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RT8128A/C
High Efficiency Synchronous Buck PWM Controller
General Description
Features
The RT8128A/C PWM controller provides high efficiency,
excellent transient response, and high DC output accuracy
needed for CPU core, I/O, and chipset RAM supplies in
notebook computers.
Richtek Mach ResponseTM technology is specifically
designed for providing 100ns “instant-on” response to
load transients while maintaining a relatively constant
switching frequency.
The RT8128A/C 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 at the highest
possible efficiency. The RT8128A/C is designed for CPU
core, chipset, DRAM, or other low voltage supplies as
low as 0.6V.
Richtek Mach ResponseTM Technology
VCC Input Range : 4.5V to 13.2V
VOUT Operating Range : 0.6V to 5V
Power Stage Input Range : 2.5V to 24V
Shutdown Current
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