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A3977KLP-T: 产品描述Stepper Motor Controller, 2.5A, PDSO28, LEAD FREE, EXPOSED PAD, TSSOP-28; 产品类别其他集成电路（IC）信号电路; 文件大小618KB，共17页; 制造商Allegro; 官网地址http://www.allegromicro.com/; 标准

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A3977KLP-T概述

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

A3977KLP-T规格参数

参数名称	属性值
是否Rohs认证	符合
厂商名称	Allegro
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	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	125 °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）	260
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
温度等级	AUTOMOTIVE
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

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A3977

Microstepping DMOS Driver with Translator

FEATURES AND BENEFITS

•

±2.5 A, 35 V output rating

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

Mixed, fast, and slow current decay modes

Home output

Synchronous rectification for low power dissipation

Internal UVLO and thermal shutdown circuitry

Crossover-current protection

DESCRIPTION

The A3977 is a complete microstepping motor driver, with

built-in translator. It is 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. Simply inputting one pulse on the STEP input drives the

motor one step (two logic inputs determine if it is a full-, half-,

quarter-, or eighth-step). 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 microprocessor is unavailable or over-burdened.

Internal synchronous-rectification control circuitry is provided

to improve power dissipation during PWM operation.

Internal circuit protection includes thermal shutdown with

hysteresis, undervoltage lockout (UVLO) and crossover-current

protection. Special power-up sequencing is not required.

The A3977 is supplied in a thin (<1.2 mm), 28-pin TSSOP

with an exposed thermal pad (suffix LP). The A3977 is a lead

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

Package: 28-pin TSSOP (suffix LP) with

Exposed Thermal Pad

Not to scale

Pin-out Diagram

A3977-DS, Rev. 12

A3977KLP-T相似产品对比

	A3977KLP-T	A3977SLPTR-T	A3977SLP-T	A3977SLP	A3977SLPTR	A3977SED	A3977KLP
描述	Stepper Motor Controller, 2.5A, PDSO28, LEAD FREE, EXPOSED PAD, TSSOP-28	Stepper Motor Controller, 2.5A, NMOS, PDSO28, TSSOP-28	Stepper Motor Controller, 2.5A, NMOS, PDSO28, LEAD FREE, MO-153AET, TSSOP-28	Stepper Motor Controller, 2.5A, NMOS, PDSO28, EXPOSED PAD, TSSOP-28	Stepper Motor Controller, 2.5A, NMOS, PDSO28, EXPOSED PAD, TSSOP-28	Stepper Motor Controller, 2.5A, NMOS, PQCC44, BATWING, PLASTIC, LCC-44	Stepper Motor Controller, 2.5A, NMOS, PDSO28, EXPOSED PAD, TSSOP-28
是否Rohs认证	符合	符合	符合	不符合	不符合	不符合	不符合
零件包装代码	SSOP	TSSOP	TSSOP	SSOP	SSOP	LCC	SSOP
包装说明	HTSSOP, TSSOP28,.25	HTSSOP, TSSOP28,.25	HTSSOP, TSSOP28,.25	HTSSOP, TSSOP28,.25	HTSSOP, TSSOP28,.25	QCCJ, LDCC44,.7SQ	HTSSOP, TSSOP28,.25
针数	28	28	28	28	28	44	28
Reach Compliance Code	compliant	compliant	compliant	compliant	compliant	compliant	compliant
ECCN代码	EAR99	EAR99	EAR99	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	STEPPER MOTOR CONTROLLER	STEPPER MOTOR CONTROLLER	STEPPER MOTOR CONTROLLER
JESD-30 代码	R-PDSO-G28	R-PDSO-G28	R-PDSO-G28	R-PDSO-G28	R-PDSO-G28	S-PQCC-J44	R-PDSO-G28
长度	9.7 mm	9.7 mm	9.7 mm	9.7 mm	9.7 mm	16.585 mm	9.7 mm
功能数量	1	1	1	1	1	1	1
端子数量	28	28	28	28	28	44	28
最高工作温度	125 °C	85 °C	85 °C	85 °C	85 °C	85 °C	125 °C
最低工作温度	-40 °C	-20 °C	-20 °C	-20 °C	-20 °C	-20 °C	-40 °C
最大输出电流	2.5 A	2.5 A	2.5 A	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	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
封装代码	HTSSOP	HTSSOP	HTSSOP	HTSSOP	HTSSOP	QCCJ	HTSSOP
封装等效代码	TSSOP28,.25	TSSOP28,.25	TSSOP28,.25	TSSOP28,.25	TSSOP28,.25	LDCC44,.7SQ	TSSOP28,.25
封装形状	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	SQUARE	RECTANGULAR
封装形式	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	CHIP CARRIER	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）	260	260	260	240	240	NOT SPECIFIED	240
电源	3.3/5,35 V	3.3/5,35 V	3.3/5,35 V	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	Not Qualified	Not Qualified	Not Qualified
座面最大高度	1.2 mm	1.2 mm	1.2 mm	1.2 mm	1.2 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	5.5 V	5.5 V	5.5 V
最小供电电压 (Vsup)	3 V	3 V	3 V	3 V	3 V	3 V	3 V
标称供电电压 (Vsup)	5 V	5 V	5 V	5 V	5 V	5 V	5 V
表面贴装	YES	YES	YES	YES	YES	YES	YES
温度等级	AUTOMOTIVE	OTHER	OTHER	OTHER	OTHER	OTHER	AUTOMOTIVE
端子形式	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	J BEND	GULL WING
端子节距	0.65 mm	0.65 mm	0.65 mm	0.65 mm	0.65 mm	1.27 mm	0.65 mm
端子位置	DUAL	DUAL	DUAL	DUAL	DUAL	QUAD	DUAL
处于峰值回流温度下的最长时间	40	40	40	30	30	NOT SPECIFIED	30
宽度	4.4 mm	4.4 mm	4.4 mm	4.4 mm	4.4 mm	16.585 mm	4.4 mm
JESD-609代码	e3	e3	e3	e0	e0	-	e0
端子面层	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	-	Tin/Lead (Sn/Pb)
技术	-	NMOS	NMOS	NMOS	NMOS	NMOS	NMOS
Base Number Matches	-	1	1	1	1	1	1

A3977KLP-T

A3977KLP-T概述

A3977KLP-T规格参数

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