Controller IC Chip - MOSFET G5316RZ1D G5316 5316 chip for laptop - Integrated Laptop Chip (Code 1-CHIP0448)

Controller IC Chip - MOSFET G5316RZ1D G5316 5316 chip for laptop- Integrated portable calculator chip(SKU.1-CHIP0448)

Complete DDR2, DDR3 and DDR3L Memory Solution Synchronous Buck PWM Controller, 2A LDO, Buffered Reference

The G5316 is intended for DDR2, DDR3 and DDR3L memory systems. It integrates a synchronous buck PWM controller with a 2-A sink-source linear regulator and buffered reference. The PWM controller uses constant on-time control scheme to handle wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency. The G5316 achieves high effi-ciency at a reduced cost by eliminating the cur-rent-sense resistor found in traditional current-mode PWMs. Efficiency is further enhanced by an ability to drive very large synchronous rectifier MOSFETs. Sin-gle-stage buck conversion allows these devices to directly step down high-voltage batteries for the high-est possible efficiency. The 2A sink/source tracking termination regulator is specifically designed for low-cost/ low-external com-ponent count systems. The regulator contains a high speed operational amplifier that provides fast load transient response with only 10mF of ceramic output capacitance. The G5316 supports remote sensing functions and all features required to power the DDR2 /DDR3 /DDR3L VTT bus termination according to the JEDEC specification. In addition, the G5316 includes integrated sleep-state controls placing VTT in High-Z in S3 (suspend to RAM) and soft-off for VTT and VTTREF in S4/S5 (Shutdown). The G5316 provides OVP, UVP, over current and thermal shutdown protection functions and is available in a 20-pin 3X3 TQFN package.

•Synchronous Buck Controller (VDDQ)„Ultra-High Efficiency at Light and Heavy Load with Auto-skip Function „No Current-Sense Resistor (Lossless ILIMIT) „Quasi-PWM with 100ns Load-Step Response „0.7V to 1.8V Adjustable Output Range „3V to 28V Battery Input Range „0.8% Vref Accuracy „Supports Soft-off in S4/S5 States „Selectable 300k/400kHz Switching Frequency „OVP & UVP of VDDQ Output „Drives Large Synchronous-Rectifier FETs „Power-Good Indicator•2-A LDO (VTT), Buffered Reference (VTTREF)„VLDOIN Voltage Range: 1.2 V to 3.6 V „Requires Only 10mF Ceramic VTT Output Ca-pacitance „Supports High-Z in S3 and Soft-Off in S4/S5 „Integrated Divider Tracks 1/2 VDDQSNS for Both VTT and VTTREF „Remote Sensing (VTTSNS) „±20mV VTT and 0.8% VTTREF Accuracy „10mA Buffered Reference (VTTREF) „Built-In Soft-Start to Reduce the VLDOIN Surg-ing Current „Over Current Protection of VTT Output „Thermal Shutdown Protection

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