LTC3200/LTC3200-5

1

APPLICATIO S

DESCRIPTIO

FEATURES

TYPICAL APPLICATIO

The LTC

quency switched capacitor voltage doublers. They pro-

duce a regulated output voltage from a 2.7V to 4.5V input

with up to 100mA of output current. Low external parts

count (one flying capacitor and two small bypass capaci-

ideally suited for small, battery-powered applications.

A new charge-pump architecture maintains constant

switching frequency to zero load and reduces both output

and input ripple. The LTC3200/LTC3200-5 have thermal

shutdown capability and can survive a continuous short-

prevents excessive inrush current during start-up.

High switching frequency enables the use of small ceramic

capacitors. A low current shutdown feature disconnects

The LTC3200 is available in an 8-pin MSOP package and

the LTC3200-5 is available in a 6-pin ThinSOT.

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White LED Backlighting

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Li-Ion Battery Backup Supplies

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Local 3V to 5V Conversion

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Smart Card Readers

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PCMCIA Local 5V Supplies

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

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Low Noise Constant Frequency Operation

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Output Current: 100mA

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Available in 8-Pin MSOP (LTC3200) and Low

Profile (1mm) 6-Pin ThinSOT

Packages

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2MHz Switching Frequency

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Fixed 5V

± 4% Output (LTC3200-5) or ADJ

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Automatic Soft-Start Reduces Inrush Current

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No Inductors

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Low Noise, Regulated

Charge Pump DC/DC Converters

Regulated 5V Output from a 2.7V to 4.5V Input

Output Ripple Voltage vs Load Current

OUTPUT CURRENT (mA)

0

20

30

100

3200 TA02

10

0

25

50

75

40

1

LTC3200-5

2

3

6

5

4

3200-5 TA01

1

µF

1

µF

1

µF

GND

SHDN

ON

OFF

2.7V TO 4.5V

ALL CAPACITORS = MURATA GRM 39X5R105K6.3AJ

OR TAIYO YUDEN JMK107BJ105MA

ThinSOT is a trademark of Linear Technology Corporation.