NCP5214
2−in−1 Notebook DDR Power Controller
The NCP5214 2−in−1 Notebook DDR Power Controller is specifically designed ...
NCP5214
2−in−1 Notebook DDR Power Controller
The NCP5214 2−in−1 Notebook DDR Power Controller is specifically designed as a total power solution for notebook DDR memory system. This IC combines the efficiency of a PWM controller for the VDDQ supply with the simplicity of linear regulators for the VTT termination
voltage and the buffered low noise reference. This IC contains a synchronous PWM buck controller for driving two external NFETs to form the DDR memory supply
voltage (VDDQ). The DDR memory termination regulator output
voltage (VTT) and the buffered VREF are internally set to track at the half of VDDQ. An internal power good
voltage monitor tracks VDDQ output and notifies the user whether the VDDQ output is within target range. Protective features include soft−start circuitries, under
voltage monitoring of supply
voltage, VDDQ overcurrent protection, VDDQ over
voltage and under
voltage protections, and thermal shutdown. The IC is packaged in DFN−22.
Features
Incorporates VDDQ, VTT Regulator, Buffered VREF Adjustable VDDQ Output VTT and VREF Track VDDQ/2 Operates from Single 5.0 V Supply Supports VDDQ Conversion Rails from 4.5 V to 24 V Power−saving Mode for High Efficiency at Light Load Integrated Power FETs with VTT Regulator Sourcing/Sinking 1.5 A
DC and 2.4 A Peak Current
Requires Only 20 mF Ceramic Output Capacitor for VTT Buffered Low Noise 15 mA VREF Output All External Power
MOSFETs are N−channel <5.0 mA Current Consumption During Shutdown ...