A3980

更新时间： 2024-11-26 22:13:47

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器
页数	文件大小	规格书
18页	512K
描述
Automotive DMOS Microstepping Driver with Translator

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中文翻译

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A3980 数据手册

A3980

Automotive DMOS Microstepping Driver with Translator

The A3980 is a complete microstepping motor driver with built-in

translator for easy operation. It is designed to operate bipolar stepper

motors in full-, half-, eighth-, and sixteenth-step modes, at up to 35 V

and ±1 A. The A3980 includes a ﬁxed off-time current regulator which

has the ability to operate in slow, fast, or mixed decay modes. This

results in reduced audible motor noise, increased step accuracy, and

reduced power dissipation.

Package LP

SENSE1

VBB1

SLEEP

ENABLE

OUT1B

CP2

DIR

OUT1A

PFD

The translator is the key to the easy implementation of the A3980.

Simply inputting one pulse on the step input drives the motor one

microstep. There are no phase sequence tables, high frequency control

lines, or complex interfaces to program. The A3980 interface is an ideal

ﬁt for applications where a complex µP is unavailable or overburdened.

RC1

CP1

AGND

REF

VCP

PGND

VREG

STEP

OUT2B

FF2

RC2

Reg

Internal synchronous rectiﬁcation control circuitry is provided to

improve power dissipation during PWM operation.

VDD

OUT2A

MS2

Internal circuit protection includes: thermal shutdown with hysteresis,

overvoltage lockout (OVLO), undervoltage lockout (UVLO), and

crossover current protection. Special power-up sequencing is not

required. In addition, two diagnostic fault ﬂags provide indication of

shorts or opens on the motor windings.

MS1

FF1

SENSE2

VBB2

The A3980 is supplied in a low-proﬁle (1.1 mm) 28L TSSOP with

exposed thermal pad (part number sufﬁx LP).

Approximate Scale 1:1

FEATURES

ABSOLUTE MAXIMUM RATINGS

ꢀ

Typical application up to ±1 A, 35 V output rating

Low R_DS(ON)outputs, 0.67 Ω source, 0.54 Ω sink typical

Automatic current decay mode detection/selection

3.0 V to 5.5 V logic supply voltage range

Load Supply Voltage, 500 ms,V_BB.....................50 V

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

Logic Input Voltage

Mixed, fast, and slow current decay modes

_IN................................. –0.3 V to V_DD+ 0.3 V

Synchronous rectiﬁcation for low power dissipation

Internal OVLO, UVLO, and thermal shutdown circuitry

Crossover current protection

(t_W< 30 ns) ....................... –1.0 V to V_DD+ 1 V

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

Reference Voltage, V_REF………............. 0 V to V_DD

Package Power Dissipation (T_A= +25ºC), P_D

"High-K" PCB¹..............................R_θJA28ºC/W

Typical PCB²..................................R_θJA38ºC/W

Operating Temperature Range

Short to supply/ground and short/open load diagnostics

APPLICATIONS

ꢀ

Automotive stepper motors

Engine management

Headlamp positioning

Junction Temperature, T_J...........–40°C to +150°C

Storage Temperature, T_S..........–55°C to +150°C

¹Measured on a JEDEC-standard "High-K" 4-layer PCB.

²Measured on a typical two-sided PCB with 3 in.²copper

ground area.

Use the following complete part number when ordering:

Part Number

Package

Description

A3980KLP

28-pin, TSSOP

Exposed thermal pad

12 3 4 5 6 7...18

中文翻译

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与A3980相关器件

型号	品牌	获取价格	描述	数据表
A3980_06	ALLEGRO	获取价格	Automotive DMOS Microstepping Driver with Translator
A3980KLP	ALLEGRO	获取价格	Automotive DMOS Microstepping Driver with Translator
A3980KLP-T	ALLEGRO	获取价格	Automotive DMOS Microstepping Driver with Translator
A3980KLPTR	ALLEGRO	获取价格	Automotive DMOS Microstepping Driver with Translator
A3980KLPTR-T	ALLEGRO	获取价格	Automotive DMOS Microstepping Driver with Translator
A3981	ALLEGRO	获取价格	Automotive, Programmable Stepper Driver
A3981_V	ALLEGRO	获取价格	Automotive, Programmable Stepper Driver
A3981KLP-T	ALLEGRO	获取价格	暂无描述
A3981KLPTR-T	ALLEGRO	获取价格	Stepper Motor Controller, PDSO28, 9.70 X 4.40 MM, 1.20 MM HEIGHT, LEAD FREE, MO-153AET, TS
A3982	ALLEGRO	获取价格	DMOS Stepper Motor Driver with Translator

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