P6885
The P6885 device is a 28-V, 3-A non-synchronous buck converter that integrates a low RDS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode feature is automatically activated. Furthermore, the 1-μA shutdown supply-current allows the device to be used in battery-powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input under voltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current-limit scheme, frequency fold back and thermal shutdown protect the device and the load in the event of an overload condition. The P6885 device is available in an 8-pin SOIC package and 8-pin SO Power PAD package that have been internally optimized to improve thermal performance.
产品特点:
1. 3.5 to 28-V Input Voltage Range
2. Adjustable Output Voltage Down to 0.8 V
3. Integrated 80-mΩ High-Side MOSFET Supports up to 3-A Continuous Output Current
4. High Efficiency at Light Loads With a Pulse Skipping Eco-mode™
5. Fixed 570 kHz Switching Frequency
6. Typical 1-μA Shutdown Quiescent Current
7. Adjustable Slow-Start Limits Inrush Currents
8. Programmable UVLO Threshold
9. Overvoltage Transient Protection
10. Cycle-by-Cycle Current Limit, Frequency Fold Back, and Thermal Shutdown Protection
11. SOIC8 Package or Thermally Enhanced SOIC8 Power PAD™ Package
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