SG2011
GENERAL DESCRIPTION
The SG2011 low-power, low-dropout, CMOS linear voltage
regulators operate from a 2.5V to 5.5V input and deliver up
to 300mA. They are perfect choice for low voltage, low
power applications. An ultra low ground current (110
µA
at
300mA output) makes them attractive for battery operated
power systems. The SG2011 series also offer ultra low
dropout voltage (210mV at 300mA output) to prolong
battery life in portable electronics.
The output voltage is preset to voltages in the range of 1.5V
to 5.0V. Other features include
foldback current limit
and
thermal shut-down protection.
SG2011 comes in 3-pin SOT23 and 3-pin SOT89 packages.
300mA , Low Power, Low
Dropout, Linear Regulators
FEATURES
-
Ultra-Low Dropout Voltage:
-
-
-
-
-
-
210mV at 300mA output
Low 80µA No-Load Supply Current
Low 110µA Operating Supply Current
at 300mA Output
Thermal-Overload Protection
Output Current Limit
Preset Output Voltages
(±1.8%
Accuracy)
Output Voltage:
Available in Fixed Outputs of 1.5V, 1.8V, 2.5V, 2.8V,
3.0V, 3.3V, and 3.6V
APPLICATIONS
Cellular Telephones
Digital Cameras
MP3、MP4
USB 2.0
Modems
PC Cameras
Hand-Held Instruments
Electronic Dictionarys
Portable/Battery-Powered Equipment
PIN CONFIGURATIONS
（TOP
VIEW）
GND
1
3
IN
OUT 2
SOT23-3
GND
IN
TYPICAL OPERATION CIRCUIT
1
OUT
2
GND
3
IN
1
GND
2
IN
3
OUT
INPUT
IN
C
IN
1μF
GND
OUT
OUTPUT
SOT89-3
SOT89-3(L-Type)
C
OUT
1μF
SG Microelectronics Co, Ltd
Tel: 86/451/84348461
www.sg-micro.com
REV. B
ORDERING INFORMATION
MODEL
V
OUT
(V)
PIN-
PACKAGE
SOT23-3
SOT89-3
SOT89-3(L-Type)
SOT23-3
SOT89-3
SOT89-3(L-Type)
SOT23-3
SG2011-2.5
2.5V
SOT89-3
SOT89-3(L-Type)
SOT23-3
SOT89-3
SOT89-3(L-Type)
SOT23-3
SOT89-3
SOT89-3(L-Type)
SG2011-3.3
3.3V
SOT23-3
SOT89-3
SOT89-3(L-Type)
SOT23-3
SOT89-3
SOT89-3(L-Type)
- 40°C to +125°C
- 40°C to +125°C
SPECIFIED
TEMPERATURE
RANGE
- 40°C to +125°C
ORDERING
NUMBER
SG2011-1.5XN3/TR
SG2011-1.5XK3/TR
SG2011-1.5XK3L/TR
SG2011-1.8XN3/TR
SG2011-1.8XK3/TR
SG2011-1.8XK3L/TR
SG2011-2.5XN3/TR
SG2011-2.5XK3/TR
SG2011-2.5XK3L/TR
SG2011-2.8XN3/TR
SG2011-2.8XK3/TR
SG2011-2.8XK3L/TR
SG2011-3.0XN3/TR
SG2011-3.0XK3/TR
SG2011-3.0XK3L/TR
SG2011-3.3XN3/TR
SG2011-3.3XK3/TR
SG2011-3.3XK3L/TR
SG2011-3.6XN3/TR
SG2011-3.6XK3/TR
SG2011-3.6XK3L/TR
PACKAGE
MARKING
XB15
SG2011-1.5XK3
SG2011-1.5XK3L
XB18
SG2011-1.8XK3
SG2011-1.8XK3L
XB25
SG2011-2.5XK3
SG2011-2.5XK3L
XB28
SG2011-2.8XK3
SG2011-2.8XK3L
XB30
SG2011-3.0XK3
SG2011-3.0XK3L
XB33
SG2011-3.3XK3
SG2011-3.3XK3L
XB36
SG2011-3.6XK3
SG2011-3.6XK3L
PACKAGE
OPTION
Tape and Reel, 3000
Tape and Reel, 1000
Tape and Reel, 1000
Tape and Reel, 3000
Tape and Reel, 1000
Tape and Reel, 1000
Tape and Reel, 3000
Tape and Reel, 1000
Tape and Reel, 1000
Tape and Reel, 3000
Tape and Reel, 1000
Tape and Reel, 1000
Tape and Reel, 3000
Tape and Reel, 1000
Tape and Reel, 1000
Tape and Reel, 3000
Tape and Reel, 1000
Tape and Reel, 1000
Tape and Reel, 3000
Tape and Reel, 1000
Tape and Reel, 1000
SG2011-1.5
1.5V
SG2011-1.8
1.8V
- 40°C to +125°C
SG2011-2.8
2.8V
- 40°C to +125°C
SG2011-3.0
3.0V
- 40°C to +125°C
SG2011-3.6
3.6V
- 40°C to +125°C
ABSOLUTE MAXIMUM RATINGS
IN to GND.....................................................................- 0.3V to +6V
Output Short-Circuit Duration............................................Infinite
OUT to GND...................................................- 0.3V to (V
IN
+ 0.3V)
Power Dissipation, P
D
@ T
A
= 25℃
SOT23-3 .....................................................................................0.4W
SOT89-3 ................................................................................0.571W
Package Thermal Resistance
SOT23-3,
θ
JA
....................................................................... 250
℃
/W
SOT89-3,
θ
JA
.........................................................................175°C/W
Operating Temperature Range............................- 40°C to +125°C
Junction Temperature...........................................................+150°C
Storage Temperature.............................................- 65°C to +150°C
Lead Temperature (soldering, 10s).......................................260°C
ESD Susceptibility
HBM..........................................................................................7000V
MM..............................................................................................400V
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These
are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in
the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
PIN DESCRIPTION
NAME
IN
GND
OUT
FUNCTION
Regulator Input.
Supply voltage can range from 2.5V to 5.5V.
Ground.
Regulator Output.
２
SG2011
ELECTRICAL CHARACTERISTICS
(V
IN
= V
OUT (NOMINAL)
+ 0.5V or 2.5V (whichever is greater), T
A
= - 40°C to +125°C, unless otherwise noted. Typical values are at T
A
= + 25°C.)
PARAMETER
Input Voltage
SYMBOL
V
IN
I
OUT
= 0.1mA, T
A
= +25°C
I
OUT
= 0.1mA to 300mA,
Output Voltage Accuracy
T
A
= 0°C to +70°C
I
OUT
= 0.1mA to 300mA,
T
A
= - 40°C to +125°C
Output Current
Current Limit
Ground Pin Current
Dropout Voltage
(Note1)
Line Regulation
Load Regulation
Output Voltage Noise
Power Supply Rejection Rate
THERMAL PROTECTION
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
T
SHDN
ΔT
SHDN
160
15
℃
℃
ΔV
LNR
ΔV
LDR
I
LIM
I
Q
No load
I
OUT
= 300mA
I
OUT
= 1mA
I
OUT
= 300mA
V
IN
= 2.5V or (V
OUT
+ 0.1V) to 5.5V,
I
OUT
= 1mA
I
OUT
= 0.1mA to 300mA, C
OUT
= 1µF
f = 10Hz to 100KHz, C
OUT
= 10µF
I
LOAD
= 50mA, C
OUT
= 1µF
f = 100Hz,
f = 1KHz,
300
310
750
80
110
0.8
210
0.004
0.0005
120
74
54
340
0.15
0.002
140
CONDITIONS
MIN
2.5
-1.8
TYP
MAX
5.5
1.8
2.5
2.9
mA
mA
µA
mV
%/V
%/mA
µV
RMS
dB
dB
%
UNITS
V
e
n
PSRR
Specifications subject to change without notice.
Note 1:
The dropout voltage is defined as V
IN
- V
OUT
, when V
OUT
is 100mV below the value of V
OUT
for V
IN
= V
OUT
+ 0.5V.
(Only applicable for V
OUT
= +2.5V to +5.0V)
３
SG2011
TYPICAL OPERATING CHARACTERISTICS
V
IN
= V
OUT (NOMINAL)
+ 0.5V or 2.5V (whichever is greater), C
IN
= 1µF, C
OUT
= 1µF, T
A
= +25℃, unless otherwise noted.
Ground Pin Current vs.Input Voltage
100
80
60
No Load
40
20
V
OUT
= 2.5V
0
0
1
2
3
4
Input Voltage(V)
5
6
I
load
= 50mA
Ground Pin Current vs.Input Voltage
200
Ground Pin Current(µA)
Ground Pin Current(µA)
150
I
load
= 50mA
100
50
No Load
V
OUT
= 3.3V
0
0
1
2
3
4
Input Voltage(V)
5
6
Output Voltage vs.Input Voltage
6
No Load
5
Ground Pin Current vs.Load Current
160
150
140
Ground Current(µA)
130
120
110
100
90
80
70
60
V
OUT
= 2.5V
V
OUT
= 3.3V
Output Voltage(V)
4
V
OUT
= 3.3V
3
2
V
OUT
= 2.5V
1
0
0
1
2
3
4
Input Voltage(V)
5
6
0
50
100
150
200
Load Current(mA)
250
300
Output Voltage vs.Load Current
2.6
3.35
Output Vlotage vs.Load Current
Output Voltage(V)
Output Voltage(V)
2.55
3.325
2.5
3.3
2.45
V
OUT
= 2.5V
2.4
0
100
200
Load Current(mA)
300
3.275
V
OUT
= 3.3V
3.25
0
100
200
Load Current(mA)
300
４
SG2011
TYPICAL OPERATING CHARACTERISTICS
V
IN
= V
OUT (NOMINAL)
+ 0.5V or 2.5V (whichever is greater), C
IN
= 1µF, C
OUT
= 1µF, T
A
= +25℃, unless otherwise noted.
Line-Transient Response
4.5V
3.5V
I
LOAD
= 150mA
3.1V
3V
2.9V
V
OUT
50mA
0mA
V
OUT
= 3V
100µS/div
V
IN
3.05V
3V
2.95V
Load-Transient Response
V
IN
= V
OUT
+ 0.5V
I
LOAD
= 0mA to 50mA
C
IN
= 1
μ
F
V
OUT
I
LOAD
V
OUT
= 3V
40µS/div
Load-Transient Response Near Dropout
3.05V
3V
2.95V
V
OUT
= 3V
V
OUT
Power-Supply Rejection Ratio
vs.Frequency
80
70
60
PSRR(dB)
50
40
30
20
10
0
0.01
C
OUT
= 1μF
C
OUT
= 10μF
I
LOAD
= 50mA
50mA
0mA
C
IN
= 1μF
V
IN
= V
OUT
+ 0.1V
I
LOAD
= 0mA to 50mA
40µS/div
I
LOAD
0.1
1
10
100
1000
Frequency(kHz)
Region of Stable C
OUT
ESR vs.Load Current
100
1200
1100
Current limit(mA)
Current limit vs.Temperature
V
OUT
= 3.3V
10
C
OUT
ESR(
Ω
)
C
OUT
= 10μF
1000
900
800
700
600
500
400
300
1
Stable Region
0.1
C
OUT
= 1μF
0.02
0.01
0
50
100
150
200
Load Current(mA)
250
300
-40 -20
0
20 40 60 80
Temperature(℃)
100 120 140
５
SG2011
PCB设计
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