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A3967SLB-TTR

更新时间： 2024-01-22 08:04:09

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器转换器
页数	文件大小	规格书
16页	510K
描述
Stepper Motor Controller, 0.85A, PDSO24, LEAD FREE, SOIC-24

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A3967SLB-TTR 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	SOP, SOP24,.4	针数：	24
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.36
模拟集成电路 - 其他类型：	STEPPER MOTOR CONTROLLER	JESD-30 代码：	R-PDSO-G24
JESD-609代码：	e3	长度：	15.4 mm
功能数量：	1	端子数量：	24
最高工作温度：	85 °C	最低工作温度：	-20 °C
最大输出电流：	0.85 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP24,.4
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	3.3/5 V
认证状态：	Not Qualified	座面最大高度：	2.65 mm
子类别：	Motion Control Electronics	最大供电电流 (Isup)：	65 mA
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：	OTHER	端子面层：	Matte Tin (Sn)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	7.5 mm	Base Number Matches：	1

A3967SLB-TTR 数据手册

3967

MICROSTEPPING DRIVER

WITH TRANSLATOR

Functional Description (cont’d)

Percent Fast Decay Input (PFD). When a STEP

input signal commands a lower output current from the

previous step, it switches the output current decay to either

slow-, fast-, or mixed-decay depending on the voltage

level at the PFD input. If the voltage at the PFD input is

greater than 0.6V_CCthen slow-decay mode is selected. If

the voltage on the PFD input is less than 0.21V_CCthen

fast-decay mode is selected. Mixed decay is between

these two levels.

RC Blanking. In addition to the fixed off time of the

PWM control circuit, the C_Tcomponent sets the compara-

tor blanking time. This function blanks the output of the

current-sense comparator when the outputs are switched

by the internal current-control circuitry. The comparator

output is blanked to prevent false over-current detection

due to reverse recovery currents of the clamp diodes, and/

or switching transients related to the capacitance of the

load. The blank time t_BLANKcan be approximated by:

Mixed Decay Operation. If the voltage on the PFD

input is between 0.6V_CCand 0.21V_CC, the bridge will

operate in mixed-decay mode depending on the step

sequence (see figures). As the trip point is reached, the

device will go into fast-decay mode until the voltage on

the RC terminal decays to the voltage applied to the PFD

terminal. The time that the device operates in fast decay is

approximated by:

t_BLANK= 1400C_T

Enable Input (ENABLE). This active-low input

enables all of the outputs. When logic high the outputs are

disabled. Inputs to the translator (STEP, DIRECTION,

MS₁, MS₂) are all active independent of the ENABLE

input state.

Shutdown. In the event of a fault (excessive junction

temperature) the outputs of the device are disabled until

the fault condition is removed. At power up, and in the

event of low V_CC, the under-voltage lockout (UVLO)

circuit disables the drivers and resets the translator to the

home state.

t_FD= R_TC_TIn (0.6V_CC/V_PFD

)

After this fast decay portion, t_FD, the device will

switch to slow-decay mode for the remainder of the fixed

off-time period.

Sleep Mode (SLEEP). An active-low control input

used to minimize power consumption when not in use.

This disables much of the internal circuitry including the

outputs. A logic high allows normal operation and startup

of the device in the home position.

2.5

= +25°C

2.0

1.5

1.0

SOURCE DRIVER

Typical output saturation

voltages showing Satlington™

sink-driver operation.

0.5

SINK DRIVER

200

600

OUTPUT CURRENT IN MILLIAMPERES

300

400

500

700

800

Dwg. GP-064-4

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

1...3 4 567 8 9...16

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型号	品牌	描述	获取价格	数据表
A3968	ALLEGRO	Dual Full-Bridge PWM Motor Driver	获取价格
A3968SA	ALLEGRO	DUAL FULL-BRIDGE PWM MOTOR DRIVER WITH BRAKE	获取价格
A3968SLB	ALLEGRO	DUAL FULL-BRIDGE PWM MOTOR DRIVER WITH BRAKE	获取价格
A3968SLB-T	ALLEGRO	DUAL FULL-BRIDGE PWM MOTOR DRIVER WITH BRAKE	获取价格
A3968SLBTR	ALLEGRO	Stepper Motor Controller, 0.75A, BIPolar, PDSO16, PLASTIC, SOIC-16	获取价格
A3968SLBTR-T	ALLEGRO	DUAL FULL-BRIDGE PWM MOTOR DRIVER WITH BRAKE	获取价格

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