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The 17531A is a monolithic dual H-Bridge power IC ideal for portable electronic applications containing bipolar step motors and/or brush DC-motors (e.g., cameras and disk drive head positioners).
The 17531A operates from 2.0 V to 8.6 V using the internal charge pump, with independent control of each H-Bridge via parallel MCU interface. The device features built-in shoot-through current protection and an undervoltage shutdown function.
The 17531A has four operating modes: Forward, Reverse, Brake, and Tri-Stated (High Impedance). The 17531A has a low total RDS(ON) of 1.2 Ω (max @ 25°C).
The 17531A efficiently drives many types of micromotors with low power dissipation owing to its low output resistance and high output slew rates. The H-Bridge outputs can be independently pulse width modulated (PWM.ed) at up to 200 kHz for speed/torque and current control.
Features
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Low Total RDS(ON) 0.8 Ω (Typ), 1.2 Ω (Max) @ 25°C
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Output Current 0.7 A (DC)
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Shoot-Through Current Protection Circuit
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PWM Control Input Frequency up to 200 kHz
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Built-In Charge Pump Circuit
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Low Power Consumption
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Undervoltage Detection and Shutdown Circuit
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Power Save Mode with Current Draw ≤ 2.0 µA
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Pb-Free Packaging Designated by Suffix Codes EV and EP
Product Specifications
| Power Output Load - Current - Typ (A)(IL) | 0.7 |
| Power Output Load - Number of Channels | 2 |
| Power Output Load - Drain-to-Source On Resistance - Typ (Ohm)(RDS(ON)) | 0.8 |
| Load Supply Voltage - Min (V) | 2 |
| Load Supply Voltage - Max (V) | 8.6 |
| Interface and Input Control | Parallel |
