Datasheet> 器件分类 > 其他集成电路（IC）> 信号电路> A3977ELP

文档预览

A3977ELP: 产品描述Stepper Motor Controller, 2.5A, NMOS, PDSO28, EXPOSED PAD, TSSOP-28; 产品类别其他集成电路（IC）信号电路; 文件大小250KB，共18页; 制造商Allegro; 官网地址http://www.allegromicro.com/

下载文档详细参数选型对比全文预览

A3977ELP概述

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

A3977ELP规格参数

参数名称	属性值
是否Rohs认证	不符合
零件包装代码	SSOP
包装说明	HTSSOP, TSSOP28,.25
针数	28
Reach Compliance Code	compliant
ECCN代码	EAR99
模拟集成电路 - 其他类型	STEPPER MOTOR CONTROLLER
JESD-30 代码	R-PDSO-G28
JESD-609代码	e0
长度	9.7 mm
功能数量	1
端子数量	28
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	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）	240
电源	3.3/5,35 V
认证状态	Not Qualified
座面最大高度	1.2 mm
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	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	30
宽度	4.4 mm
Base Number Matches	1

文档预览

下载PDF文档

全文
预览

3977

A3977xED

(PLCC)

LOAD

SUPPLY

SENSE

SLEEP

OUT

ENABLE

HOME

GND

DIR

OUT

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.

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.

Internal synchronous-rectification control circuitry is provided to

improve power dissipation during PWM operation.

Dwg. PP-075-1

Data Sheet

26184.22

BB1

PFD

GND

REG

STEP

CHARGE PUMP

PWM

TIMER

GND

REF

÷8

TRANSLATOR

& CONTROL LOGIC

REG

LOGIC

SUPPLY

BB2

GND

LOAD

SUPPLY

SENSE

RESET

OUT

GND

ABSOLUTE MAXIMUM RATINGS

at T

= +25

Load Supply Voltage, V

.............

35 V

Output Current, I

OUT

..................

2.5 A

Logic Supply Voltage, V

...........

7.0 V

Logic Input Voltage Range, V

>30 ns) ....

-0.3 V to V

+ 0.3 V

<30 ns) ..........

-1 V to V

+ 1 V

Sense Voltage, V

SENSE

................

0.5 V

Reference Voltage, V

REF

.................

Package Power Dissipation,

................................

See page 3

Operating Temperature Range, T

(A3977Ex) ..............

-40

C to +85

(A3977Kx) ............

-40

C to +125

(A3977Sx) ..............

-20

C to +85

Junction Temperature, T

.........

+150

Storage Temperature Range,

.........................

-55

C to +150

* 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.

Internal circuit protection includes thermal shutdown with hyster-

esis, under-voltage lockout (UVLO) and crossover-current protection.

Special power-up sequencing is not required.

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).

FEATURES

±2.5

A, 35 V Output Rating

Low r

DS(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

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

A3977ELP相似产品对比

	A3977ELP	A3977EED	A3977EEDTR	A3977ELPTR
描述	Stepper Motor Controller, 2.5A, NMOS, PDSO28, EXPOSED PAD, TSSOP-28	Stepper Motor Controller, 2.5A, NMOS, PQCC44, COPPER BATWING, PLASTIC, LCC-44	Stepper Motor Controller, 2.5A, NMOS, PQCC44, COPPER BATWING, PLASTIC, LCC-44	Stepper Motor Controller, 2.5A, NMOS, PDSO28, EXPOSED PAD, TSSOP-28
是否Rohs认证	不符合	不符合	不符合	不符合
零件包装代码	SSOP	LCC	LCC	SSOP
包装说明	HTSSOP, TSSOP28,.25	QCCJ, LDCC44,.7SQ	QCCJ, LDCC44,.7SQ	HTSSOP, TSSOP28,.25
针数	28	44	44	28
Reach Compliance Code	compliant	compliant	compliant	compliant
ECCN代码	EAR99	EAR99	EAR99	EAR99
模拟集成电路 - 其他类型	STEPPER MOTOR CONTROLLER	STEPPER MOTOR CONTROLLER	STEPPER MOTOR CONTROLLER	STEPPER MOTOR CONTROLLER
JESD-30 代码	R-PDSO-G28	S-PQCC-J44	S-PQCC-J44	R-PDSO-G28
JESD-609代码	e0	e0	e0	e0
长度	9.7 mm	16.5862 mm	16.5862 mm	9.7 mm
功能数量	1	1	1	1
端子数量	28	44	44	28
最高工作温度	85 °C	85 °C	85 °C	85 °C
最低工作温度	-40 °C	-40 °C	-40 °C	-40 °C
最大输出电流	2.5 A	2.5 A	2.5 A	2.5 A
封装主体材料	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
封装代码	HTSSOP	QCCJ	QCCJ	HTSSOP
封装等效代码	TSSOP28,.25	LDCC44,.7SQ	LDCC44,.7SQ	TSSOP28,.25
封装形状	RECTANGULAR	SQUARE	SQUARE	RECTANGULAR
封装形式	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	CHIP CARRIER	CHIP CARRIER	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）	240	240	240	240
电源	3.3/5,35 V	3.3/5,35 V	3.3/5,35 V	3.3/5,35 V
认证状态	Not Qualified	Not Qualified	Not Qualified	Not Qualified
座面最大高度	1.2 mm	4.57 mm	4.57 mm	1.2 mm
最大供电电压 (Vsup)	5.5 V	5.5 V	5.5 V	5.5 V
最小供电电压 (Vsup)	3 V	3 V	3 V	3 V
标称供电电压 (Vsup)	5 V	5 V	5 V	5 V
表面贴装	YES	YES	YES	YES
技术	NMOS	NMOS	NMOS	NMOS
温度等级	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
端子面层	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
端子形式	GULL WING	J BEND	J BEND	GULL WING
端子节距	0.65 mm	1.27 mm	1.27 mm	0.65 mm
端子位置	DUAL	QUAD	QUAD	DUAL
处于峰值回流温度下的最长时间	30	30	30	30
宽度	4.4 mm	16.5862 mm	16.5862 mm	4.4 mm
Base Number Matches	1	1	1	-

A3977ELP

A3977ELP概述

A3977ELP规格参数

文档预览

A3977ELP相似产品对比

推荐资源