1

LTC3410

3410fb

OUTPUT CURRENT (mA)

0.1

0

10

20

30

40

50

60

70

80

90

100

1

0.1

0.01

0.001

0.0001

10

100

1

1000

3410 TA01b

EFFICIENCY

POWER LOSS

µA Supply Current

■

±2% Output Voltage Accuracy

Load Transient Response

The LTC

nous buck regulator using a constant frequency, current

mode architecture. The device is available in adjustable

and fixed output voltage versions. Supply current during

operation is only 26

µA, dropping to <1µA in shutdown.

The 2.5V to 5.5V input voltage range makes the LTC3410

ideally suited for single Li-Ion battery-powered applica-

tions. 100% duty cycle provides low dropout operation,

extending battery life in portable systems.

Switching frequency is internally set at 2.25MHz, allowing

the use of small surface mount inductors and capacitors.

The LTC3410 is specifically designed to work well with

ceramic output capacitors, achieving very low output

voltage ripple and a small PCB footprint.

The internal synchronous switch increases efficiency and

eliminates the need for an external Schottky diode. Low

output voltages are easily supported with the 0.8V feed-

back reference voltage. The LTC3410 is available in a tiny,

low profile SC70 package.

■

Wireless and DSL Modems

■

Digital Cameras

■

MP3 Players

■

Portable Instruments

2.25MHz, 300mA

Synchronous Step-Down

Regulator in SC70

APPLICATIO S

FEATURES

TYPICAL APPLICATIO

DESCRIPTIO

Efficiency and Power Loss

vs Output Current

4.7

µF

CER

2.7V

TO 5.5V

LTC3410

RUN

4.7

µH

10pF

887k

412k

3410 TA01a

SW

GND

4.7

µF

CER

2.5V

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

other trademarks are the property of their respective owners. Protected by U.S. Patents,

including 5481178, 6580258, 6304066, 6127815, 6498466, 6611131, 5994885.