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Texas Instruments LM5013/LM5013-Q1 Non-Synchronous Buck Converters are designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. A minimum controllable on-time of 50ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48V nominal input to low-voltage rails for reduced system complexity and solution cost. The LM5013/LM5013-Q1 operates during input voltage dips as low as 6V, at nearly 100% duty cycle if needed, making it an excellent choice for high-performance 48V battery automotive applications and MHEV/EV systems.
With integrated high-side power MOSFET, the LM5013/LM5013-Q1 delivers up to 3.5A of output current. A constant on-time (COT) control architecture provides a nearly constant switching frequency with excellent load and line transient response. Additional features of the LM5013/LM5013-Q1 include ultra-low IQ operation for high light-load efficiency, innovative peak overcurrent protection, integrated VCC bias supply and bootstrap diode, precision enable and input UVLO, and thermal shutdown protection with automatic recovery. An open-drain PGOOD indicator provides sequencing, fault reporting, and output voltage monitoring.
The Texas Instruments LM5013/LM5013-Q1 is available in an 8-pin SO PowerPAD™ package. The 1.27mm pin pitch provides adequate spacing for high-voltage applications. The Texas Instruments LM5013-Q1 devices are AEC-Q100 qualified for automotive applications.
