1

LT3012B

3012bf

■

Low Quiescent Current: 40

µA

■

No Protection Diodes Needed

µF Output Capacitor

■

Stable with Aluminum, Tantalum or Ceramic

Capacitors

■

No Reverse Current Flow from Output to Input

(4mm

× 3mm) DFN Packages

250mA, 4V to 80V

Low Dropout

Micropower Linear Regulator

5V Supply

Dropout Voltage

The LT

linear regulator. The device is capable of supplying 250mA

of output current with a dropout voltage of 400mV. De-

signed for use in battery-powered or high voltage sys-

tems, the low quiescent current (40

µA operating) makes

the LT3012B an ideal choice. Quiescent current is also well

controlled in dropout.

Other features of the LT3012B include the ability to oper-

ate with very small output capacitors. The regulators are

stable with only 3.3

µF on the output while most older

devices require between 10

µF and 100µF for stability.

Small ceramic capacitors can be used without any need for

series resistance (ESR) as is common with other regula-

tors. Internal protection circuitry includes reverse-battery

protection, current limiting, thermal limiting and reverse

current protection.

The device is available with an adjustable output with a

1.24V reference voltage. The LT3012B regulator is avail-

able in the 16-lead TSSOP and 12 pin low profile (0.75mm)

(4mm

× 3mm) DFN packages with an exposed pad for

enhanced thermal handling capability.

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

, LTC and LT are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

1

µF

5.4V TO

80V

5V

250mA

3.3

µF

750k

249k

IN

LT3012B

OUT

ADJ

GND

OUTPUT CURRENT (mA)

0

250

300

400

350

200

3012B TA02

200

150

50

100

150

250

100

50

0