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| 型号： | A3967SLB-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DRIVER PWM FULL 24-SOIC |
| 标准包装： | 31 |
| 应用： | 步进电机驱动器 |
| 输出数： | 1 |
| 电流 - 输出： | ±750mA |
| 电压 - 负载： | 4.75 V ~ 30 V |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 管件 |
| 其它名称： | 620-1073 |
A3967
Microstepping Driver with Translator
Features and Benefits
? ±750 mA, 30 V output rating
? Satlington? sink drivers
? Automatic current-decay mode detection/selection
? 3.0 to 5.5 V logic supply voltage range
? Mixed, fast, and slow current-decay modes
? Internal UVLO and thermal shutdown circuitry
? Crossover-current protection
Package: 24-pin SOIC with internally
fused pins (suffix LB)
Not to scale
Description
The A3967 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 30 V and ±750 mA. The A3967 includes a fixed
off-time current regulator that has the ability to operate in slow,
fast, or mixed current-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
A3967. 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
A3967 interface is an ideal fit for applications where a complex
μ P is unavailable or over-burdened.
Internal circuit protection includes thermal shutdown with
hysteresis, under-voltage lockout (UVLO) and crossover-
current protection. Special power-up sequencing is not
required.
The A3967 is supplied in a 24-pin SOIC, which is lead (Pb)
free with 100% matte tin leadframe plating. Four pins are
fused internally for enhanced thermal dissipation. The pins
are at ground potential and need no insulation.
Functional Block Diagram
LOGIC
SUPPLY
LOAD
SUPPLY
V CC
REF.
SUPPLY
14
UVLO
AND
FAULT
DETECT
V BB1
REF
1
÷8
DAC
SENSE
20
RC 1
+
-
OUT 1A
23
3
PWM LATCH
BLANKING
MIXED DECAY
PWM TIMER
16
21
OUT 1B
STEP 10
DIR 11
RESET 22
MS 1 12
MS 2 13
3
SLEEP
ENABLE 15
V PF
17
5
SENSE 1
V BB2
OUT 2A
24
PFD
2
3
PWM TIMER
PWM LATCH
BLANKING
MIXED DECAY
9
4
OUT 2B
RC 2
DAC
+
-
6
7
18 19
8
SENSE 2
Dwg. FP-050-3A
26184.24H
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A3967SLB-T | 制造商:Allegro MicroSystems 功能描述:Motor Controller / Driver IC |
| A3967SLBTR | 功能描述:IC MOTOR DRIVER PWM FULL 24SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:直流电机驱动器，步进电机驱动器 评估套件:- 输出数:1 或 2 电流 - 输出:750mA 电压 - 负载:10 V ~ 40 V 电源电压:4.5 V ~ 5.5 V 工作温度:-20°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-BFSOP（0.295"，7.50mm 宽） 供应商设备封装:24-SOP 包装:Digi-Reel® 其它名称:MTS62C19A-HS105DKR |
| A3967SLBTR-T | 功能描述:IC MOTOR DRIVER PWM FULL 24SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:步进电机驱动器，1-2 相，2 相 评估套件:- 输出数:1 电流 - 输出:800mA 电压 - 负载:10 V ~ 28 V 电源电压:4.75 V ~ 5.25 V 工作温度:-20°C ~ 90°C 安装类型:表面贴装 封装/外壳:28-SOP + 2 翼片裸露焊盘 供应商设备封装:28-HSOPHC（15.2x7.9） 包装:剪切带 (CT) 其它名称:869-1268-1 |
| A3967SLBTR-T-CUT | 制造商:Allegro MicroSystems LLC 功能描述: |
| A3968 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Dual Full-Bridge PWM Motor Driver |
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