LTC3824

1

3824fc

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

High Voltage Step-Down

Controller With 40µA

Quiescent Current

to drive an external P-channel MOSFET. With a wide input

range of 4V to 60V and a high voltage gate driver, the

LTC3824 is suitable for many industrial and automotive

high power applications. Constant frequency current mode

operation provides excellent performance.

The LTC3824 can be configured for Burst Mode operation.

Burst Mode operation enhances low current efficiency

(only 40μA quiescent current) and extends battery run

time. The switching frequency can be programmed up to

600kHz and is easily synchronizable.

Other features include current limit, soft-start, micropower

shutdown, and Burst Mode disable.

The LTC3824 is available in a 10-lead MSE power package.

5V/2A Buck Converter

200kHz to 600kHz

40μA Quiescent Current

Voltage P-channel MOSFET

MSE Package

L, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology Corporation.

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

including 5731964.

Efficiency and Power Loss vs Load Current

3824 TA01

10k

80.6k

0.025Ω

51Ω

0.1μF

422k

100pF

100μF

2

22μH

5V

2A

0.1μF

392k

33μF

100V

3.3nF

LTC3824

SENSE

GATE

CAP

GND

SS

SYNC/MODE

5.5V TO 60V

+

LOAD CURRENT (mA)

60

70

90

80

10

100

3824 TA01a

50

100

0.5

1.0

2.0

1.5

0

2.5

EFFICIENCY

POWER LOSS

2000

1000