RT9204 Datasheet, PDF (1/14 Pages) Richtek Technology Corporation – Dual Regulator - Standard Buck PWM DC-DC and Linear Power Controller

Preliminary
RT9204
Dual Regulator - Standard Buck PWM DC-DC and Linear
Power Controller
General Description
The RT9204 is a dual power controllers designed for
high performance graphics cards and computer
applications. The IC integrates a standard buck
controller, a linear regulator driver and protection
functions into a small 8-pin package.
The RT9204 uses a internal compensated voltage
mode PWM control for simple application design. An
internal 0.8V reference allows the output voltage to
be precisely regulated to low voltage requirement. A
fixed 600kHz oscillator reduce the component size for
saving board area.
The RT9204 protects the converter and regulator by
monitoring the output under voltage.
Applications
z Motherboard Power Regulation for Computers
z Subsystems Power Supplies
z Cable Modems, Set Top Box, and DSL Modems
z DSP and Core Communications processor
Supplies
z Memory Power Supplies
z Personal Computer Peripherals
z Industrial Power Supplies
z 5V-Input DC-DC Regulators
z Low Voltage Distributed Power Supplies
Features
z Operate from 5V
z 0.8V Internal Reference
z Voltage Mode PWM Control
z Fast Transient Response
z Fixed 600kHz Oscillator Frequency
z Full 0~100% Duty Cycle
z Internal Soft Start
z Internal PWM Loop Compensation
Pin Configurations
Part Number
Pin Configurations
RT9204CS
(Plastic SOP-8)
TOP VIEW
GND 1
VCC 2
DRV 3
FBL 4
8 UGATE
7 BOOT
6 SD
5 FB
Ordering Information
RT9204… …
Package type
S : SOP-8
Operating temperature range
C : Commercial standard
DS9204-00 February 2002
www.richtek-ic.com.tw
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