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RT9205 Datasheet(PDF) 1 Page - Richtek Technology Corporation

Part No. RT9205
Description  Dual Regulators - Synchronous Buck PWM DC-DC and Linear Controller
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9205 Datasheet(HTML) 1 Page - Richtek Technology Corporation

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Preliminary
RT9205/A
DS9205/A-03 May 2003
www.richtek.com
1
Dual Regulators - Synchronous Buck PWM DC-DC and
Linear Controller
General Description
The RT9205/A is a dual-output power controllers
designed for high performance graphics cards and
personal
computers.
The
IC
integrates
a
synchronous buck controller, a linear controller and
protection functions into a small 14-pin package.
The RT9205/A uses an internal compensated voltage
mode PWM control for simplying design. An internal
0.8V reference allows the output voltage to be
precisely regulated to meet low output voltage
requirement. A fixed 300kHz oscillation frequency
reduces the component size for saving board area.
The RT9205/A also features over voltage protection
(OVP) and under voltage lock-out (UVLO).
Applications
PC Motherboard
Cable Modems, Set-Top-Box, and XDSL Modems
DSP and Core Communications Processor Supplies
Memory Power Supplies
Personal Computer Peripherals
Industrial Power Supplies
5V Input DC-DC Regulators
Low Voltage Distributed Power Supplies
Graphic Cards
Features
Operates at 5V
0.8V Internal Reference
Drives Two N-channel MOSFET
Voltage Mode PWM Control
Fast Transient Response
Fixed 300kHz Oscillator Frequency
Dynamic 0~100% Duty Cycle
Internal PWM Loop Compensation
Internal Soft-Start
Adaptive Non-overlapping Gate Driver
Over-voltage Protection Uses Lower MOSFET
Pin Configurations
Part Number
Pin Configurations
RT9205/ACS
(Plastic SOP-14)
TOP VIEW
Ordering Information
RT9205/A
LGATE
PGND
GND
VCC
1
2
3
4
14
13
12
11
UGATE
BOOT
NC
NC
DRV
FBL
NC
5
6
7
10
9
8
NC
FB
NC
Operating Temperature Range
C : Commercial Standard
Package Type
S : SOP-14
UVP : Hiccup Mode
UVP : Latch Mode


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