LT3460

1

3460f

APPLICATIO S

FEATURES

TYPICAL APPLICATIO

DESCRIPTIO

s

1.3MHz Switching Frequency

s

High Output Voltage: Up to 36V

s

300mA Integrated Switch

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12V at 70mA from 5V Input

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5V at 60mA from 3.3V Input

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Wide Input Range: 2.5V to 16V

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Uses Small Surface Mount Components

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Low Shutdown Current: <1

µA

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Low Profile (1mm) SC70 and SOT-23 (ThinSOT

Packages

1.3MHz Step-Up DC/DC

Converter in SC70 and ThinSOT

The LT

verter. The LT3460 switches at 1.3MHz, allowing the use

of tiny, low cost and low height capacitors and inductors.

The constant frequency results in low, predictable output

noise that is easy to filter.

The high voltage switch in the LT3460 is rated at 38V,

making the device ideal for boost converters up to 36V.

The LT3460 can generate 12V at up to 70mA from a 5V

supply.

The LT3460 is available in SC70 and SOT-23 packages.

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

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Digital Cameras

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CCD Bias Supply

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XDSL Power Supply

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TFT-LCD Bias Supply

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Local 5V or 12V Supply

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Medical Diagnostic Equipment

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Battery Backup

OFF ON

5V

22

µH

130k

15k

1

µF

22pF

4.7

µF

12V

70mA

SW

FB

SHDN

GND

LT3460

3460 F01

LOAD CURRENT (mA)

0

90

85

80

75

70

65

60

20

40

60

80

3460 F01a

5V to 12V, 70mA Step-Up DC/DC Converter

Efficiency

ThinSOT is a trademark of Linear Technology Corporation

5V/DIV

100mA/DIV

0.2

µs/DIV

3460 F01b

Switching Waveforms