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http://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Flm5168″>View Datasheet
Texas Instruments LM5168/LM5168-Q1/LM5169/LM5169-Q1 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 LM5169/LM5169-Q1 operates during input voltage dips as low as 6V, at nearly 100% duty cycle if needed, making it an excellent choice for wide input supply range industrial and high-cell count battery pack applications.
With integrated high-side and low-side power MOSFETs, the LM5169/LM5169-Q1 delivers up to 0.65A of output current, and the Texas Instruments LM5168/LM5168-Q1 delivers up to 0.3A of output current. A constant on-time (COT) control architecture provides a nearly constant switching frequency with excellent load and line transient response. The LM5169/LM5169-Q1 is available in FPWM or auto mode operation. FPWM mode provides forced CCM operation across the entire load range, supporting an isolated fly-buck operation. The auto mode enables ultra-low IQ and diode emulation mode operation for high light-load efficiency.
