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A3977EED

更新时间： 2024-11-25 20:07:43
品牌 Logo 应用领域
急速微 - ALLEGRO 电动机控制
页数 文件大小 规格书
18页 250K
描述
Stepper Motor Controller, 2.5A, NMOS, PQCC44, COPPER BATWING, PLASTIC, LCC-44

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A3977EED 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：LCC包装说明：QCCJ, LDCC44,.7SQ
针数：44Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.79模拟集成电路 - 其他类型：STEPPER MOTOR CONTROLLER
JESD-30 代码：S-PQCC-J44JESD-609代码：e0
长度：16.5862 mm功能数量：1
端子数量：44最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：2.5 A
封装主体材料：PLASTIC/EPOXY封装代码：QCCJ
封装等效代码：LDCC44,.7SQ封装形状：SQUARE
封装形式：CHIP CARRIER峰值回流温度（摄氏度）：240
电源：3.3/5,35 V认证状态：Not Qualified
座面最大高度：4.57 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：NMOS温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：J BEND
端子节距：1.27 mm端子位置：QUAD
处于峰值回流温度下的最长时间：30宽度：16.5862 mm
Base Number Matches：1

A3977EED 数据手册

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3977  
MICROSTEPPING DMOS DRIVER  
WITH TRANSLATOR  
The A3977xED and A3977xLP are complete microstepping motor  
drivers with built-in translator. They are designed to operate bipolar  
stepper motors in full-, half-, quarter-, and eighth-step modes, with  
output drive capability of 35 V and ±2.5 A. The A3977 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.  
A3977xED  
(PLCC)  
V
BB1  
NC  
NC  
NC  
7
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
CP  
CP  
2
8
PFD  
1
9
RC1  
10  
11  
12  
13  
14  
15  
16  
17  
VCP  
GND  
GND  
GND  
REF  
GND  
GND  
GND  
The translator is the key to the easy implementation of the A3977.  
By simply inputting one pulse on the STEP input the motor will take  
one step (full, half, quarter, or eighth depending on two logic inputs).  
There are no phase-sequence tables, high-frequency control lines, or  
complex interfaces to program. The A3977 interface is an ideal fit for  
applications where a complex µP is unavailable or over-burdened.  
REG  
VREG  
÷8  
RC2  
STEP  
NC  
LOGIC  
SUPPLY  
VDD  
NC  
NC  
V
BB2  
Internal synchronous-rectification control circuitry is provided to  
improve power dissipation during PWM operation.  
Dwg. PP-075-1  
Internal circuit protection includes thermal shutdown with hyster-  
esis, under-voltage lockout (UVLO) and crossover-current protection.  
Special power-up sequencing is not required.  
ABSOLUTE MAXIMUM RATINGS  
at TA = +25°C  
Load Supply Voltage, VBB ............. 35 V  
Output Current, IOUT .................. ±2.5 A*  
Logic Supply Voltage, VDD ........... 7.0 V  
Logic Input Voltage Range, VIN  
The A3977 is supplied in a choice of two power packages, a 44-  
lead plastic PLCC with copper batwing tabs (suffix ED), and a thin  
(<1.2 mm), 28-lead TSSOP with an exposed thermal pad (suffix LP).  
(tw >30 ns) .... -0.3 V to VDD + 0.3 V  
(tw <30 ns) .......... -1 V to VDD + 1 V  
Sense Voltage, VSENSE ................ 0.5 V  
Reference Voltage, VREF................. VDD  
Package Power Dissipation,  
PD ................................ See page 3  
Operating Temperature Range, TA  
(A3977Ex).............. -40°C to +85°C  
(A3977Kx)............ -40°C to +125°C  
(A3977Sx).............. -20°C to +85°C  
Junction Temperature, TJ ......... +150°C  
Storage Temperature Range,  
FEATURES  
■ ±2.5 A, 35 V Output Rating  
■ Low rDS(on) Outputs, 0.45 Ω Source, 0.36 Ω Sink Typical  
■ Automatic Current Decay Mode Detection/Selection  
■ 3.0 V to 5.5 V Logic Supply Voltage Range  
■ Mixed, Fast, and Slow Current Decay Modes  
■ Home Output  
■ Synchronous Rectification for Low Power Dissipation  
■ Internal UVLO and Thermal Shutdown Circuitry  
■ Crossover-Current Protection  
TS ......................... -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.  
Always order by complete part number: the prefix ‘A’ + the basic part number  
(3977) + a suffix letter to indicate operating temperature range + a two-letter  
suffix to indicate package style, e.g., A3977SLP .  
1234567...18

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与A3977EED相关器件

型号 品牌 获取价格 描述 数据表
A3977EEDTR ALLEGRO

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 		Stepper Motor Controller, 2.5A, NMOS, PQCC44, COPPER BATWING, PLASTIC, LCC-44
A3977ELP ALLEGRO

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 		Stepper Motor Controller, 2.5A, NMOS, PDSO28, EXPOSED PAD, TSSOP-28
A3977ELPTR ALLEGRO

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 		Stepper Motor Controller, 2.5A, NMOS, PDSO28, EXPOSED PAD, TSSOP-28
A3977KED ALLEGRO

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 		MICROSTEPPING DMOS DRIVER WITH TRANSLATOR
A3977KED-T ALLEGRO

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 		Stepper Motor Controller, 2.5A, PQCC44, LEAD FREE, BATWING, PLASTIC, LCC-44
A3977KEDTR ALLEGRO

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 		暂无描述
A3977KEDTR-T ALLEGRO

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 		Stepper Motor Controller, 2.5A, NMOS, PQCC44, LEAD FREE, PLASTIC, MS-018AC, LCC-44
A3977KLP ALLEGRO

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 		MICROSTEPPING DMOS DRIVER WITH TRANSLATOR
A3977KLP-T ALLEGRO

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 		Stepper Motor Controller, 2.5A, PDSO28, LEAD FREE, EXPOSED PAD, TSSOP-28
A3977KLPTR ALLEGRO

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 		Stepper Motor Controller, 2.5A, NMOS, PDSO28, EXPOSED PAD, TSSOP-28

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