The NCP51403 is a source/sink Double Data Rate (DDR) termination regulator specifically designed for low input voltage and low−noise systems where space is a key consideration. The NCP51403 maintains a fast transient response and only requires a minimum output capacitance of 20 uF. The NCP51403 supports a remote sensing function and all power requirements for DDR VTT bus termination. The NCP51403 can also be used in low−power chipsets and graphics processor cores that require dynamically adjustable output voltages.

• Input Voltage Rails: Supports 2.5 V, 3.3 V and 5 V Rails
• PVCC Voltage Range: 1.1 to 3.5 V
• Integrated Power MOSFETs
• Fast Load−Transient Response
• PGOOD − Logic output pin to Monitor VTT Regulation
• VRI − Reference Input Allows for Flexible Input Tracking Either Directly or Through Resistor Divider
• EN − Logic input pin for Shutdown mode
• Built−in Under Voltage Lockout and Over Current Limit