參數(shù)資料
型號(hào)： A3948SB
廠商： Allegro MicroSystems, Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： DMOS FULL-BRIDGE PWM MOTOR DRIVER
中文描述： DMOS全橋PWM電機(jī)驅(qū)動(dòng)
文件頁(yè)數(shù)： 1/12頁(yè)
文件大小： 146K
代理商： A3948SB
D
2
3948
DMOS FULL-BRIDGE PWM
MOTOR DRIVER
Always order by complete part number:
Part Number
Package
R
θ
JA
40
°
C/W
77
°
C/W
R
θ
JT
6
°
C/W
6
°
C/W
A3948SB
24-pin batwing DIP
A3948SLB
24-lead batwing SOIC
Designed for pulse-width modulated (PWM) current control of dc
motors, the A3948SB and A3948SLB are capable of continuous output
currents to
±
1.5 A and operating voltages to 50 V. Internal fixed off-
time PWM current-control timing circuitry can be programmed via a
serial interface to operate in slow, fast, and mixed current-decay
modes. Similar devices with outputs rated to
±
2 A are available as the
A3958SB/SLB.
PHASE and ENABLE input terminals are provided for use in
controlling the speed and direction of a dc motor with externally
applied PWM-control signals. The ENABLE input can be
programmed via the serial port to PWM the bridge in fast or slow
current decay. Internal synchronous rectification control circuitry is
provided to reduce 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 A3948SB/SLB is supplied in a choice of two power
packages, a 24-pin plastic DIP with a copper batwing tab (package
suffix ‘B’), and a 24-lead plastic SOIC with a copper batwing tab
(package suffix ‘LB’). In both cases, the power tab is at ground
potential and needs no electrical isolation.
FEATURES
I
±
1.5 A, 50 V Continuous Output Rating
I
Low
r
DS(on)
Outputs
I
Programmable Mixed, Fast, and Slow Current-Decay Modes
I
Serial Interface Controls Chip Functions
I
Synchronous Rectification for Low Power Dissipation
I
Internal UVLO and Thermal-Shutdown Circuitry
I
Crossover-Current Protection
A3948SLB
(SOIC)
S
V
BB
24
23
22
21
20
19
18
17
16
15
14
13
GROUND
GROUND
RANGE
NO
CONNECTION
OUT
B
LOAD SUPPLY
SENSE
OUT
A
NO
CONNECTION
MODE
REF
V
REG
Dwg. PP-069A
1
2
3
4
5
6
7
8
9
9
12
11
10
GROUND
GROUND
CP
CP
2
CP
1
PHASE
V
DD
ENABLE
DATA
CLOCK
STROBE
LOGIC SUPPLY
θ
OSC
L
NC
NC
C
÷
ABSOLUTE MAXIMUM RATINGS
Load Supply Voltage, V
BB
..................
50 V
Output Current, I
OUT
........................
±
1.5 A
Logic Supply Voltage, V
DD
................
7.0 V
Input Voltage, V
IN
....
-0.3 V to V
DD
+ 0.3 V
Sense Voltage, V
S
..........................
0.55 V
Reference Voltage, V
REF
..................
5.5 V
Package Power Dissipation (T
A
= 25
°
C), P
D
A3948SB .................................
3.1 W*
A3948SLB ...............................
1.6 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.
* Per SEMI G42-88 Specification.
Note that the A3948SLB(SOIC) and A3948SB
(DIP) do not share a common terminal
assignment.
相關(guān)PDF資料
PDF描述
A3949 DMOS Full-Bridge Motor Driver
A3949SLB DMOS Full-Bridge Motor Driver
A3949SLB-T DMOS Full-Bridge Motor Driver
A3949SLP DMOS Full-Bridge Motor Driver
A3949SLP-T DMOS Full-Bridge Motor Driver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
A3948SLB 功能描述:IC MOTOR DRIVER PWM FULL 24-SOIC 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
A3948SLBTR 功能描述:IC MOTOR DRIVER PWM FULL 24-SOIC 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
A3949 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:DMOS Full-Bridge Motor Driver
A3949_04 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:DMOS Full-Bridge Motor Driver
A3949SLB 功能描述:IC MOTOR DRIVER PWM FULL 16-SOIC 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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