CXDR7577AMP High Accuracy Output Voltage at Full-Load Output Adjustment by Two External Resistors Built-in Soft-start Function Shutdown for Suspend to RAM Functionality with High-Impedance Outpu
目录
1.产品概述 2.产品特点
3.应用范围 4.下载产品资料PDF文档
5.产品封装图</span> 6.电路原理图</span>
7.功能概述 8.相关产品
一,产品概述(General Description) ![]()
The CXDR7577AMP is a simple, cost-effective and high-speed linear regulator designed to generate
termination voltage in double data rate (DDR) memory system to comply with the JEDEC SSTL_2 and
SSTL_18 or other specific interfaces such as HSTL,SCSI-2 and SCSI-3 etc. devices requirements. The
regulator is cJTMAable of actively sinking or sourcing up to 2.5A while regulating an output voltage to
within 40mV.The output termination voltage cab be tightly regulated to track 1/2VDDQ by two external
voltage divider resistors or the desired output voltage can be pro-grammed by externally forcing the
REFEN pin voltage.
The CXDR7577AMP also incorporates a high-speed differential amplifier to provide ultra-fast response in
line/load transient. Other features include extremely low initial offset voltage, excellent load regulation, current
limiting in bi-directions and on-chip thermal shut-down protection.Built-in softstart function avoids a
misoperation by inrush current.
The CXDR7577AMP are available in the ESOP-8surface mount packages.
二</span>.产品特点(Features)
Ideal for DDR-I, DDR-II and DDR-III VTT JTMAplications
Sink and Source up to 2.5Amp
Integrated Power MOSFETs
Generates Termination Voltage for SSTL_2, SSTL_18,
HSTL, SCSI-2 and SCSI-3 Interfaces.
High Accuracy Output Voltage at Full-Load
Output Adjustment by Two External Resistors
Built-in Soft-start Function
Shutdown for Suspend to RAM (STR) Functionality
with High-Impedance Output
Current Limiting Protection
On-Chip Thermal Protection
Available in ESOP-8 Packages
VIN and VCNTL Under Voltage Protection
RoHS Compliant and Halogen Free Product
三</span>,应用范围 (Applications)
Desktop PCs, Notebooks, and Workstations
GrJTMAhics Card Memory Termination
Set Top Boxes, Digital TVs, Printers
Embedded Systems
Active Termination Buses
DDR-I, DDR-II and DDR-III Memory Systems
四.技术规格书下载(产品PDF)</span>
需要详细的PDF规格书请扫一扫微信联系我们,还可以获得免费样品以及技术支持</span>!</span>

五,产品封装图 (Package)
六.电路原理图</span>
Input Voltage (VIN) ------------------------------------------ 6V
CNTL Pin Voltage (VCNTL) -------------------------------- 6V
Power Dissipation (PD) ------------------------------------ Internally Limited
Storage Temperature Range (TST) --------------------- -65 to +150°C
Lead Temperature (Soldering, 10sec.) ---------------260°C
Thermal Resistance from Junction to Case (R thjc)28°C/W
八,相关芯片选择指南 更多同类产品......
|
DDR Terminator |
||||||
|
Part Number |
Vin(typ) |
Vin(max) |
Max. Current (A) |
Current Limit (A) |
Quiescent |
Packages |
|
1.1/1.4/2.5 |
6 |
2.5 |
3 |
0.05 |
Exposed SO8 |
|
|
1.5/1.8/2.5 |
6 |
2.5 |
3.2 |
0.05 |
Exposed SO8 |
|
|
1.5/1.8/2.5 |
6 |
2 |
2.2 |
0.05 |
Exposed SO8 |
|
|
Reset IC |
|||||||
|
Part number |
Operation Voltage |
Open-Drain Output Duration |
Quiescent Current(uA) |
Reset Timer Delay |
Test Mode |
Package |
Operation |
|
1.65~5.5 |
400ms |
< 1 |
7.5s |
support |
SOT-26 |
-40 ~ 85 |
|
|
Return Dual Phase |
||||||||
|
Part no. |
Vref |
Max.Supply Voltage(s) |
Frequency (Typ.) |
2-Independent |
2-Phase |
Output Drive |
Package |
Demo board |
|
0.8V |
16V |
200~500KHz |
Yes |
Yes |
1A |
28-Pin TSSOP 28-Pin SOIC |
yes |
|
|
Dual Output + LDO Controller |
||||||||
|
Part no. |
Vref |
Max.Supply Voltage(s) |
Frequency (Typ.) |
LDO Controller |
2- Independent |
2-Phase (Current Sharing) |
Output Drive |
Package |
|
1.25V |
25V |
200KHz |
45mA |
Yes |
No |
0.5A |
16-pin TSSOP |
|

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