The SA57AHU-FH is a low cost, 60 V, pulse width modulation (PWM) motor driver IC capable of delivering up to 17 A of output current. As a monolithic, single-package solution, the SA57AHU-FH 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-FH 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 SA57AHU-FH 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.
The SA57AHU-FH is built using a multi-technology process that allows CMOS logic con¬trol and complementary DMOS output power devices on the same IC. Use of P-channel high side FETs en¬ables the device’s 60 V operation without the need for bootstrap or charge pump circuitry. Housed in a 44-pin HSOP package with integrated heat slug, the SA57AHU-FH provides balance between excellent thermal performance with the advantages of a low pro¬file surface mount package.
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| Part | Output Current MAX (A) | Supply Voltage MAX (V) | Switching Frequency (kHz) | Power Dissipation MAX (W) |  Int. Power MAX (W) |
|---|---|---|---|---|---|
| SA57 | 17 | 60 | 100 | 17 | 100 |
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