Vrm 8.5 Pwm And Triple Linear Power System ControllerThe RT9238 is a 4-in-one power controller optimized
for high-performance Microprocessor and computer
applications. The IC integrates a PWM Controller
triple linear controller as well as monitoring and
protection functions into a 28-pin SOP package. The
PWM Controller regulates the Microprocessor core
voltage with a synchronous buck converter. The first
linear controller supplies the computer systems
AGTL+ 1.2V bus power. The second linear controller
provides power for the 1.5V AGP bus and the 3rd
linear controller provides 1.8V power for the chipset
core voltage and/or cache memory circuits.
The RT9238 features an Intel VRM8.5 compatible,
TTL 5-bit programmable DAC that adjusts the core
voltage from 1.090V to 1.865V in 25mV steps. The 5-
bit DAC has a typical 1% tolerance. The linear
Regulators provide fixed output voltages of 1.2V
(VOUT2), 1.5V (VOUT3) and 1.8V (VOUT4) or user-
adjustable with an internal 1.265V reference. All the
three linear Regulators drive external N-MOSFET or
NPNs bipolar for the pass Transistor By Unkown
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RT9238 Pb-Free | RT9238 Cross Reference | RT9238 Schematic | RT9238 Distributor |
RT9238 Application Notes | RT9238 RoHS | RT9238 Circuits | RT9238 footprint |