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3936 Datasheet

  • 3936

  • DMOS THREE-PHASE PWM MOTOR DRIVER

  • 9頁

  • ALLEGRO   ALLEGRO

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3936
DMOS THREE-PHASE
PWM MOTOR DRIVER
ABSOLUTE MAXIMUM RATINGS
at TA = +25擄C
Load Supply Voltage, V
BB
...........................
50 V
Output Current, I
OUT
...................................
鹵3
A*
Logic Supply Voltage, V
DD
.........................
7.0 V
Logic Input Voltage Range, V
IN
(t
W
>30 ns) ..........
-0.3 V to V
DD
+ 0.3 V
(t
W
<30 ns) ................
-1.0V to V
DD
+1V
Sense Voltage, V
SENSE
.................................
0.5 V
Reference Voltage, V
REF
................................
V
DD
Package Power Dissipation,
P
D
...............................................
3.9 W
Operating Temperature Range,
T
A
................................
-20擄C to +85擄C
Junction Temperature, T
J
.........................
+150擄C
Storage Temperature Range,
T
S
...............................
-55擄C to +150擄C
*
Output current rating may be limited by duty cycle,
ambient temperature, and heat sinking. Under any set of
conditions, do not exceed the specified current rating or a
junction temperature of 150擄C.
Designed for pulse-width modulated (PWM) current control of three-
phase brushless dc motors, the A3936SED is capable of peak output currents
to
鹵
3 A and operating voltages to 50 V. Internal fixed off-time PWM current-
control timing circuitry can be configured to operate in slow-, fast- and mixed-
decay modes.
Internal synchronous rectification control circuitry is provided to
improve power dissipation during PWM operation.
Internal circuit protection includes thermal shutdown with
hysteresis, and crossover current protection. Special power up sequencing is
not required.
The A3936 is supplied in a 44-pin plastic PLCC with a copper
batwing tabs (suffix 鈥楨D鈥?. The power tabs are at ground potential and need
no electrical isolation. This device is also available in a lead-free version
(100% matte tin leadframe).
Features
鹵3 A, 50 V Continuous Output Rating
Low
r
DS(on)
Outputs (typically 500 m
鈩?/div>
source, 315 m
鈩?/div>
sink)
Configurable Mixed, Fast and Slow Current-Decay Modes
Synchronous Rectification for Low Power Dissipation
Internal UVLO and Thermal Shutdown Circuitry
Crossover-Current Protection
Tachometer Output for External Speed Control Loop
Always order by complete part number
Part Number
Package
A3936SED
44-pin PLCC
A3936SED-T
44-pin PLCC, Lead-free
A3936-DS Rev. 1

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  • 英文版
    DMOS THREE-PHASE PWM MOTOR DRIVER
    ALLEGRO
  • 英文版
    DMOS THREE-PHASE PWM MOTOR DRIVER
    ALLEGRO [A...

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