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LTC1046

“Inductorless”

5V to – 5V Converter

Generating – 5V from 5V

The LTC

capacitor voltage converter. It plugs in for ICL7660/

LTC1044 in 5V applications where more output current is

needed. The device is optimized to provide high current

capability for input voltages of 6V or less. It trades off

operating voltage to get higher output current. The

LTC1046 provides several voltage conversion functions:

Designed to be pin-for-pin and functionally compatible

with the ICL7660 and LTC1044, the LTC1046 provides 2.5

times the output drive capability.

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50mA Output Current

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Plug-In Compatible with ICL7660/LTC1044

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300

µA Maximum No Load Supply Current at 5V

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Boost Pin (Pin 1) for Higher Switching Frequency

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97% Minimum Open-Circuit Voltage Conversion

Efficiency

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95% Minimum Power Conversion Efficiency

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Wide Operating Supply Voltage Range: 1.5V to 6V

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Easy to Use

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Low Cost

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Conversion of 5V to

±5V Supplies

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FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

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

1

2

3

4

8

7

6

5

OSC

LV

BOOST

GND

LTC1046

10

µF

10

µF

1046 TA01

5V INPUT

–5V INPUT

+

0

0

–1

–2

–3

–4

–5

10

20

30

40

1046 TA02

50

ICL7660/LTC1044,

LTC1046,