參數(shù)資料
型號(hào)： 3953
廠商： Allegro MicroSystems, Inc.
元件分類(lèi)： 基準(zhǔn)電壓源/電流源
英文描述： FULL-BRIDGE PWM MOTOR DRIVER
中文描述： 全橋PWM電機(jī)驅(qū)動(dòng)
文件頁(yè)數(shù)： 1/14頁(yè)
文件大?。?/td> 230K
代理商： 3953
Part Number
A3953SB
A3953SLB
Package
16-Pin DIP
16-Lead SOIC
R
θ
JA
43
°
C/W
67
°
C/W
R
θ
JT
6
°
C/W
6
°
C/W
FULL-BRIDGE PWM MOTOR DRIVER
Always order by complete part number:
Note the A3953SB (DIP) and the A3953SLB
(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) . . . . . . . . . . . . . .
±
1.3 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
SENSE
(V
CC
= 5.0 V) . . . . . . . . . . . . . . . .
1.0 V
(V
CC
= 3.3 V) . . . . . . . . . . . . . . . .
0.4 V
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 150C.
Fault conditions that produce excessive junction
temperature will activate the device’s thermal
shutdown circuitry. These conditions can be
tolerated but should be avoided.
Designed for bidirectional pulse-width modulated (PWM) current control
of inductive loads, the A3953S— is capable of continuous output currents to
±
1.3 A and operating voltages to 50 V. Internal fixed off-time PWM current-
control circuitry can be used to regulate the maximum load current to a
desired value. The peak load current limit is set by the user’s selection of an
input reference voltage and external sensing resistor. The fixed off-time pulse
duration is set by a user- selected external RC timing network. Internal circuit
protection includes thermal shutdown with hysteresis, transient-suppression
diodes, and crossover current protection. Special power-up sequencing is not
required.
With the ENABLE input held low, the PHASE input controls load current
polarity by selecting the appropriate source and sink driver pair. The MODE
input determines whether the PWM current-control circuitry operates in a
slow current-decay mode (only the selected source driver switching) or in a
fast current-decay mode (selected source and sink switching). A user-
selectable blanking window prevents false triggering of the PWM current-
control circuitry. With the ENABLE input held high, all output drivers are
disabled. A sleep mode is provided to reduce power consumption.
When a logic low is applied to the BRAKE input, the braking function is
enabled. This overrides ENABLE and PHASE to turn off both source drivers
and turn on both sink drivers. The brake function can be used to dynamically
brake brush dc motors.
The A3953S— is supplied in a choice of two power packages; a 16-pin
dual-in-line plastic package with copper heat-sink tabs, and a 16-lead plastic
SOIC with copper heat-sink tabs. For both package styles, the power tab is at
ground potential and needs no electrical isolation.
FEATURES
I
±
1.3 A Continuous Output Current
I
50 V Output Voltage Rating
I
3 V to 5.5 V Logic Supply Voltage
I
Internal PWM Current Control
I
Saturated Sink Drivers (Below 1 A)
I
Fast and Slow Current-Decay Modes
I
Automotive Capable
I
Sleep (Low Current
Consumption) Mode
I
Internal Transient-
Suppression Diodes
I
Internal Thermal-
Shutdown Circuitry
I
Crossover-Current
and UVLO Protection
D
2
3953
MODE
GROUND
GROUND
LOGIC
SUPPLY
PHASE
GROUND
GROUND
RC
SENSE
LOAD
SUPPLY
Dwg. PP-056
BRAKE
REF
LOAD
SUPPLY
V
CC
OUTB
OUTA
V
BB
V
BB
LOGIC
ENABLE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
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PDF描述
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39606HS 39606HS
39606HS-02000 39606HS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
3953_05 制造商:ALLEGRO 制造商全稱(chēng):Allegro MicroSystems 功能描述:FULL-BRIDGE PWM MOTOR DRIVER
395300002 制造商:MOLEX 制造商全稱(chēng):Molex Electronics Ltd. 功能描述:5.08mm (.200") Pitch Eurostyle? Horizontal Plug, 2 Circuits
39530-0002 功能描述:可插拔接線端子 5.08MM EURO PLUG RA BLK 2CKT RoHS:否 制造商:Phoenix Contact 產(chǎn)品:Plugs 系列:PTS 端接類(lèi)型:Spring Cage 位置/觸點(diǎn)數(shù)量:5 線規(guī)量程:26-14 節(jié)距:5 mm 電流額定值:10 A 電壓額定值:250 V 安裝風(fēng)格: 安裝角: 觸點(diǎn)電鍍:
395300003 制造商:MOLEX 制造商全稱(chēng):Molex Electronics Ltd. 功能描述:5.08mm (.200") Pitch Eurostyle? Horizontal Plug, 3 Circuits
39530-0003 功能描述:可插拔接線端子 5.08MM EURO PLUG RA BLK 3CKT RoHS:否 制造商:Phoenix Contact 產(chǎn)品:Plugs 系列:PTS 端接類(lèi)型:Spring Cage 位置/觸點(diǎn)數(shù)量:5 線規(guī)量程:26-14 節(jié)距:5 mm 電流額定值:10 A 電壓額定值:250 V 安裝風(fēng)格: 安裝角: 觸點(diǎn)電鍍:
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