A3936SED
器件描述：DMOS THREE-PHASE PWM MOTOR DRIVER
器件厂商：ALLEGRO [Allegro MicroSystems]
文件大小：177.63KB，共9页
Sponsor by e络盟器件资料摘要：
3936
A3936-DS Rev. 1
Designed for pulse-width modulated (PWM) current control of three-
phase brushless dc motors, the A3936SED is capable of peak output currents
to ± 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 ‘ED’). 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
null ±3 A, 50 V Continuous Output Rating
null Low r
DS(on)
Outputs (typically 500 mΩ source, 315 mΩ sink)
null Configurable Mixed, Fast and Slow Current-Decay Modes
null Synchronous Rectification for Low Power Dissipation
null Internal UVLO and Thermal Shutdown Circuitry
null Crossover-Current Protection
null 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
ABSOLUTE MAXIMUM RATINGS
at T
A
= +25°C
Load Supply Voltage, V
BB
........................... 50 V
Output Current, I
OUT
................................... ±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°C to +85°C
Junction Temperature, T
J
......................... +150°C
Storage Temperature Range,
T
S
............................... -55°C to +150°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°C.
DMOS THREE-PHASE
PWM MOTOR DRIVER
A3936-DS Rev. 1
Designed for pulse-width modulated (PWM) current control of three-
phase brushless dc motors, the A3936SED is capable of peak output currents
to ± 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 ‘ED’). 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
null ±3 A, 50 V Continuous Output Rating
null Low r
DS(on)
Outputs (typically 500 mΩ source, 315 mΩ sink)
null Configurable Mixed, Fast and Slow Current-Decay Modes
null Synchronous Rectification for Low Power Dissipation
null Internal UVLO and Thermal Shutdown Circuitry
null Crossover-Current Protection
null 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
ABSOLUTE MAXIMUM RATINGS
at T
A
= +25°C
Load Supply Voltage, V
BB
........................... 50 V
Output Current, I
OUT
................................... ±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°C to +85°C
Junction Temperature, T
J
......................... +150°C
Storage Temperature Range,
T
S
............................... -55°C to +150°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°C.
DMOS THREE-PHASE
PWM MOTOR DRIVER