UR6515L-TQ5-T [UTC]
Terminator Support Circuit, PSSO5, LEAD FREE, TO-263, 5 PIN;型号: | UR6515L-TQ5-T |
厂家: | Unisonic Technologies |
描述: | Terminator Support Circuit, PSSO5, LEAD FREE, TO-263, 5 PIN 接口集成电路 |
文件: | 总9页 (文件大小:511K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
UR6515A
LINEAR INTEGRATED CIRCUIT
3A DDR BUS TERMINATION
REGULATOR
DESCRIPTION
1
The UR6515A is a linear regulator providing up to 3A
TO-252-5
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 UR6515A 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.
1
TO-263-5
FEATURES
*DDR1/ DDR2 termination voltage applications
*Low output voltage offset within 20mV
*Source and sink 3A peak 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
Lead Free
Package
Packing
Halogen Free
UR6515L-TN5-R
UR6515L-TQ5-R
UR6515L-TQ5-T
UR6515G-TN5-R
UR6515G-TQ5-R
UR6515G-TQ5-T
TO-252-5
TO-263-5
TO-263-5
Tape Reel
Tape Reel
Tube
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Copyright © 2011 Unisonic Technologies Co., Ltd
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UR6515A
LINEAR INTEGRATED CIRCUIT
PIN CONFIGURATIONS
PIN DESCRIPTION
PIN NAME
PIN TYPE
PIN DESCRIPTION
Power supply pin for the VOUT output
Ground pin
VIN
GND
I
O
I
VCNTL
VREF
VOUT
Power supply pin for the internal control circuits
Reference voltage input and active-low shutdown control pin
Output voltage pin
I
O
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UR6515A
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
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UR6515A
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING (unless otherwise specified)
PARAMETER
SYMBOL
VCNTL
VIN
RATINGS
UNIT
V
VCNTL Control Voltage
VIN Supply Voltage
7
7
V
TO-252-5
TO-263-5
1.471
1.923
125
Power Dissipation (Ta=25°C)
PD
W
Junction Temperature
Storage Temperature
TJ
°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
RATINGS
UNIT
°C/W
TO-252-5
TO-263-5
TO-252-5
TO-263-5
68
52
8
Junction to Ambient (Note 1)
Junction to Case
θJA
θJC
°C/W
7.7
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 ± 5%
UNIT
V
VCNTL Control Voltage
VIN Supply Voltage
VREF Input Voltage
2.5~1.5 ± 3%
1.25~0.75 ± 3%
-40~+125
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, VCNTL=3.3V, VREF=1.25V/0.9V, COUT = 10µF (Ceramic))
PARAMETER
INPUT CURRENT
SYMBOL
TEST CONDITIONS
IOUT =0A
MIN
-20
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(DDR1/2)
PROTECTION
)
VOS
IOUT =0A
20
mV
%
ΔVLOAD
IOUT =±1.5A
0.8/1.2 2/3
Current Limit
ILIMIT
TSD
VIN=2.5V/1.8V
VCNTL=3.3V~5V
VCNTL=3.3V~5V
3
A
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
VREF Shutdown
125
150
50
°C
°C
ΔTSD
VIH
VIL
Enable
0.8
V
V
Shutdown Threshold
Shutdown
0.2
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UR6515A
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATIONS CIRCUITS
3.3V
VOUT
VOUT 5
VREF 4
VCNTL 3
GND 2
VIN 1
COUT
CSS
CCNTL
CIN
R1
R2
2.5V/1.8V
Enable
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
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UR6515A
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
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UR6515A
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS(Cont.)
Output Short Circuit Protection
Output Short Circuit Protection
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
Source
Sink
12
12
10
8
10
8
6
6
4
4
2
2
0
0
Time (1ms/Div)
Time (1ms/Div)
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UR6515A
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS(Cont.)
Output Voltage vs. Temperature
VIN=2.5V
Output Voltage vs. Temperature
1.27
1.265
1.26
0.92
VIN=1.8V
0.915
0.91
0.905
0.9
1.255
1.25
1.245
0.895
0.89
1.24
50
Temperature(°C)
-50
-25
25
75
100 125
0
0
50
Temperature(°C)
-50
-25
25
75
100 125
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UR6515A
LINEAR INTEGRATED CIRCUIT
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.
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