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2022-09-24 23:16:53
NCP5203-2 in 1 DDR Power Controller
Description The NCP5203 2-in-1 DDR power controller is a complete power solution for an ACPI compliant high current DDR memory system. The IC incorporates a PWM controller to provide VDDQ efficiency and provides a linear regulator for a simple VTT termination voltage. The NCP5203 contains a synchronous PWM buck controller for driving two external NFETs to form the DDR memory supply voltage (VDDQ). of? 2.0 User adjustable VTT termination regulator with short circuit protection. An internal power supply monitors both the well-functioning VDDQ and Vtt outputs and signals in the event of a fault. Protection features include soft-start, under-voltage monitoring 5VDUAL, over-current protection (OCP) and thermal shutdown. The IC is packaged in an 18-pin QFN package.
Features • Supports DDR and DDR II I • Powered by VDDQ, VTT regulator • Operates on a single 5 V supply • VTT regulator includes integrated power FET sourcing/sinking up to 2.0 A • All external power MOSFETs are N-channel • Adjustable VDDQ • Adjustable VTT
• Corrected switching frequency in S0 of VDDQ to 300 kHz
• Fixed VDDQ switching frequency to 600 kHz in S3
• Soft-start protection provided by VDDQ
• Undervoltage monitoring 5VDUAL
• Short circuit protection provided for VDDQ and VTT
• Thermal Shutdown • Jacket with QFN-18
• Lead-free package available*
Typical Applications • DDR memory supply voltage and termination • Active termination tour bus (SSTL-2)