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A3948SB

更新时间： 2024-11-08 22:26:39
品牌 Logo 应用领域
急速微 - ALLEGRO 驱动器电机
页数 文件大小 规格书
12页 148K
描述
DMOS FULL-BRIDGE PWM MOTOR DRIVER

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中文翻译

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A3948SB 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：DIP包装说明：PLASTIC, DIP-24
针数：24Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.82其他特性：ALSO REQUIRES A 20V TO 50V SUPPLY
模拟集成电路 - 其他类型：BRUSHLESS DC MOTOR CONTROLLERJESD-30 代码：R-PDIP-T24
JESD-609代码：e3长度：32.51 mm
功能数量：1端子数量：24
最高工作温度：85 °C最低工作温度：-20 °C
最大输出电流：1.5 A封装主体材料：PLASTIC/EPOXY
封装代码：DIP封装等效代码：DIP24,.3
封装形状：RECTANGULAR封装形式：IN-LINE
峰值回流温度（摄氏度）：NOT SPECIFIED电源：5,50 V
认证状态：Not Qualified座面最大高度：5.33 mm
子类别：Motion Control Electronics最大供电电流 (Isup)：10 mA
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：4.5 V
标称供电电压 (Vsup)：5 V表面贴装：NO
技术：NMOS温度等级：OTHER
端子面层：Matte Tin (Sn)端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7.62 mm
Base Number Matches：1

A3948SB 数据手册

 浏览型号A3948SB的Datasheet PDF文件第2页浏览型号A3948SB的Datasheet PDF文件第3页浏览型号A3948SB的Datasheet PDF文件第4页浏览型号A3948SB的Datasheet PDF文件第5页浏览型号A3948SB的Datasheet PDF文件第6页浏览型号A3948SB的Datasheet PDF文件第7页 
3948  
DMOS FULL-BRIDGE PWM  
MOTOR DRIVER  
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.  
A3948SLB (SOIC)  
CP  
24  
VREG  
1
2
3
4
CP2  
23 RANGE  
NO  
CP1  
NC  
BB  
22  
CONNECTION  
θ
PHASE  
OSC  
21  
OUT  
B
V
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.  
20  
19  
18  
5
6
7
8
LOAD SUPPLY  
GROUND  
GROUND  
SENSE  
GROUND  
GROUND  
LOGIC SUPPLY  
V
DD  
17  
16  
9
ENABLE  
DATA  
OUT  
A
NO  
NC  
15  
14  
13  
10  
Internal circuit protection includes thermal shutdown with  
hysteresis, and crossover-current protection. Special power-up  
sequencing is not required.  
CONNECTION  
MODE  
CLOCK 11  
STROBE 12  
÷
REF  
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.  
Dwg. PP-069A  
Note that the A3948SLB(SOIC) and A3948SB  
(DIP) do not share a common terminal  
assignment.  
ABSOLUTE MAXIMUM RATINGS  
FEATURES  
■ ±1.5 A, 50 V Continuous Output Rating  
■ Low rDS(on) Outputs  
■ Programmable Mixed, Fast, and Slow Current-Decay Modes  
■ Serial Interface Controls Chip Functions  
■ Synchronous Rectification for Low Power Dissipation  
■ Internal UVLO and Thermal-Shutdown Circuitry  
■ Crossover-Current Protection  
Load Supply Voltage, VBB .................. 50 V  
Output Current, IOUT........................ ±1.5 A  
Logic Supply Voltage, VDD ................ 7.0 V  
Input Voltage, VIN .... -0.3 V to VDD + 0.3 V  
Sense Voltage, VS .......................... 0.55 V  
Reference Voltage, VREF .................. 5.5 V  
Package Power Dissipation (TA = 25°C), PD  
A3948SB ................................. 3.1 W*  
A3948SLB ............................... 1.6 W*  
Operating Temperature Range,  
TA ............................... -20°C to +85°C  
Junction Temperature,  
TJ ............................................ +150°C  
Storage Temperature Range,  
TS ............................. -55°C to +150°C  
Always order by complete part number:  
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.  
Part Number  
A3948SB  
Package  
RθJA  
RθJT  
24-pin batwing DIP  
24-lead batwing SOIC  
40°C/W  
77°C/W  
6°C/W  
6°C/W  
* Per SEMI G42-88 Specification.  
A3948SLB  
1234567...12

中文翻译

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