A3971SLB

更新时间： 2024-01-04 09:45:56

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器接口集成电路光电二极管
页数	文件大小	规格书
8页	142K
描述
DUAL DMOS FULL-BRIDGE DRIVER

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技术参数
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A3971SLB 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	SOP,
针数：	24	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.87	Is Samacsys：	N
内置保护：	OVER CURRENT; THERMAL; UNDER VOLTAGE	接口集成电路类型：	FULL BRIDGE BASED PERIPHERAL DRIVER
JESD-30 代码：	R-PDSO-G24	JESD-609代码：	e0
长度：	15.4 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	输出电流流向：	SOURCE AND SINK
标称输出峰值电流：	5 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	NOT SPECIFIED
认证状态：	Not Qualified	座面最大高度：	2.65 mm
最大供电电压：	5.5 V	最小供电电压：	4.5 V
标称供电电压：	5 V	电源电压1-最大：	50 V
电源电压1-分钟：	10 V	表面贴装：	YES
技术：	NMOS	温度等级：	OTHER
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	7.5 mm
Base Number Matches：	1

A3971SLB 数据手册

3971

ADVANCE INFORMATION

(Subject to change without notice)

May 2, 2000

DUAL DMOS

FULL-BRIDGE DRIVER

Designed to interface between external PWM control logic and

inductive loads such as relays, solenoids, dc motors, or stepper motors,

each full bridge can operate with output currents to 2.5 A and operating

voltages to 50 V.

LOGIC

SUPPLY

VDD

CONNECTION

LOGIC

GROUND

23 PWM

Low r_DS(on)DMOS output drivers provide low power dissipation

during PWM operation. Internal charge pump circuitry is used to create

a boosted voltage to fully enhance the high-side DMOS switches.

OUT1A

LOAD

OUT2A

LOAD

SUPPLY

BB1

VBB2

19 GROUND

GROUND

Three TTL-compatible logic-input terminals per bridge allow flex-

ibility in configuring PWM control.

GROUND

SENSE

Internal circuit protection includes thermal shutdown with hysteresis,

and crossover-current protection. Special power -up sequencing is not

required.

16 OUT2B

OUT1B

S21

11 10

VCP

PWM

The A3971SLB is supplied in a 24-lead plastic SOIC with a copper

batwing tab. The power tab is at ground potential and needs no electri-

cal isolation.

13 CP2

CP1

CHARGE PUMP

Dwg. PP-069-2

ABSOLUTE MAXIMUM RATINGS

at T = +25°C

Load Supply Voltage, V_BB................ 50 V

Output Current, I_OUT

Transient (<500 ns) ................... 5 A

Logic Supply Voltage,

FEATURES

2.5 A Load Current Capability per Bridge

V_DD............................................ 7.0 V

Sense Voltage, V_SENSE...................... 0.5 V

Logic Input Voltage Range,

I Parallel Outputs for 5 A Load-Current Capability

I Low r_DS(on)Outputs

V_IN.................. -0.3 V to V_DD+ 0.3 V

High-Side Gate Voltage ........... V_BB+ 8 V

Package Power Dissipation,

P_D............................................. 2.2 W

Operating Temperature Range,

Typically 325 mΩ source, 175 mΩ sink

I Synchronous Rectification via Control Logic

I Internal Undervoltage Monitor

T_A............................. -20°C to +85°C

Junction Temperature, T_J............. +150°C

Storage Temperature Range,

I Crossover-Current Protection

I Source Connections for External Current Sensing

I Thermal Shutdown Circuitry

T_S........................... -55°C to +150°C

Output duty cycle, ambient temperature, and

heat sinking may limit current rating. Under

any set of conditions, do not exceed the

specified current rating or a junction tempera-

ture of 150 °C.

Always order by complete part number: A3971SLB .

12 3 4 5 6 7 8

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