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A3958 - DMOS FULL-BRIDGE PWM MOTOR DRIVER

General Description

Serial Interface.

The A3958 is controlled via a 3-wire (clock, data, strobe) serial port.

The programmable functions allow maximum flexibility in configuring the PWM to the motor drive requirements.

Key Features

  • I I I I I I I ±2 A, 50 V Continuous Output Rating Low rDS(on) Outputs (270 mΩ, Typical) Programmable Mixed, Fast, and Slow Current-Decay Modes Serial Interface Controls Chip Functions Synchronous Rectification for Low Power Dissipation Internal UVLO and Thermal-Shutdown Circuitry Crossover-Current Protection Always order by complete part number: Part Number A3958SB A3958SLB Package 24-pin batwing DIP 24-lead batwing SOIC RθJA 40°C/W 56°C/W RθJT 6°C/W 6°C/W 3958 DMOS FULL-BRIDGE PWM MOTOR DRIVE.

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Full PDF Text Transcription for A3958 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for A3958. For precise diagrams, and layout, please refer to the original PDF.

3958 A3958SLB CP CP2 CP1 PHASE OSC GROUND GROUND LOGIC SUPPLY ENABLE DATA CLOCK STROBE CHARGE PUMP DMOS FULL-BRIDGE PWM MOTOR DRIVER Designed for pulse-width modulated (P...

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MOS FULL-BRIDGE PWM MOTOR DRIVER Designed for pulse-width modulated (PWM) current control of dc motors, the A3958SB and A3958SLB are capable of continuous output currents to ±2 A and operating voltages to 50 V. Internal fixed offtime PWM current-control timing circuitry can be programmed via a serial interface to operate in slow, fast, and mixed current-decay modes. PHASE and ENABLE input terminals are provided for use in controlling the speed and direction of a dc motor with externally applied PWM-control signals. The ENABLE input can be programmed via the serial port to PWM the bridge in fast or slow current decay.

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