Controller IC Chip - RT8204GQV RT8204 ( A6= ) QFN14 Chip for laptop - Integrated Laptop Chip (Code 1-CHIP0942)

Controller IC Chip - RT8204GQV RT8204 ( A6= ) QFN14 Chip for laptop- Integrated portable calculator chip(SKU.1-CHIP0942)

The RT8204 PWM controller provides the high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high voltage batteries to generate low voltage CPU core, I/O, and chipset RAM supplies in notebook computers. The constant-on-time PWM control scheme handles wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency. The RT8204 achieves high efficiency at a reduced cost by eliminating the current sense resistor found in traditional current mode PWMs. Efficiency is further enhanced by its ability to drive very large synchronous rectifier MOSFETs. The buck conversion allows this device to directly step down high voltage batteries for the highest possible efficiency. The RT8204 is intended for CPU core, chipset, DRAM, or other low voltage supplies as low as 0.75V. A built-in LDO controller can drive an external N-MOSFET to provide a second output voltage from PWM output or other power source. The RT8204 can provide adjustable voltage down to 0.75V and maximum output voltage is depended on the selected MOSFET. The internal 0.75V reference voltage with ±1.5% accuracy provides tight regulation for the output voltage. The independent enable control, open drain power good indicator, under voltage protection and soft start make RT8204 to power the system friendly. The RT8204 is available in WQFN-16L 3x3 package.

PWM Controller ` Ultra-High Efficiency ` Resistor Programmable Current Limit by Low Side RDS(ON) Sense (Lossless Limit) or Sense Resistor (High Accuracy) ` Quick Load Step Response within 100ns ` 1% VOUT Accuracy Over Line and Load ` Adjustable 0.75V to 3.3V Output Range ` 3V to 26V Battery Input Range ` Resistor Programmable Frequency ` Over/Under Voltage Protection ` 2 Steps Current Limit During Soft-Start ` Drives Large Synchronous-Rectifier FETs ` Power Good Indicator z LDO Controller ` 1.5% Accuracy Over Line and Load ` Adjustabe Output Voltage Down to 0.75V ` Independent Enable and Power Good Indicator ` Drive N-MOSFETs within Rail to Rail Controller Voltage ` MLCC and POSCAP Stable z RoHS Compliant and 100% Lead (Pb)-Free

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