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參數(shù)資料
| 型號(hào)： | A3964 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Dual Full-Bridge PWM Motor Driver(雙全橋脈寬調(diào)制電流控制電機(jī)驅(qū)動(dòng)器（額定輸出電壓30V，額定輸出電流±800mA）) |
| 中文描述： | 雙路全橋式PWM馬達(dá)驅(qū)動(dòng)器（雙全橋脈寬調(diào)制電流控制電機(jī)驅(qū)動(dòng)器（30V的額定輸出電壓，額定輸出電流± 800mA的）） |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 191K |
| 代理商： | A3964 |
DUAL FULL-BRIDGE PWM MOTOR DRIVER
D
2
A3964SLB
Designed for pulse-width modulated (PWM) current control of bipolar
stepper motors, the A3964SB and A3964SLB are capable of continuous
output currents to
±
800 mA and operating voltages to 30 V. Internal fixed
off-time PWM current-control circuitry can be used to regulate the maximum
load current to a desired value. An internal precision voltage reference is
provided to improve motor peak-current control accuracy. The peak load
current limit is set by the user’s selection of an external resistor divider and
current-sensing resistors.
The fixed off-time pulse duration is set by user-selected external RC
timing networks. The capacitor in the RC timing network also determines a
user-selectable blanking window that prevents false triggering of the PWM
current control circuitry during switching transitions. This eliminates the
need for two external RC filter networks on the current-sensing comparator
inputs.
For each bridge the PHASE input controls load current polarity by
selecting the appropriate source and sink driver pair. For each bridge the
ENABLE input, when held high, disables the output drivers. Special power-
up sequencing is not required. Internal circuit protection includes thermal
shutdown with hysteresis, transient-suppression diodes, and crossover-current
protection.
The A3964SB is supplied in a 24-pin plastic DIP with copper heat sink
tabs; A3964SLB is supplied in a 20-lead plastic SOIC with copper heat sink
tabs. The power tabs are at ground potential and need no electrical isolation.
FEATURES
I
±
800 mA Continuous Output Current Rating
I
30 V Output Voltage Rating
I
Internal PWM Current Control, Saturated Sink Drivers
I
Internally Generated, Precision 2.5 V Reference
I
Internal Transient-Suppression Diodes
I
Internal Thermal-Shutdown Circuitry
I
Crossover-Current Protection, UVLO Protection
3964
1
V
BB
2
1
2
3
4
5
6
7
9
8
20
19
18
17
16
15
14
13
12
11
10
9
θ
2
θ
1
V
CC
P
P
GROUND
GROUND
GROUND
GROUND
PHASE
2
V
REF(OUT)
2
RC
1
RC
V
REF(IN)
PHASE
1
2B
OUT
SENSE
2
2A
OUT
1A
OUT
SENSE
1
1B
OUT
LOAD
SUPPLY
LOGIC
SUPPLY
Dwg. PP-047-1
ENABLE
1
ENABLE
2
Always order by complete part number:
Part Number
Package
A3964SB
24-Pin DIP
A3964SLB
20-Lead Wide-Body SOIC
ABSOLUTE MAXIMUM RATINGS
Load Supply Voltage, V
BB
. . . . . . . . .
33 V
Output Current, I
OUT
(10
μ
s) . . . . . .
±
1.0 A*
(continuous). . . . . . . . . . . . .
±
800 mA*
Logic Supply Voltage, V
CC
. . . . . . . . .
7.0 V
Logic Input Voltage Range,
V
IN
. . . . . . . . . . .
-0.3 V to V
CC
+ 0.3 V
Sense Voltage, V
S
. . . . . . . . . . . . . . .
1.0 V
Reference Output Current,
I
REF(OUT)
. . . . . . . . . . . . . . . . . .
1.0 mA
Package Power Dissipation,
P
D
. . . . . . . . . . . . . . . . . . . .
See Graph
Operating Temperature Range,
T
A
. . . . . . . . . . . . . . . .
-20C to +85C
Junction Temperature, T
J
. . . . . . .
+150C
Storage Temperature Range,
T
S
. . . . . . . . . . . . . . .
-55C to +150C
* 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.
Fault conditions that produce excessive junction
temperature will activate the device
’
s thermal shutdown
circuitry. These conditions can be tolerated but should
be avoided.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| A3966 | DUAL FULL-BRIDGE PWM MOTOR DRIVER |
| A3966SA | DUAL FULL-BRIDGE PWM MOTOR DRIVER |
| A3966SLB | DUAL FULL-BRIDGE PWM MOTOR DRIVER |
| A3967SLB | MICROSTEPPING DRIVER WITH TRANSLATOR |
| A3967SLB-T | MICROSTEPPING DRIVER WITH TRANSLATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A3964-0000T | 制造商:3M 制造商全稱:3M Electronics 功能描述:100 x 100, PCB Two Row |
| A3964-0010T | 制造商:3M 制造商全稱:3M Electronics 功能描述:100 x 100, PCB Two Row |
| A3964-2000T | 制造商:3M 制造商全稱:3M Electronics 功能描述:100 x 100, PCB Two Row |
| A3964-2010T | 制造商:3M 制造商全稱:3M Electronics 功能描述:100 x 100, PCB Two Row |
| A3964SB | 功能描述:IC MOTOR DRIVER PWM DUAL 24-DIP RoHS:否 類別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器，驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:直流電機(jī)驅(qū)動(dòng)器，步進(jìn)電機(jī)驅(qū)動(dòng)器 評(píng)估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負(fù)載:10 V ~ 40 V 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-BFSOP（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOP 包裝:Digi-Reel® 其它名稱:MTS62C19A-HS105DKR |
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