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
SGMICRO [ Shengbang Microelectronics Co, Ltd ]
