A3979SLP-T

更新时间： 2024-11-08 22:38:47

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器
页数	文件大小	规格书
14页	330K
描述
Microstepping DMOS Driver with Translator

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技术参数
数据手册
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A3979SLP-T 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
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：	5.32	其他特性：	ALSO REQUIRES 8V TO 35V VBB SUPPLY
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：	2.5 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：	3.3/5,35 V	认证状态：	Not Qualified
座面最大高度：	1.2 mm	子类别：	Motion Control Electronics
最大供电电压 (Vsup)：	5.5 V	最小供电电压 (Vsup)：	3 V
标称供电电压 (Vsup)：	5 V	表面贴装：	YES
技术：	BCDMOS	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

A3979SLP-T 数据手册

A3979

Microstepping DMOS Driver with Translator

The A3979 is a complete microstepping motor driver with built-in

translator, designed as a pin-compatible replacement for the successful

A3977, with enhanced microstepping ( /16 step) precision. It is designed

Package LP, 28-pin TSSOP

with Exposed Thermal Pad

to operate bipolar stepper motors in full-, half-, quarter-, and sixteenth-

step modes, with an output drive capacity of up to 35 V and ±2.5 A. The

A3979 includes a fixed off-time current regulator that has the ability

to operate in Slow, Fast, or Mixed decay modes. This current-decay

control scheme results in reduced audible motor noise, increased step

accuracy, and reduced power dissipation.

VBB1

SENSE1

HOME

DIR

SLEEP

ENABLE

OUT1B

CP2

OUT1A

PFD

PWM

Timer

Charge

Pump

RC1

CP1

Translator

and

Control

Logic

The translator is the key to the easy implementation of the A3979. It

allows the simple input of one pulse on the STEP pin to drive the motor

one microstep, which can be either a full step, half, quarter, or sixteenth,

depending on the setting of the MS1 and MS2 logic inputs. There are no

phase-sequence tables, high-frequency control lines, or complex inter-

faces to program. The A3979 interface is an ideal fit for applications

where a complex microprocessor is unavailable or is overburdened.

AGND

REF

VCP

÷8

PGND

VREG

STEP

OUT2B

RESET

RC2

Reg

VDD

OUT2A

MS2

MS1

SENSE2 14

VBB2

Internal synchronous-rectification control circuitry is provided to

improve power dissipation during PWM operation. Internal circuit

protection includes: thermal shutdown with hysteresis, UVLO (under-

voltage lockout), and crossover-current protection. Special power-on

sequencing is not required.

AGND and PGND must be

connected together externally.

Approximate Scale 1:1

The A3979 is supplied in a low-profile (maximum height ≤ 1.20 mm),

28-pin TSSOP with exposed thermal pad. The package is available in a

lead (Pb) free version, with 100% matte tin leadframe plating.

ABSOLUTE MAXIMUM RATINGS

Load Supply Voltage,V_BB...................................35 V

Output Current, I_OUT......................................±2.5 A^*

Logic Supply Voltage, V_DD...............................7.0 V

FEATURES

Logic Input Voltage Range, V

ꢀ

±2.5 A, 35 V output rating

t_W> 30 ns........................–0.3 V to V_DD+ 0.3 V

Low R_DS(On)outputs: 0.28 Ω source, 0.22 Ω sink, typical

Automatic current decay mode detection/selection

3.0 to 5.5 V logic supply voltage range

Slow, Fast or Mixed current decay modes

Home output

Synchronous rectification for low power dissipation

Internal UVLO and thermal shutdown circuitry

Crossover-current protection

t_W< 30 ns..............................–1 V to V_DD+ 1 V

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

Reference Voltage, V_REF......................................V_DD

Package Power Dissipation, P_D.................See page 5

Operating Temperature Range

Ambient, T_A, Range S ................... –20°C to 85°C

Junction Temperature, T_J(MAX).....................150°C

Storage Temperature, 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.

Use the following complete part number when ordering:

Part Number

A3979SLP

Pb-free

–

Ambient, T_A(°C)

–20 to 85

A3979SLP-T

Yes

26184.23

12 3 4 5 6 7...14

中文翻译

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A3979SLP-T 替代型号

型号	品牌	替代类型	描述	数据表
A3977SLPTR-T	ALLEGRO	完全替代	Microstepping DMOS Driver with Translator
A3979SLPTR-T	ALLEGRO	完全替代	Microstepping DMOS Driver with Translator
A3977SLP-T	ALLEGRO	完全替代	MICROSTEPPING DMOS DRIVER WITH TRANSLATOR

与A3979SLP-T相关器件

型号	品牌	获取价格	描述	数据表
A3979SLPTR	ALLEGRO	获取价格	Stepper Motor Controller, 2.5A, BCDMOS, PDSO28, 1.2 MM HEIGHT, EXPOSED PAD, MO-153AET, TSS
A3979SLPTR-T	ALLEGRO	获取价格	Microstepping DMOS Driver with Translator
A397P	NJSEMI	获取价格	High Speed Fast Recovery Rectifier
A397PA	POWEREX	获取价格	Rectifier Diode, 1 Phase, 1 Element, 400A, 1100V V(RRM), Silicon, R62, 2 PIN
A397PA	NJSEMI	获取价格	High Speed Fast Recovery Rectifier
A397PB	POWEREX	获取价格	Rectifier Diode, 1 Phase, 1 Element, 400A, 1200V V(RRM), Silicon, R62, 2 PIN
A397PB	NJSEMI	获取价格	High Speed Fast Recovery Rectifier
A397PC	NJSEMI	获取价格	High Speed Fast Recovery Rectifier
A397PC	POWEREX	获取价格	Rectifier Diode, 1 Phase, 1 Element, 400A, 1300V V(RRM), Silicon, R62, 2 PIN
A397PD	POWEREX	获取价格	Rectifier Diode, 1 Phase, 1 Element, 400A, 1400V V(RRM), Silicon, R62, 2 PIN

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