A3959SB

更新时间： 2024-01-29 14:16:14

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器运动控制电子器件信号电路光电二极管电动机控制电机
页数	文件大小	规格书
12页	275K
描述
DMOS FULL-BRIDGE PWM MOTOR DRIVER

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技术参数
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A3959SB 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	TSSOP
包装说明：	HTSSOP, TSSOP28,.25	针数：	28
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	1.06
模拟集成电路 - 其他类型：	STEPPER MOTOR CONTROLLER	JESD-30 代码：	R-PDSO-G28
JESD-609代码：	e3	长度：	9.7 mm
湿度敏感等级：	2	功能数量：	1
端子数量：	28	最高工作温度：	85 °C
最低工作温度：	-20 °C	最大输出电流：	6 A
封装主体材料：	PLASTIC/EPOXY	封装代码：	HTSSOP
封装等效代码：	TSSOP28,.25	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	260
电源：	5 V	认证状态：	Not Qualified
座面最大高度：	1.2 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：	YES	技术：	NMOS
温度等级：	OTHER	端子面层：	Matte Tin (Sn)
端子形式：	GULL WING	端子节距：	0.65 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	40
宽度：	4.4 mm	Base Number Matches：	1

A3959SB 数据手册

3959

DMOS FULL-BRIDGE

PWM MOTOR DRIVER

FUNCTIONAL DESCRIPTION (continued)

Current Sensing. To minimize inaccuracies in sensing

the I_TRIPcurrent level, which may be caused by ground

trace IR drops, the sense resistor should have an

independent ground return to the ground terminal of the

device. For low-value sense resistors the IR drops in the

PCB sense resistor’s traces can be significant and should

be taken into account. The use of sockets should be

avoided as they can introduce variation in R_Sdue to their

contact resistance.

Layout. A star ground system located close to the driver

is recommended. The printed wiring board should use a

heavy ground plane. For optimum electrical and thermal

performance*, the driver should be soldered directly onto

the board. The ground side of R_Sshould have an indi-

vidual path to the ground terminals of the device. This

path should be as short as is possible physically and

should not have any other components connected to it. It

is recommended that a 0.1 µF capacitor be placed between

SENSE and ground as close to the device as possible; the

load supply terminal, V_BB, should be decoupled with an

electrolytic capacitor (> 47 µF is recommended) placed as

close to the device as is possible. On the 28-lead TSSOP

package, the copper ground plane located under the

exposed thermal pad is typically used as a star ground.

The maximum value of R_Sis given as R_S≤ 0.5/I_TRIP

where I_TRIP≤ 3.0 A.

Thermal Protection. Circuitry turns off all drivers

when the junction temperature reaches 165°C typically. It

is intended only to protect the device from failures due to

excessive junction temperatures and should not imply that

output short circuits are permitted. Thermal shutdown has

a hysteresis of approximately 15°C.

* The thermal resistance, R_θJA, and absolute maximum

allowable package power dissipation specified on page 1

is measured on a typical two-sided PCB with one square

inch copper ground area on each side. With minimal

copper on a single-sided PCB (worst-case), the ‘B’

package R_θJAis 40°C/W, ‘LB’ is 77°C/W, and ‘LP’ is

80°C/W. See also, Application Note 29501.5, Improving

Batwing Power Dissipation.

SUFFIX 'B', RθJA = 26°C/W

SUFFIX 'LP', RθJA = 28°C/W

SUFFIX 'LB', RθJA = 35°C/W

MULTI-LAYER HIGH-K BOARD

For specification purposes, the multi-layer high-K board

performance graphed here is per JEDEC Standard

JESD51.

The products described here are manufactured under one or more

U.S. patents or U.S. patents pending.

Allegro MicroSystems, Inc. reserves the right to make, from time to

time, such departures from the detail specifications as may be

required to permit improvements in the performance, reliability, or

manufacturability of its products. Before placing an order, the user is

cautioned to verify that the information being relied upon is current.

SUFFIX 'B', RθJA = 38°C/W

SUFFIX 'LP', RθJA = 40°C/W

SUFFIX 'LB', RθJA = 50°C/W

DOUBLE-SIDED BOARD,

1 SQ. IN. COPPER EA. SIDE

Allegro products are not authorized for use as critical components

in life-support devices or systems without express written approval.

100

125

150

TEMPERATURE IN C

The information included herein is believed to be accurate and

reliable. However, Allegro MicroSystems, Inc. assumes no responsi-

bility for its use; nor for any infringement of patents or other rights of

third parties which may result from its use.

Dwg. GP-049-6

www.allegromicro.com

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与A3959SB相关器件

型号	品牌	描述	获取价格	数据表
A3959SB-T	ALLEGRO	DMOS FULL-BRIDGE PWM MOTOR DRIVER	获取价格
A3959SLB	ALLEGRO	DMOS FULL-BRIDGE PWM MOTOR DRIVER	获取价格
A3959SLB-T	ALLEGRO	DMOS FULL-BRIDGE PWM MOTOR DRIVER	获取价格
A3959SLBTR-T	ALLEGRO	Stepper Motor Controller, 6A, NMOS, PDSO24, LEAD FREE, MS-013AD, SOIC-24	获取价格
A3959SLB-TTR	ALLEGRO	暂无描述	获取价格
A3959SLP	ALLEGRO	DMOS FULL-BRIDGE PWM MOTOR DRIVER	获取价格

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