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Notebook Computers
Notebook Computers
CPU/GPU Core Supply
Chipset/RAM Supply
Generic DC/DC Power Regulator
Meet Intel VCCSA Voltage Slew Rate
Meet Intel VCCSA Voltage Slew Rate
Built-in 1% Reference Voltage
2-Bit Programmable Output Voltage with Integrated Transition Support
Quick Load-Step Response within 100ns
4700ppm/°C Programmable Current Limit by Low Side RDS(ON) Sensing
4.5V to 26V Battery Input Range
Internal Ramp Current Limit Soft-Start Control
Drives Large Synchronous Rectifier FETs
Integrated Boost Switch
Over/Under Voltage Protection
Thermal Shutdown
Power Good Indicator
RoHS Compliant and Halogen Free
High Efficiency Single Synchronous Buck PWM Controller
The RT8241D PWM controller provides 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 RT8241D supports on chip voltage programming function between 0.675V and ,0.9V by controlling GX digital inputs.,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 RT8241D 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 and enter diode emulation mode at light load condition. The buck ,conversion allows this device to directly step down high voltage batteries at ,the highest possible efficiency. The RT8241D is intended for CPU core, chipset, ,DRAM, or other low voltage supplies as low as 0.675V.,The RT8241D is available in a WQFN-12L 2x2 package.
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