音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

3955 Datasheet

  • 3955

  • FULL-BRIDGE PWM MICROSTEPPING MOTOR DRIVER

  • 16頁

  • ALLEGRO   ALLEGRO

掃碼查看芯片數(shù)據(jù)手冊(cè)

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

3955
FULL-BRIDGE PWM
MICROSTEPPING MOTOR DRIVER
PFD
REF
RC
GROUND
GROUND
LOGIC
SUPPLY
PHASE
D2
1
2
3
4
LOGIC
5
6
7
8
V
CC
12
11
10
9
GROUND
SENSE
OUTA
D1
V
BB
16
15
14
13
LOAD
SUPPLY
OUTB
D0
GROUND
Data Sheet
29319.41
The A3955SB and A3955SLB are designed for driving one winding
of a bipolar stepper motor in a microstepping mode. The outputs are
rated for continuous output currents to
鹵1.5
A and operating voltages
to 50 V. Internal pulse-width modulated (PWM) current control com-
bined with an internal three-bit nonlinear digital-to-analog converter
allows the motor current to be controlled in full-, half-, quarter-, or
eighth-step (microstepping) modes. Nonlinear increments minimize
the number of control lines necessary for microstepping.
Microstepping provides for increased step resolution, and reduces
torque variations and resonance problems at low speed.
Internal circuitry determines whether the PWM current-control
circuitry operates in a slow (recirculating) current-decay mode, fast
(regenerative) current-decay mode, or in a mixed current-decay mode
in which the off time is divided into a period of fast current decay with
the remainder of the fixed off time spent in slow current decay. The
combination of user-selectable current-sensing resistor and reference
voltage, digitally selected output current ratio; and slow, fast, or mixed
current-decay modes provides users with a broad, variable range of
motor control.
Internal circuit protection includes thermal shutdown with hyster-
esis, transient-suppression diodes, and crossover current protection.
Special power-up sequencing is not required.
The A3955S鈥?is supplied in a choice of two power packages; a
16-pin dual-in-line plastic package with copper heat-sink tabs (suffix
鈥楤鈥?, and a 16-lead plastic SOIC with copper heat-sink tabs (suffix 鈥楲B鈥?.
For both package styles, the power tab is at ground potential and
needs no electrical isolation.
Dwg. PP-056-2
Note the A3955SB (DIP) and the A3955SLB
(SOIC) are electrically identical and share a
common terminal number assignment.
ABSOLUTE MAXIMUM RATINGS
Load Supply Voltage, V
BB
. . . . . . . . . .
50 V
Output Current, I
OUT
(Continuous) . . . . . . . . . . . . . .
鹵
1.5 A*
Logic Supply Voltage, V
CC
. . . . . . . . .
7.0 V
Logic/Reference Input Voltage Range,
V
IN
. . . . . . . . . . .
-0.3 V to V
CC
+ 0.3 V
Sense Voltage, V
S
. . . . . . . . . . . . . . . .
1.0 V
Package Power Dissipation,
P
D
. . . . . . . . . . . . . . . . . . . .
See Graph
Operating Temperature Range,
T
A
. . . . . . . . . . . . . . . . .
-20藲C to +85藲C
Junction Temperature, T
J
. . . . . . .
+150藲C鈥?/div>
Storage Temperature Range,
T
S
. . . . . . . . . . . . . . . .
-55藲C to +150藲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藲C.
鈥?Fault conditions that produce excessive junction
temperature will activate the device鈥檚 thermal
shutdown circuitry. These conditions can be
tolerated but should be avoided.
FEATURES
s
s
s
s
s
s
s
s
鹵1.5
A Continuous Output Current
50 V Output Voltage Rating
Internal PWM Current Control
3-Bit Non-Linear DAC
Fast, Mixed Fast/Slow, and Slow Current-Decay Modes
Internal Transient-Suppression Diodes
Internal Thermal-Shutdown Circuitry
Crossover-Current and UVLO Protection
Always order by complete part number:
Part Number
A3955SB
A3955SLB
Package
16-Pin DIP
16-Lead SOIC

3955 產(chǎn)品屬性

  • 0現(xiàn)貨

  • 1 : ￥11.92000散裝

  • -

  • 散裝

  • 在售

  • 纜線組件

  • STEMMA

3955相關(guān)型號(hào)PDF文件下載

  • 型號(hào)
    版本
    描述
    廠商
    下載
  • 英文版
    FULL-BRIDGE PWM MICROSTEPPING MOTOR DRIVER
    ALLEGRO
  • 英文版
    FULL-BRIDGE PWM MICROSTEPPING MOTOR DRIVER
    ALLEGRO [A...

您可能感興趣的PDF文件資料

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時(shí)間周一至周五
9:00-17:30

關(guān)注官方微信號(hào)，
第一時(shí)間獲取資訊。

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動(dòng)力！意見一經(jīng)采納，將有感恩紅包奉上哦！