A3967SLB-T 电机驱动 原装正品 大量现货 低价出售
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A3967替换UCN5804
【产品名称】 A3967
【产品类别】 并行(转换器)
【产品用途】 微步(最高可达 8 步进/全步进)
【产品规格】 SOIC
【生产厂家】 ALLEGRO
【技术参数】 A3967 DATESHEET
【产品说明】 新产品,常备现货
A3967
Microstepping Driver with Translator
Features
±750 mA, 30 V Output Rating
Satlington® Sink Drivers
Automatic Current Decay Mode Detection/Selection
3.0 V to 5.5 V Logic Supply Voltage Range
Mixed, Fast, and Slow Current-Decay Modes
Internal UVLO and Thermal Shutdown Circuitry
Crossover-Current Protection
Description
The A3967SLB 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 A3967SLB 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 A3967SLB. 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 A3967SLB interface is an ideal fit for applications where a complex µP 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 A3967SLB is supplied in a 24-lead SOIC with copper batwing tabs. The tabs are at ground potential and need no insulation. A leadfree (100% matte tin leadframe) version is also available.
Functional Block Diagram
A3967SLB 24-lead SOIC No -20 °C to 85 °C
A3967SLB-T 24-lead SOIC Yes -20 °C to 85 °C
A3967SLBTR 24-lead SOIC No -20 °C to 85 °C
A3967SLBTR-T 24-lead SOIC Yes -20 °C to
发表时间:2009年5月6日12:09:11