Current amplifying integrated circuit SA57

voltagehybridDSP

The SA57 is a low cost, 60V, pulse width modulation (PWM) motor driver IC capable of delivering up to 17A of output current. As a monolithic, single package solution, the SA57 provides a high level of integration for driving brush-type DC motors in the market space between lower current devices and higher cost drivers operating on 400+ voltage supplies. A seamless digital interface is possible with the SA57AHU by partnering with either a MCU or DSP. Individual control of both the top side and the bottom side output FETs is allowed via direct signals from the processor. Thermal and short circuit monitoring for the SA57 is provided, which generates fault signals for the microcontroller to take appropriate action. Additionally, cycle-by-cycle current limit offers user programmable hardware protection independent of the microcontroller. Output current is measured using an innovative low loss technique. Housed in a 44-pin HSOP package with integrated heat slug, the SA57 provides balance between excellent thermal performance with the advantages of a low-profile surface mount package.