LT3008 Series

1

3008fa

TEMPERATURE (°C)

400

3008 TA01b

200

100

50

0

500

300

250

150

5

350

2

3

1

0

6

450

4

–50 –25

0

25

50

75

100 125 150

DROPOUT

VOLTAGE

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

Low Dropout Linear Regulators

(LDO) linear regulators. The devices supply 20mA output

current with a dropout voltage of 300mV. No-load quiescent

current is 3μA. Ground pin current remains at less than

5% of output current as load increases. In shutdown,

quiescent current is less than 1μA.

The LT3008 regulators optimize stability and transient

response with low ESR ceramic capacitors, requiring a

minimum of only 2.2μF. The regulators do not require

the addition of ESR as is common with other regulators.

Internal protection circuitry includes current limiting,

thermal limiting, reverse-battery protection and reverse-

current protection.

The LT3008 series are ideal for applications that require

moderate output drive capability coupled with ultralow

standby power consumption. The device is available in

fixed output voltages of 1.2V, 1.5V, 1.8V, 2.5V, 3.3V and

5V, and an adjustable version with an output voltage range

of 0.6V to 44.5V. The LT3008 is available in the thermally

enhanced 6-lead DFN and 8-lead TSOT-23 packages.

3.3V, 20mA Supply with Shutdown

n

Ultralow Quiescent Current: 3μA

n

Input Voltage Range: 2.0V to 45V

n

Output Current: 20mA

n

Dropout Voltage: 300mV

n

n

Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V

n

Output Tolerance:

±2% Over Load, Line and

Temperature

n

Stable with Low ESR, Ceramic Output Capacitors

(2.2μF Minimum)

n

Shutdown Current: <1μA

n

Current Limit Protection

n

Reverse-Battery Protection

n

Thermal Limit Protection

n

TSOT-23 and 2mm

× 2mm DFN Packages

n

Automotive

n

Low Current Battery-Powered Systems

n

Keep-Alive Power Supplies

n

Remote Monitoring

n

Utility Meters

n

Low Power Industrial Applications

IN

SHDN

2.2μF

3008 TA01a

OUT

SENSE

3.8V TO

45V

GND

LT3008-3.3

3.3V

20mA

1μF

Dropout Voltage/Quiescent Current

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Technology Corporation. All other trademarks are the property of their respective owners.