperature of +150擄C.
FEATURES
I
10 V to 45 V Operation
I
鹵3
A Peak Output Current
I
Internal Clamp Diodes
I
Internal PWM Current Control
I
120擄 Commutation Decoding Logic
I
Thermal Shutdown Protection
I
Compatible with Single-Ended or Differential Hall-Effect Sensors
I
Braking and Direction Control
Always order by complete part number, e.g.,
UDN2936W-120
.

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