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

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

shut-down protection.

SG2003/A comes in 5-pin SOT23 package and SG2004/A

comes in 8-pin SO package.

APPLICATIONS

Cellular Telephones

Cordless Telephones

PHS Telephones

PCMCIA Cards

Modems

MP3 Players

Hand-Held Instruments

Palmtop Computers

Electronic Planners

Portable/Battery-Powered Equipment

400mA, Low Power, Low Noise,

Low Dropout, Linear Regulators

FEATURES

-

-

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）

1

2

3

4

5

6

7

8

SO-8

SG2004/A

EN

IN

OUT

BP/FB

GND

GND

GND

GND

1

2

3

4

5

OUT

IN

SOT23-5

GND

EN

BP/FB

SG2003/A

Shengbang Microelectronics Co, Ltd

Tel: 86/451/84348461

www.sg-micro.com

REV. B