LT8337/LT8337-1

1

Rev. 0

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TYPICAL APPLICATION

FEATURES

DESCRIPTION

Step-Up Silent Switcher with PassThru

up DC/DC converter. It features Silent Switcher architec-

ture and optional spread spectrum frequency modula-

tion (SSFM) to minimize EMI emissions while delivering

high efficiencies at high switching frequencies.

cent current in Burst Mode operation, and 100% duty-

cycle capability for the synchronous MOSFET in PassThru

ally suited for battery-powered systems and general pur-

pose step-up applications.

The LT8337/LT8337-1 integrates 28V, 5A power switches,

operating at a fixed switching frequency programmable

between 300kHz and 3MHz and synchronizable to an

external clock. The LT8337/LT8337-1 features output

soft-start and output overvoltage lockout.

for fast transient response. The LT8337 offers an output

power good flag via the PG pin.

High Efficiency 5V to 13V Input, 2MHz, 15V Output Boost Converter

APPLICATIONS

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Ultralow EMI Emissions

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Optional Spread Spectrum Frequency Modulation

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Integrated 28V, 5A Power Switches

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Wide Input Voltage Range: 2.7V to 28V

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Output Voltage Programmable Up to 26V

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0.3µA in Shutdown

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15µA in PassThru™ (LT8337)

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100% Duty Cycle Capability for Synchronous MOSFET

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External Compensation: Fast Transient Response

(LT8337-1)

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Power Good Monitor (LT8337)

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Adjustable and Synchronizable: 300kHz to 3MHz

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Pulse-Skipping or Burst Mode Operation at Light Load

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Small 16-Lead (3mm × 3mm) LQFN Package

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Battery-Powered Systems

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General Purpose Step-Up

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by U.S patents, including 10686381.

Efficiency

OUTPUT CURRENT (mA)

0.1

1

10

100

1000

10000

0

10

20

30

40

50

60

70

80

90

100

0.1

1

10

100

1000

10000

83371 TA01b

SYNC/MODE

PG

SW

BST

EN/UVLO

FB

GND

LT8337

83371 TA01a

RT

5V TO 13V

15V

22µF

2.2µH

0.1µF

1M

22µF

×4

71.5k

1µF

47.5k

2MHz