SG2003/A
SG2004/A
GENERAL DESCRIPTION
The SG2003/A and SG2004/A low-power, low-noise,
low-dropout, CMOS linear voltage regulators operate from
a 2.5V to 5.5V input and deliver up to 400mA (400mA peak
SG2003 only). They are the perfect choice for low voltage,
low power applications. An ultra low ground current
(120
µA
at 400mA output) make them attractive for battery
operated power systems. The SG2003/A and SG2004/A
series also offer ultra low dropout voltage (280mV at
400mA output) to prolong battery life in portable
electronics. Systems requiring a quiet voltage source, such
as RF applications, will benefit from the SG2003/A and
SG2004/A series’ ultra low output noise (30µVRMS). An
external noise bypass capacitor connected to the device’s
BP pin can further reduce the noise level.
The output voltage is preset to voltages in the range of 1.5V
to 4.5V. Other features include a 10nA logic-controlled
shutdown mode,
foldback current limit
and thermal
shut-down protection.
SG2003/A comes in 5-pin SOT23 package and SG2004/A
comes in 8-pin SO package.
400mA, Low Power, Low Noise,
Low Dropout, Linear Regulators
FEATURES
-
Low Output Noise: 30µV
RMS
typ(10Hz to 100KHz)
-
Ultra-Low Dropout Voltage:
-
-
-
-
-
-
-
280mV at 400mA output
Low 77µA No-Load Supply Current
Low 120µA Operating Supply Current
at 400mA Output
Thermal-Overload Protection
Output Current Limit
Preset Output Voltages
(±1.6%
Accuracy)
10nA Logic-Controlled Shutdown
Available in Multiple Output Voltage Versions
Fixed Outputs of 2.5V, 2.8V, 2.85V, 3.0V, and 3.3V
Adjustable Output from 1.5V to 4.5V
PIN CONFIGURATIONS（TOP VIEW）
SG2003/A
IN
GND
1
2
3
SOT23-5
4
BP/FB
5
OUT
APPLICATIONS
Cellular Telephones
Cordless Telephones
PHS Telephones
PCMCIA Cards
Modems
MP3 Players
Hand-Held Instruments
Palmtop Computers
Electronic Planners
Portable/Battery-Powered Equipment
EN
SG2004/A
EN
IN
OUT
BP/FB
1
8
GND
GND
GND
GND
2
7
3
6
4
5
SO-8
Shengbang Microelectronics Co, Ltd
Tel: 86/451/84348461
www.sg-micro.com
REV. B
ORDERING INFORMATION
MODEL
V
OUT
(V)
PIN-
PACKAGE
SPECIFIED
TEMPERATURE
RANGE
ORDERING
NUMBER
PACKAGE
MARKING
PACKAGE
OPTION
SG2003-2.5
SG2003-2.8
SG2003-2.85
SG2003-3.0
SG2003-3.3
SG2003A
SG2004-2.5
SG2004-2.8
SG2004-2.85
SG2004-3.0
SG2004-3.3
SG2004A
2.5V
2.8V
2.85V
3.0V
3.3V
adjustable
2.5V
2.8V
2.85V
3.0V
3.3V
adjustable
SO-8
SOT23-5
- 40°C to +125°C
- 40°C to +125°C
- 40°C to +125°C
- 40°C to +125°C
- 40°C to +125°C
- 40°C to +125°C
- 40°C to +125°C
- 40°C to +125°C
- 40°C to +125°C
- 40°C to +125°C
- 40°C to +125°C
- 40°C to +125°C
SG2003-2.5XN5/TR
SG2003-2.8XN5/TR
SG2003-2.85XN5/TR
SG2003-3.0XN5/TR
SG2003-3.3XN5/TR
SG2003-XN5/TR
SG2004-2.5XS/TR
SG2004-2.8XS/TR
SG2004-2.85XS/TR
SG2004-3.0XS/TR
SG2004-3.3XS/TR
SG2004-XS/TR
X325
X328
X32J
X330
X333
X3AA
SG2004-2.5XS
SG2004-2.8XS
SG2004-2.85XS
SG2004-3.0XS
SG2004-3.3XS
SG2004-XS
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 2500
Tape and Reel, 2500
Tape and Reel, 2500
Tape and Reel, 2500
Tape and Reel, 2500
Tape and Reel, 2500
ABSOLUTE MAXIMUM RATINGS
IN to GND.........................................................- 0.3V to +6V
Output Short-Circuit Duration.................................Infinite
EN to GND........................................................- 0.3V to +6V
OUT, BP/FB to GND...........................- 0.3V to (V
IN
+ 0.3V)
Power Dissipation, P
D
@ T
A
= 25℃
SOT23-5 .....................................................................................0.4W
SO-8 ........................................................................................0.625W
Package Thermal Resistance
SOT23-5,
θ
JA
....................................................................... 250℃/W
SO-8,
θ
JA
....................................................................160°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.
２
SG2003/A
SG2004/A
ELECTRICAL CHARACTERISTICS
(V
IN
= V
OUT (NOMINAL)
+1V, 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, V
OUT
≥2.5V,
T
A
= +25°C
I
OUT
= 0.1mA to 400mA, V
OUT
≥2.5V
T
A
= 0°C to +70°C
Output Voltage Accuracy
I
OUT
= 0.1mA to 400mA, V
OUT
≥2.5V
T
A
= - 40°C to +125°C
I
OUT
= 0.1mA to 400mA, V
OUT
,
＜2.5V
T
A
= - 40°C to +125°C
Output Current
Current Limit
Ground Pin Current
SG2003
SG2004
I
LIM
I
Q
No load, EN = 2V
I
OUT
= 400mA, EN = 2V
Dropout Voltage
(Note2)
Line Regulation
Load Regulation
Output Voltage Noise
Power Supply Rejection Rate
SHUTDOWN
EN Input Threshold
EN Input Bias Current
Shutdown Supply Current
Shutdown Exit Delay
(Note3)
THERMAL PROTECTION
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
T
SHDN
ΔT
SHDN
160
15
℃
℃
V
IH
V
IL
I
B(SHDN)
I
Q(SHDN)
V
IN
= 2.5V to 5.5V
EN = 0V and EN = 5.5V
EN = 0.4V
C
BP
= 0.01µF
C
OUT
= 1µF, no load
T
A
= +25°C
T
A
= +125°C
T
A
= +25°C
T
A
= +125°C
T
A
= +25°C
2.0
0.4
0.01
0.01
0.01
0.01
30
1
1
V
µA
µA
µs
ΔV
LNR
ΔV
LDR
I
OUT
= 1mA
I
OUT
= 400mA
V
IN
= 2.5V or (V
OUT
+ 0.1V) to 5.5V,
I
OUT
= 1mA
I
OUT
= 0.1mA to 400mA, C
OUT
= 1µF
f = 10Hz to 100KHz,
C
BP
= 0.01µF
C
BP
= 0.1µF, I
LOAD
= 50mA,
C
OUT
= 1µF
C
OUT
= 10µF
f = 100Hz,
f = 1KHz,
V
OUT
≤3.3V
V
OUT
＞3.3V
400
410
750
77
77
120
0.8
280
0.004
0.0005
30
74
54
440
0.15
0.002
mV
%/V
%/mA
µV
RMS
dB
dB
130
145
µA
CONDITIONS
MIN
2.5
-1.6
TYP
MAX
5.5
1.6
2.5
2.9
3.1
400
(Note1)
UNITS
V
%
mA
mA
mA
e
n
PSRR
Specifications subject to change without notice.
Note 1:
SG2003 series’ output current is 400mA peak.
Note 2:
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
+ 1V.
(Only applicable for V
OUT
= +2.5V to +4.5V)
Note 3:
Time needed for V
OUT
to reach 95% of final value.
３
SG2003/A
SG2004/A
TYPICAL OPERATION CIRCUIT
INPUT
2.5V TO 5.5V
IN
C
IN
1μF
ON
OFF
OUT
OUTPUT
C
OUT
1μF
ON
INPUT
2.5V TO 5.5V
IN
C
IN
1μF
OUT
OUTPUT
SG2003A
SG2004A
EN
GND
FB
R
1
SG2003
SG2004
EN
GND
BP
C
OUT
1μF
OFF
C
BP
0.01μF
R
2
Adjustable Voltage Version
Fixed Voltage Version
Standard 1% Resistor Values for Common
Output Voltages of
Adjustable Voltage Version
V
OUT
(V)
1.5
1.8
2.5
2.8
2.85
3.0
3.3
R
1
(kΩ)
13
28
63.4
78.7
80.6
88.7
95.3
R
2
(kΩ)
61.9
61.9
61.9
61.9
61.9
61.9
57.6
Note: V
OUT
= (
R
1
+
R
2
)/
R
2
× 1.2395
PIN DESCRIPTION
NAME
IN
GND
EN
BP
FB
OUT
SOT23-5
PIN
1
2
3
4
4
5
SO-8
PIN
2
5,6,7,8
1
4
4
3
FUNCTION
Regulator Input. Supply voltage can range from 2.5V to 5.5V. Bypass with a 1µF capacitor to GND.
Ground.
Shutdown Input. A logic low reduces the supply current to 10nA. Connect to IN for normal
operation.
Reference-Noise Bypass(fixed voltage version only). Bypass with a low-leakage 0.01µF ceramic
capacitor for reduced noise at the output.
Adjustable voltage version only—this is used to set the output voltage of the device.
Regulator Output.
４
SG2003/A
SG2004/A
TYPICAL OPERATING CHARACTERISTICS
V
IN
= V
OUT(NOMINAL)
+ 1V, C
IN
= 1µF, C
OUT
= 1µF, C
BP
= 0.01µF, 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
0
0
200
Ground Pin Current vs.Input Voltage
Ground Pin Current(µA)
Ground Pin Current(µA)
I
load
= 50mA
150
I
load
= 50mA
100
50
No Load
V
OUT
= 3.3V
1
2
3
4
Input Voltage(V)
5
6
Output Voltage vs.Input Voltage
6
No Load
5
4
V
OUT
= 3.3V
3
2
V
OUT
= 2.5V
1
0
0
1
2
3
4
Input Voltage(V)
5
6
Ground Pin Current vs.Load Current
190
180
170
160
150
140
130
120
110
100
90
80
70
60
0
100
Ground Current(µA)
Output Voltage(V)
V
OUT
= 3.3V
V
OUT
= 2.5V
200
300
Load Current(mA)
400
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
300
Load Current(mA)
400
3.275
V
OUT
= 3.3V
3.25
0
100
200
300
Load Current(mA)
400
５
SG2003/A
SG2004/A
PCB设计
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