SS6117AG
1A Low-Dropout Positive Regulator
FEATURES
Dropout voltage 1.3V at 1A output current.
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.
DESCRIPTION
The SS6117AG 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 that an
overload condition might create excessive junction
temperatures.
Pb-free; RoHS-compliant
packages
APPLICATIONS
Active SCSI termination.
Battery chargers.
Constant-current regulators.
Post regulator for switching supplies.
TYPICAL APPLICATION CIRCUIT
3
V
IN
5V
1 ADJ
C1 +
10µF
V
REF
SS6117AG
2
V
OUT
3.3V
RF1
125Ω +
1%
C2
RF2
10µF
205Ω
1%
V
REF
=V
OUT
- V
ADJ
=1.25V (typ.)
V
OUT
=V
REF
x (1+RF2/RF1)+ I
ADJ
x RF2
I
ADJ
=55µA (typ.)
(1) C1 is needed if the device is mounted
far from the filter capacitors.
(2) C2 is required for stability.
Adjustable Voltage Regulator
3
V
IN
5V
C1
10µF
+
2
V
OUT
3.3V
+
C2
10µF
GND
SS6117A-33G
1
Fixed Voltage Regulator
8/16/2006 Rev.3.01
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SS6117AG
ORDERING INFORMATION
SS6117A-xxGx xx
Packing
TR: Tape and reel
TB: Tubes
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
PIN CONFIGURATION
TO-252-3
TOP VIEW
1
2
3
Package type
GE: TO-252-3
GM: TO-263-3
GT: TO-220
GY: SOT-223
TO-263-3
TOP VIEW
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
1
2
3
Output voltage
Absent:
18:
25:
28:
33:
50:
Adjustable
1.8V
2.5V
2.85V
3.3V
5.0V
TO-220
FRONT VIEW
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
1
2
3
Example: SS6117A-25GE TR
2.5V version in TO-252-3 package
shipped on tape and reel
SS6117AGM TR
Adjustable version in TO-263-3 package
shipped on tape and reel
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
SOT-223
TOP VIEW
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)
(assuming no ambient airflow, no heatsink)
TO-220 …....……....……….…….…… 50°C/W
TO-263 ….....…….....………...………..60°C/W
SOT-223 …………………..…………..155°C/W
TO-252
……………………………..100°C/W
Storage temperature range
..................................…………................. - 65°C ~ 150°C
.......................………............………...….......260°C
Lead temperature (soldering) 10 sec.
8/16/2006 Rev.3.01
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SS6117AG
ELECTRICAL CHARACTERISTICS
(V
IN
=5V, T
J
=25°C, I
o
=10mA, unless otherwise specified)
PARAMETER
TEST CONDITIONS
T
J
=25°C
Reference voltage
0°C≤T
J
≤125°C
2.65V≤V
IN
≤7V
10mA≤Io
≤1A
SS6117A-18G, V
IN
=3.3V
SS6117A-25G, V
IN
=5V
SS6117A-28G, V
IN
=5V
SS6117A-33G, V
IN
=5V
Output voltage
SS6117A-50G, V
IN
=7V
SS6117AG
0°C≤T
J
≤125°C
2.65V≤V
IN
≤7V
10mA≤I
O
≤1A
Line regulation
2.65≤V
IN
≤7V,
T
J
=25°C
0°C≤T
J
≤125°C
T
J
=25°C, I
O
=10mA ~1A
0°C≤T
J
≤125°C
∆V
OUT
,
∆V
REF
=1%, I
O
=1A
0°C≤T
J
≤125°C
0°C≤T
J
≤125°C
2.65≤V
IN
≤7V
Adjustable pin current (I
ADJ
)
10mA≤I
O
≤1A
0°C≤T
J
≤125°C
2.65≤V
IN
≤7V
Adjustable pin current change
(∆I
ADJ
)
10mA≤I
O
≤1A
0°C≤T
J
≤125°C
I
O
=0.5A
Temperature stability
Minimum load current (Adj.)
Quiescent current (fixed outputs)
RMS output noise (% of V
OUT
)
Ripple rejection ratio
8/16/2006 Rev.3.01
0.98VOUT
MIN.
1.238
TYP.
1.25
MAX.
1.262
UNIT
V
1.225
1.25
1.275
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
5.05
V
V
OUT
1.02VOUT
0.015
0.035
0.1
0.2
1.3
1
0.2
0.2
0.3
0.4
1.5
%V
OUT
Load regulation
%V
OUT
Dropout voltage
Current limit
V
A
µA
55
120
0.2
5
µA
0°C≤T
J
≤125°C
0°C≤T
J
≤125°C
0°C≤T
J
≤125°C
10Hz≤f≤10KHz
120Hz input ripple
C
OUT
=25µF
60
0.5
5
10
0.003
72
10
14
% V
OUT
mA
mA
%V
OUT
dB
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SS6117AG
TYPICAL PERFORMANCE CHARACTERISTICS
0.1
Output Voltage
(V, AC)
Output Voltage
(mV, AC)
V
IN
=5V
C
IN
=1µF
C
OUT
=10µF (Tantalum)
V
OUT
=3.3V
0.05
50
0
0
-0.05
-0.1
--50
--100
Input Voltage (V)
C
OUT
=10µF (Tantalum)
V
OUT
=3.3V
Load Current
0.4A
7.0
0.1A
6.0
0
40
80
120
160
200
0
10
20
30
40
50
Time (
µ
S)
Time (µS)
Fig. 2 Line Transient Response
Fig. 1 Load Transient Response
Minimum Differential Voltage (V)
1.26
Minimum Operating Current (mA)
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0
1
2
3
4
5
1.24
1.22
1.20
1.18
1.16
0
200
400
600
800
1000
Output Current (mA)
Fig. 3
Dropout Voltage (V
OUT
=3.3V)
Fig. 4
Differential Voltage (V)
Minimum Operating Current
5
Minimum Load Current (mA)
T
J
=125°C
4
3
T
J
=
25°
C
T
J
=0°C
2
1
0
1
2
3
4
5
6
7
8
9
Input/Output Differential (V)
Fig. 5 Minimum Load Current (Adjustable Version)
8/16/2006 Rev.3.01
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SS6117AG
BLOCK DIAGRAM
V
IN
+
GM
V
REF
+
1.25V
Current Amp.
-
Thermal
Limit
55
µ
A
Current
Limit
V
OUT
For fixed output voltage
device
ADJ
GND
PIN DESCRIPTIONS
ADJ
-
Providing V
REF
=1.25V (typ.) for adjustable V
OUT
. V
REF
=V
OUT
-V
ADJ
and I
ADJ
=55µA (typ.)
(GND PIN- Power ground.)
Adjustable output voltage.
Power input.
VOUT -
VIN
-
8/16/2006 Rev.3.01
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