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參數(shù)資料
| 型號： | RT9209 |
| 英文描述： | Step-down DC/DC Converter |
| 中文描述： | 降壓直流/直流轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 315K |
| 代理商： | RT9209 |
Preliminary
RT9203/A
DS9203/A-04 May 2003
www.richtek.com
1
Dual Regulators - Synchronous Buck PWM DC-DC and
Linear Controller
General Description
The RT9203/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 8-pin package.
The RT9203/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 RT9203/A also features over voltage protection
(OVP) and under voltage lock-out (UVLO).
Applications
z
PC Motherboard
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
z
Graphic Cards
Features
z
Operates at 5V
z
0.8V Internal Reference
z
Drives Two N-channel MOSFET
z
Voltage Mode PWM Control
z
Fast Transient Response
z
Fixed 300kHz Oscillator Frequency
z
Dynamic 0~100% Duty Cycle
z
Internal PWM Loop Compensation
z
Internal Soft-Start
z
Adaptive Non-overlapping Gate Driver
z
Over-voltage Protection Uses Lower MOSFET
Pin Configurations
Part Number
Pin Configurations
RT9203/ACS
(Plastic SOP-8)
TOP VIEW
Ordering Information
RT9203/A
BOOT
UGATE
GND
LGATE
1
2
3
4
8
7
6
5
FB
FBL
DRV
VCC
Operating Temperature Range
C : Commercial Standard
Package Type
S : SOP-8
UVP : Hiccup Mode
UVP : Latch Mode
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| RT9231A | |
| RT9237A | |
| RT9241B | |
| RT9241A | |
| RT9261 | Step-up DC/DC Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RT9209AGS | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:Synchronous Buck PWM DC-DC with Enable & PGOOD |
| RT9209APS | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:Synchronous Buck PWM DC-DC with Enable & PGOOD |
| RT9209GS | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:Synchronous Buck PWM DC-DC with Enable & PGOOD |
| RT9209PS | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:Synchronous Buck PWM DC-DC with Enable & PGOOD |
| RT9210 | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:Dual 5V Synchronous Buck DC-DC PWM Controller for DDR Memory VDDQ and VTT Termination |
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