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부품번호 | CYT9174 기능 |
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기능 | 2.0A Bus Termination Regulator | ||
제조업체 | CYT | ||
로고 | |||
CYT9174
Description
Features
The CYT9174 regulator is designed to convert ¾ Support Both DDR 1 (1.25VTT) and DDR 2
voltage supplies ranging from 1.6V to 6V into a
(0.9VTT) Requirements
desired output voltage, which is adjusted by two ¾ SOP-8 Packages
external voltage divider resistors. The regulator is ¾ Capable of Sourcing and Sinking Current 2.0A
capable of sourcing or sinking up to 2.0A of current ¾ Current-limiting Protection
while regulating an output voltage to within 2% ¾ Thermal Protection
(DDR 1 or DDR 2) or less.
¾ Current-shoot-through protection
The CYT9174, used in conjunction with series ¾ Integrated Power MOSFETs
termination resistors, provides an excellent voltage ¾ Generates Termination Voltages for SSTL-2
source for active termination schemes of high ¾ High Accuracy Output Voltage at Full-Load
speed transmission lines as those seen in high ¾ Adjustable Vout by External Resistors
speed memory buses and distributed back-plane ¾ Minimum External Components
designs. The voltage output of the regulator can be ¾ Shutdown for Standby or Suspend Mode
used as a termination voltage for DDR SDRAM.
Operation with High-impedance Output
Current limits in both sourcing and sinking
mode, plus on-chip thermal shutdown make the
circuit tolerant of the output fault conditions.
www.DataSheet4U.com
Application
¾ DDR Memory Termination
¾ Active Termination Buses
Pin Configuration
¾ Supply Splitter
U
Block Diagram
Pin Description
Pin Name
Pin function
VIN
GND
Power Input
Ground
VCNTL
REFEN
Gate Drive Voltage
Reference Voltage input and
Chip Enable
VOUT
Output Voltage
VCNTL
VIN
REFEN
Current
Limiting Sensor
Thermal
CNTL
VOUT
GND
All contents are subject to change without prior notice
1
Application Diagram
CYT9174
R1 = R2 = 100KΩ, RTT = 50Ω/33Ω/25Ω
COUT, min = 10µF(Ceramic) + 1000µF under the worst case testing condition
RDUMMY = 1KΩ as for VOUT discharge when VIN is not present but VCNTL is present
CSS = 1µF, CIN = 470µF(Low ESR), CCNTL = 47µF
All contents are subject to change without prior notice
4
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부품번호 | 상세설명 및 기능 | 제조사 |
CYT9174 | 2.0A Bus Termination Regulator | CYT |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |