SS6117A-18CYTR [SSC]
Regulator;
| 型号： | SS6117A-18CYTR |
| 厂家： | 
SILICON STANDARD CORP. |
| 描述： | Regulator |
| 文件： | 总7页 (文件大小：128K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SS6117A
1A Low-Dropout Positive Regulator
FEATURES
DESCRIPTION
Dropout voltage 1.3V at 1A output current.
The SS6117A is a low-dropout three-terminal
regulator with 1A output current capability. The
output voltage is adjustable with the use of a
resistor divider or fixed at 1.8V, 2.5V, 2.85V, 3.3V,
or 5V. Dropout voltage is guaranteed to be a
maximum of 1.5V at the maximum output
current. The low dropout voltage and fast transient
response make this device ideal for low voltage
microprocessor applications. The current-limiting
and thermal protection reduce the risk of an
overload condition creating excessive junction
temperatures.
Fast transient response.
Line regulation typically at 0.015%.
Load regulation typically at 0.1%.
Current-limiting and thermal protection.
Adjustable output voltage or fixed at 1.8V, 2.5V,
2.85V, 3.3V, 5V.
Standard 3-pin power packages.
APPLICATIONS
Post Regulator for Switching Supplies.
Active SCSI Termination.
Battery Chargers.
Constant-Current Regulators.
Motherboard Clock Supplies.
TYPICAL APPLICATION CIRCUIT
2
VREF=VOUT - VADJ=1.25V (typ.)
VOUT=VREF x (1+RF2/RF1)+ IADJ x RF2
IADJ=55mA (typ.)
3
SS6117A
VIN
5V
VOUT
3.3V
ADJ
1
VREF
RF1
125W
1%
+
+
C1
10mF
C2
10mF
RF2
205W
1%
(1) C1 is needed if the device is physically far
from the filter capacitors.
(2) C2 is required for stability.
Adjustable Voltage Regulator
2
3
SS6117A-33
V
5V
IN
V
3.3V
OUT
1
+
+
C1
10mF
C2
10mF
GND
Fixed Voltage Regulator
Rev.2.02 4/26/2004
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SS6117A
ORDERING INFORMATION
PIN CONFIGURATION
SS6117A-XXCXXX
Packing
TO-252-3
TOP VIEW
TR: Tapeandreel
TB: Tubes
1
2
3
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
Package type
E: TO-252-3
M: TO-263-3
T: TO-220
TO-263-3
TOP VIEW
Y: SOT-223
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
1
2
3
Output voltage
Default: Adjustable
18: 1.8V
25: 2.5V
28: 2.85V
33: 3.3V
TO-220
FRONT VIEW
50: 5.0V
1: ADJ (GND)
2: VOUT (TAB)
1
2
3
Example: SS6117A -25CETR
3: VIN
2.5V version in TO-252 package
shipped on tape and reel
SOT-223
TOP VIEW
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
1
2
3
ABSOLUTE MAXIMUM RATINGS
VIN pin to ADJ/GND pin ...........................…….......…….......……………...................... 7V
Operating Junction Temperature Range ..................………...................... 0°C ~ 125°C
Power Dissipation …………………………………………………………….Internally Limited
Thermal Resistance (Junction to Case)
TO-220 ………........……...…………... 3°C /W
TO-263 …....……....…………………….3°C /W
SOT-223 …....……..………..………..15°C /W
TO-252 ……………………..………..12.5°C /W
Thermal Resistance (Junction to Ambient) TO-220 …....……....……….…….…… 50°C/W
(Assumes no ambient airflow, no heatsink) TO-263 ….....…….....………...………..60°C/W
SOT-223 …………………..…………..155°C/W
TO-252
...............................…………................. - 65°C ~ 150°C
Lead Temperature (Soldering) 10 sec. .....................………............………...….......260°C
……………………………..100°C/W
Storage Temperature Range
Rev.2.02 4/26/2004
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SS6117A
ELECTRICAL CHARACTERISTICS
(VIN=5V, TJ=25°C, IO=10mA, unless otherwise
specified)
TEST CONDITIONS
PARAMETER
MIN.
TYP.
MAX. UNIT
TJ=25°C
1.238
1.25
1.262
0°C£TJ£125°C
2.65V£VIN£7V
10mA£IO£1A
Reference Voltage
V
1.225
1.25
1.275
SS6117A-18, VIN=3.3V
SS6117A-25, VIN=5V
SS6117A-28, VIN=5V
SS6117A-33, VIN=5V
SS6117A-50, VIN=7V
SS6117A
1.78
2.47
2.82
3.26
4.95
1.80
2.50
2.85
3.30
5.00
1.82
2.53
2.88
3.33
Output Voltage
V
5.05
0°C£TJ£125°C
VOUT
0.98V
OUT
1.02V
OUT
2.65V£VIN£7V
10mA£IO£1A
2.65£VIN£7V, TJ=25°C
0°C£TJ£125°C
0.015
0.035
0.1
0.2
0.2
0.3
0.4
Line Regulation
Load Regulation
%VOUT
%VOUT
TJ=25°C, IO=10mA ~1A
0°C£TJ£125°C
DVOUT, DVREF=1%, IO=1A
0°C£TJ£125°C
0°C£TJ£125°C
2.65£VIN£7V
0.2
Dropout Voltage
Current Limit
1.3
1.5
V
A
1
Adjusted Pin Current (IADJ
)
10mA£IO£1A
55
120
5
mA
0°C£TJ£125°C
2.65£VIN£7V
Adjusted Pin Current Change
(DIADJ
10mA£IO£1A
0.2
0.5
mA
)
0°C£TJ£125°C
IO=0.5A
% VOUT
Temperature Stability
0°C£TJ£125°C
0°C£TJ£125°C
0°C£TJ£125°C
5
10
14
mA
mA
Minimum Load Current ( Adj. )
10
Quiescent Current ( Fixed Version)
10Hz£f£10KHz
0.003
%VOUT
RMS Output Noise (% of VOUT
Ripple Rejection Ratio
)
120Hz input ripple
60
72
dB
COUT=25mF
Rev.2.02 4/26/2004
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SS6117A
TYPICAL PERFORMANCE CHARACTERISTICS
0.1
50
0
0.05
0
-0.05
--50
VIN=5V
IN=1mF
COUT=10 F (Tantalum)
COUT=10mF (Tantalum)
-0.1
--100
C
VOUT=3.3V
m
V
OUT=3.3V
7.0
6.0
0.4A
0.1A
0
10
20
30
40
50
0
40
80
120
160
200
m
m
Time ( S)
Time ( S)
Fig. 1 Load Transient Response
Fig. 2 Line Transient Response
1.26
1.24
1.22
1.20
1.18
1.16
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0
1
2
3
4
5
0
200
400
600
800
1000
Output Current (mA)
Fig. 3 Dropout Voltage (VOUT=3.3V)
Differential Voltage (V)
Fig. 4 Minimum Operating Current
5
4
3
2
1
0
T =125°C
J
T =125°C
J
T =0°C
J
1
2
3
4
5
6
7
8
9
Input/Output Differential (V)
Fig. 5 Minimum Load Current (Adjustable Version)
Rev.2.02 4/26/2004
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SS6117A
BLOCK DIAGRAM
VIN
Current Amp.
+
GM
-
+
VREF
1.25V
Thermal
Limit
Current
Limit
55 A
m
VOUT
For fixed voltage
device
GND
ADJ
PIN DESCRIPTIONS
ADJ
-
Providing VREF=1.25V (typ.) for adjustable VOUT. VREF=VOUT-VADJ and IADJ=55mA (typ.)
(GND PIN- Power ground.)
VOUT -
VIN
Adjustable output voltage.
Power Input.
-
Rev.2.02 4/26/2004
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SS6117A
PHYSICAL DIMENSIONS
l SOT-223
SYMBOL
MIN
0.02
0.60
2.90
0.24
6.30
3.30
MAX
0.12
0.80
3.15
0.35
6.80
3.70
D
A1
B
B1
°
° ±
13
3
B1
C
E
H
e
A1
D
B
E
3 (PLCS)
° ±
°
3
13
e
2.30 (TYP.)
H
6.70
7.30
C
0.91 MIN
°
0
°
~ 10
° ±
13
°
3
SOT-223 Marking
l
Part No.
SS6117ACY
Marking
BS17
BS18
BS25
BS28
BS33
BS50
SS6117A-18CY
SS6117A-25CY
SS6117A-28CY
SS6117A-33CY
SS6117A-50CY
l TO-263 (unit: mm)
SYMBOL
MIN
4.06
0.50
MAX
4.83
1.00
E
A
A
b
C2
L2
b2
C
1.14
-
1.40
0.7
D
L
c2
1.14
1.40
D
E
8.63
9.65
9.66
L1
10.29
e
2.54 (TYP.)
e
L
14.60
2.28
-
15.88
2.80
1.40
b2
C
L1
L2
b
Rev.2.02 4/26/2004
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SS6117A
PHYSICAL DIMENSIONS (cont.)
l TO-220 (unit: mm)
A
SYMBOL
MIN
3.56
14.23
9.66
2.29
0.50
-
MAX
4.82
E
A
D
F
16.51
10.66
2.79
E
D
e
e1
e2
F
1.15
1.10
0.51
2.04
12.70
1.39
J1
L
2.92
14.73
L
e1
J1
e
e2
l TO-252 (unit: mm)
E
C1
SYMBOL
MIN
2.19
1.02
0.64
5.21
0.46
5.33
6.35
MAX
2.38
1.27
0.88
5.46
0.58
5.59
6.73
b2
A
A
A1
b
b2
C1
D
D
H
E
L
e
2.28 (TYP.)
e
H
9.40
0.51
10.42
-
b
A1
L
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without limitation enhancement in reliability, functionality or design. No license is granted, whether expressly or by implication, in relation to
the use of any products described herein or to the use of any information provided herein, under any patent or other intellectual property rights of
Silicon Standard Corporation or any third parties.
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