LT8410/LT8410-1

1

84101f

APPLICATIONS

TYPICAL APPLICATION

DESCRIPTION

Ultralow Power Boost

Converter with Output

Disconnect

with integrated power switch, Schottky diode and output

disconnect circuitry. The parts control power delivery by

varying both the peak inductor current and switch off-

time. This control scheme results in low output voltage

ripple as well as high efficiency over a wide load range.

The quiescent current is a low 8.5μA, which is further

reduced to 0μA in shutdown. The internal disconnect

circuitry allows the output voltage to be blocked from

the input during shutdown. High value (12.4M/0.4M)

resistors are integrated on chip for output voltage detection,

significantly reducing input referred quiescent current.

The LT8410/-1 also features a comparator built into the

pins, built in soft-start and comes in a tiny 8-pin 2mm ×

2mm DFN package.

General Purpose Bias with Wide Input Voltage

L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Hot Swap

is a trademark 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.

FEATURES

8.5μA in Active Mode

0μA in Shutdown Mode

25mA Current Limit (LT8410)

8mA Current Limit (LT8410-1)

Integrated

GND)

SW

CAP

GND

CHIP

ENABLE

FBP

8410-1 TA01a

LT8410

2.2μF

0.1μF

100μH

0.1μF

0.1μF*

2.5V to 16V

SHDN

604K

412K

*HIGHER VALUE CAPACITOR IS REQUIRED

LOAD CURRENT (mA)

0.01

10

8

2

6

4

0

8410-1 TA02

10

1

0.1

LOAD CURRENT (mA)

0.01

100

50

60

70

80

90

40

8410-1 TA03

100

10

0.1

1

Output Voltage Ripple

vs Load Current

Efficiency vs Load Current