• D-CAP2? Mode Enables Fast Transient Response

• Low Output Ripple and Allows Ceramic Output Capacitor

• Wide VIN Input Voltage Range: 4.5 V to 18 V

• Output Voltage Range: 0.6 V to 7 V

• Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications –68 mΩ (High-Side) and 37 mΩ (Low-Side)

• High Efficiency, Less Than 10 μA at Shutdown

• High Initial Band-Gap Reference Accuracy

• Prebiased Soft Start

• 650-kHz Switching Frequency (fSW)

• Cycle-By-Cycle Overcurrent Limit

• Advanced Auto-Skip Eco-Mode? for High Efficiency at Light Load

• Power Good Output

• Fixed Soft Start: 1 ms

The TPS56528 device is an adaptive on-time D-CAP2&rade; mode synchronous buck converter. The TPS56528 enables system designers to complete the suite of various end-equipment power bus regulators with a cost-effective, low component count, low standby current solution. The main control loop for the TPS56528 uses the D-CAP2? mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and advanced Eco-Mode? operation at light loads. Advanced Eco-Mode? allows the TPS56528 to maintain high efficiency during lighter load conditions. The TPS56528 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.6 V and 7 V. The device also features a fixed 1-ms soft-start time and power good output. The TPS56528 is available in the 8-pin SO PowerPAD? package, and designed to operate from –40°C to 85°C.