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參數(shù)資料
| 型號： | RT9209APS |
| 廠商： | Richtek Technology Corporation |
| 英文描述： | Synchronous Buck PWM DC-DC with Enable & PGOOD |
| 中文描述： | 同步降壓PWM直流與直流啟用 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 217K |
| 代理商： | RT9209APS |
RT9209/A
1
DS9209/A-08 March 2007
www.richtek.com
Features
z
Operates at 5V
z
0.8V Internal Reference
z
Drives Two N-MOSFET
z
Voltage Mode PWM Control
z
Fast Transient Response
z
Fixed 260kHz/400kHz Oscillator Frequency
z
Dynamic 0 to 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
z
RoHS Compliant and 100% Lead (Pb)-Free
Pin Configurations
Applications
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Motherboard Power Regulation for Computers
z
Subsystems Power Supplies
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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
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Low Voltage Distributed Power Supplies
Synchronous Buck PWM DC-DC with Enable & PGOOD
Ordering Information
RT9209/A
General Description
The RT9209/A is a single power supply PWM DC-DC
converter controller designed to drive N-MOSFET in a
synchronous buck topology. The IC integrates the control,
output adjustment, monitoring and protection functions into
a small 8-pin package.
The RT9209/A uses an 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 260kHz/
400kHz oscillator reduce the component size for saving
board area.
The RT9209/A future a enable control pin to shutdown PWM
switching and a 90% power good flag indicator. The FB
pin under voltage detection function monitor the output
short circuit which trigger a three time hiccup sequence
to latch off the chip function.
(TOP VIEW)
SOP-8
FB
SS
PGOOD
UGATE
GND
LGATE
VCC
BOOT
2
3
4
5
8
7
6
Note :
RichTek Pb-free and Green products are :
`
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
`
Suitable for use in SnPb or Pb-free soldering processes.
`
100%matte tin (Sn) plating.
Package Type
S : SOP-8
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
400kHz
260kHz
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| RT9209GS | Synchronous Buck PWM DC-DC with Enable & PGOOD |
| RT9209PS | Synchronous Buck PWM DC-DC with Enable & PGOOD |
| RT9210 | Dual 5V Synchronous Buck DC-DC PWM Controller for DDR Memory VDDQ and VTT Termination |
| RT9210GC | Dual 5V Synchronous Buck DC-DC PWM Controller for DDR Memory VDDQ and VTT Termination |
| RT9210GS | Dual 5V Synchronous Buck DC-DC PWM Controller for DDR Memory VDDQ and VTT Termination |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| RT9210GC | 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 |
| RT9210GS | 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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