SGM2122

Dual, Low Dropout,

250mA LDO Regulators

GENERAL DESCRIPTION

The SGM2122 is a dual, low-power, low-dropout, CMOS

linear voltage regulator. It operates from a 2.5V to 5.5V

input and delivers up to 250mA at each channel.

The SGM2122 is the perfect choice for low voltage, low

power. The ground current is 190μA (both LDO’s enabled

and active) that makes this part attractive for battery

operated power systems. The SGM2122 also offers low

dropout voltage (250mV at 250mA output) to prolong

battery life in portable electronics.

Separate enable pins control each individual LDO output.

The EN function allows the output of each regulator to be

turned off independently, resulting in greatly reduced

power consumption. Other features include a 10nA

logic-controlled shutdown mode, foldback current limit

and thermal shutdown protection.

The SGM2122 is available in Green SOT-23-6 package.

It operates over an ambient temperature range of -40

℃

to +85

℃.

APPLICATIONS

Cellular Telephones

Cordless Telephones

PCS Telephones

PCMCIA Cards

Modems

MP3 Player

Hand-Held Instruments

Palmtop Computers

Wireless LAN

Portable/Battery-Powered Equipment

FEATURES

 Highly Accurate: ±2%

 Ultra-Low Dropout Voltage:

250mV at 250mA Output

 190µA No-Load Supply Current

 Quick Auto-Discharge in Shutdown Status

 Thermal-Overload Protection

 Output Current Limit

 10nA Logic-Controlled Shutdown

 Operating Temperature Range: -40

℃ to +85℃

 Small Package

SGM2122

OUT1

OUT2

SOT-23-6

GND

EN2

EN1

IN

3

2

1

6

5

4

NOTE: The location of pin 1 on the SGM2122 is determined by

orienting the package marking as shown.

TYPICAL APPLICATION CIRCUIT

OUT2

OUT1

EN1

GND

1

μF

1

μF

ON

OFF

SGM2122

EN2

IN

OUTPUT1

OUTPUT2

1

μF

ON

OFF

INPUT

1

2

34

5

6

REV. A. 4

SG Micro Corp

www.sg-micro.com