LTC3602

1

3602fb

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

2.5A, 10V, Monolithic

Synchronous Step-Down

Regulator

step-down DC/DC converter utilizing a constant-frequency,

current mode architecture. It operates from an input voltage

range of 4.5V to 10V and provides an adjustable regulated

output voltage from 0.6V to 9.5V while delivering up to

2.5A of output current. The internal synchronous power

switch with 65mΩ on-resistance increases efficiency

and eliminates the need for an external Schottky diode.

The switching frequency can either be set by an external

compensation allows the transient response to be optimized

over a wide range of loads and output capacitors.

The LTC3602 can be configured for either Burst Mode op-

eration or forced continuous operation. Forced continuous

operation reduces noise and RF interference, while Burst

Mode operation provides the high efficiency at light loads.

In Burst Mode operation, external control of the burst

clamp level allows the output voltage ripple to be adjusted

according to the requirements of the application.

3.3V, 2.5A, 1MHz Step-Down Regulator

4mm

× 4mm QFN Packages

Efficiency and Power Loss vs Load Current

105k

3602 TA01

22μF

100μF

0.22μF

2.2μH

1μF

1nF

RUN

PGOOD

TRACK/SS

BOOST

SW

PGND

LTC3602

SYNC/MODE

105k

475k

22pF

4.32k

3.3V

2.5A

4.5V TO 10V

, LT, LTC, LTM, Burst Mode and OPTI-LOOP are registered trademarks of Linear

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

LOAD CURRENT (A)

0.01

80

90

100

0.1

1

10

3602 TA01b

70

75

85

95

65

60

100

1000

10000

10

1

POWER LOSS

EFFICIENCY