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UR6515CL-SH2-T [UTC]

2A DDR BUS TERMINATION REGULATOR; 2A DDR总线终端稳压器
UR6515CL-SH2-T
型号： UR6515CL-SH2-T
厂家： Unisonic Technologies    Unisonic Technologies
描述：

2A DDR BUS TERMINATION REGULATOR
2A DDR总线终端稳压器

总线通信 稳压器 驱动程序和接口 接口集成电路 双倍数据速率
文件： 总8页 (文件大小：661K)
中文：  中文翻译
下载：  下载PDF数据表文档文件
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UNISONIC TECHNOLOGIES CO., LTD  
UR6515C  
LINEAR INTEGRATED CIRCUIT  
2A DDR BUS TERMINATION  
REGULATOR  
„
DESCRIPTION  
The UR6515C is a linear regulator providing up to 2A transient  
peak current sourcing and sinking capability for DDR SDRAM bus  
terminator applications while regulating an output voltage to within  
40mV. It contains a high speed operational amplifier which provides  
fast load transient response and only requires 10uF of ceramic  
output capacitance.  
The UR6515C output termination voltage tracks the reference  
voltage applied at VREF pin. A resistor divider connected to VIN, GND  
and VREF pins is used to force the reference voltage to VREF pin.  
Additional features include current limiting protection and thermal  
shutdown protection.  
„
FEATURES  
*DDR1/ DDR2/DDR3 termination voltage applications  
*Sink and Source Current  
2A Contious Current  
*Adjustable output voltage by external resistors  
*Integrated power MOS devices  
*Suspend to RAM(STR) functionality  
*Current Limiting Protection  
*Thermal Shutdown Protection  
*Cost-effective and easy to use  
„
ORDERING INFORMATION  
Ordering Number  
Package  
Packing  
Lead Free  
Halogen Free  
UR6515CL-SH2-R  
UR6515CL-SH2-T  
UR6515CG-SH2-R  
UR6515CG-SH2-T  
HSOP-8  
HSOP-8  
Tape Reel  
Tube  
www.unisonic.com.tw  
Copyright © 2012 Unisonic Technologies Co., Ltd  
1 of 8  
QW-R101-038.A  
UR6515C  
LINEAR INTEGRATED CIRCUIT  
„
PIN CONFIGURATIONS  
VIN  
GND  
VREF  
VOUT  
1
2
3
4
8
7
6
5
NC  
NC  
GND  
VCNTL  
NC  
„
PIN DESCRIPTION  
PIN NAME  
PIN TYPE  
PIN DESCRIPTION  
VCNTL  
GND  
VIN  
I
-
Power supply pin for the internal control circuits  
Ground pin  
I
Power supply pin for the VOUT output  
Reference voltage input and active-low shutdown control pin  
Output voltage pin  
VREF  
VOUT  
I
O
UNISONIC TECHNOLOGIES CO., LTD  
2 of 8  
QW-R101-038.A  
www.unisonic.com.tw  
UR6515C  
LINEAR INTEGRATED CIRCUIT  
„
BLOCK DIAGRAM  
UNISONIC TECHNOLOGIES CO., LTD  
3 of 8  
QW-R101-038.A  
www.unisonic.com.tw  
UR6515C  
LINEAR INTEGRATED CIRCUIT  
„
ABSOLUTE MAXIMUM RATING  
PARAMETER  
SYMBOL  
VCNTL  
VIN  
RATINGS  
+6  
UNIT  
V
VCNTL Control Voltage  
VIN Supply Voltage  
+6  
V
Power Dissipation (TA=25°C)  
Junction Temperature  
Storage Temperature  
PD  
1.33  
W
TJ  
125  
°C  
°C  
TSTG  
-65 ~ +150  
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.  
Absolute maximum ratings are stress ratings only and functional device operation is not implied.  
„
THERMAL DATA  
PARAMETER  
SYMBOL  
θJA  
RATINGS  
UNIT  
°C/W  
°C/W  
Junction to Ambient (Note 1)  
Junction to Case  
75  
28  
θJC  
Note: 1. θJA is measured in the natural convection at TA = 25°C on a high effective thermal conductivity test board of  
JEDEC 51-7 thermal measurement standard  
„
RECOMMENDED OPERATING CONDITIONS (Note 1)  
PARAMETER  
SYMBOL  
VCNTL  
VIN  
RATINGS  
5 or 3.3±5%  
2.5~1.5±3%  
1.25~0.75±3%  
-40~+125  
UNIT  
V
VCNTL Control Voltage  
VIN Supply Voltage  
VREF Input Voltage  
V
VREF  
TJ  
V
Junction Temperature  
°C  
Notes: 1. All voltage values are with respect to the network ground terminal unless otherwise noted.  
2. The VOUT tracks the VREF with additional voltage offset and load regulation.  
„
ELECTRICAL CHARACTERISTICS (TA=25°C, unless otherwise specified)  
(VIN=2.5V/1.8V/1.5V, VCNTL=3.3V, VREF=1.25V/0.9V/0.75V, COUT = 10µF (Ceramic))  
PARAMETER  
INPUT CURRENT  
SYMBOL  
TEST CONDITIONS  
IOUT =0A  
MIN  
TYP  
MAX UNIT  
Operation Current of VCNTL  
Standby Current  
ICNTL  
ISTB  
1
2.5  
90  
mA  
VREF<0.2V, RLOAD=180Ω  
50  
μA  
OUTPUT VOLTAGE (DDR/DDR II/DDR III)  
Output Voltage Offset (VREF-VOUT  
Load Regulation  
)
VOS  
IOUT =0A  
-20  
-20  
20  
20  
mV  
mV  
ΔVLOAD  
IOUT =±2A  
PROTECTION  
Current Limit  
ILIMIT  
TSD  
VIN=2.5V/1.8V/1.5V  
VCNTL=3.3V~5V  
VCNTL=3.3V~5V  
2.2  
A
Thermal Shutdown Temperature  
Thermal Shutdown Hysteresis  
VREF Shutdown  
125  
170  
35  
°C  
°C  
ΔTSD  
VIH  
VIL  
Enable  
0.6  
V
V
Shutdown Threshold  
Shutdown  
0.2  
UNISONIC TECHNOLOGIES CO., LTD  
4 of 8  
QW-R101-038.A  
www.unisonic.com.tw  
UR6515C  
LINEAR INTEGRATED CIRCUIT  
„
TYPICAL APPLICATIONS CIRCUITS  
R1=R2=100KΩ, COUT=10μF(Ceramic)+1000μF under the worst case testing condition  
CSS=1μF, CIN=470μF(Low ESR), CCNTL=47μF  
R2  
, VOUT track VREF  
VIN(V)  
VREF =  
R1 +R2  
UNISONIC TECHNOLOGIES CO., LTD  
5 of 8  
QW-R101-038.A  
www.unisonic.com.tw  
UR6515C  
LINEAR INTEGRATED CIRCUIT  
„
TYPICAL CHARACTERISTICS  
UNISONIC TECHNOLOGIES CO., LTD  
6 of 8  
QW-R101-038.A  
www.unisonic.com.tw  
UR6515C  
LINEAR INTEGRATED CIRCUIT  
„
TYPICAL CHARACTERISTICS(Cont.)  
Output Short Circuit Protection  
Output Short Circuit Protection  
Source  
Source  
Source  
VIN=2.5V, VCNTL=3.3V, VOUT=1.25V  
Sink  
VIN=2.5V, VCNTL=3.3V, VOUT=1.25V  
12  
10  
10  
8
8
6
4
6
4
2
2
0
0
Time (1ms/Div)  
Time (1ms/Div)  
Output Short Circuit Protection  
VIN=1.8V, VCNTL=3.3V, VOUT=0.9V  
Output Short Circuit Protection  
VIN=1.8V, VCNTL=3.3V, VOUT=0.9V  
Sink  
12  
12  
10  
8
10  
8
6
6
4
4
2
2
0
0
Time (1ms/Div)  
Time (1ms/Div)  
Output Short Circuit Protection  
Output Short Circuit Protection  
Sink  
VIN=1.5V, VCNTL=3.3V, VOUT=0.75V  
VIN=1.5V, VCNTL=3.3V, VOUT=0.75V  
12  
12  
10  
8
10  
8
6
6
4
4
2
0
2
0
Time (1ms/Div)  
Time (1ms/Div)  
UNISONIC TECHNOLOGIES CO., LTD  
7 of 8  
QW-R101-038.A  
www.unisonic.com.tw  
UR6515C  
LINEAR INTEGRATED CIRCUIT  
„
TYPICAL CHARACTERISTICS(Cont.)  
Output Voltage vs. Temperature  
Output Voltage vs. Temperature  
VIN=1.5V  
0.77  
0.765  
0.76  
0.92  
VIN=1.8V  
0.915  
0.91  
0.905  
0.9  
0.755  
0.75  
0.745  
0.895  
0.89  
0.74  
0
0
100  
50  
Temperature(°C)  
25  
Temperature(°C)  
75  
-50  
-25  
25  
75  
100 125  
-50  
-25  
50  
125  
Output Voltage vs. Temperature  
VIN=2.5V  
1.27  
1.265  
1.26  
1.255  
1.25  
1.245  
1.24  
50  
Temperature(°C)  
-50  
-25  
25  
75  
100 125  
0
UTC assumes no responsibility for equipment failures that result from using products at values that  
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or  
other parameters) listed in products specifications of any and all UTC products described or contained  
herein. UTC products are not designed for use in life support appliances, devices or systems where  
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in  
whole or in part is prohibited without the prior written consent of the copyright owner. The information  
presented in this document does not form part of any quotation or contract, is believed to be accurate  
and reliable and may be changed without notice.  
UNISONIC TECHNOLOGIES CO., LTD  
8 of 8  
QW-R101-038.A  
www.unisonic.com.tw  

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