Charge Pump, Switched Capacitor Voltage Inverter with Shutdown, 50 mA, 35 kHz

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The NCP1729 is a CMOS charge pump voltage inverter that is designed for operation over an input voltage range of 1.15 V to 5.5 V with an output current capability in excess of 50 mA. The operating current consumption is only 122 µA, and a power saving shutdown input is provided to further reduce the current to a mere 0.4 µA. The device contains a 35 kHz oscillator that drives four low resistance MOSFET switches, yielding a low output resistance of 26 Ω and a voltage conversion efficiency of 99%. This device requires only two external 3.3µF capacitors for a complete inverter making it an ideal solution for numerous battery powered and board level applications. The NCP1729 is available in the space saving TSOP-6 (SOT-23-6) package.

  • LCD Panel Bias
  • Cellular Telephones
  • Pagers
  • Personal Digital Assistants
  • Electronic Games
  • Digital Cameras
  • Camcorders
  • Hand Held Instruments
  • Operating Voltage Range of 1.15 V to 5.5 V
  • Output Current Capability in Excess of 50 mA
  • Low Current Consumption of 122 µA
  • Power Saving Shutdown Input for a Reduced Current of 0.4 µA
  • Operation at 35 kHz
  • Low Output Resistance of 26Ω

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NCP1729SN35T1G

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Pb

A

H

P

TSOP-6

1

260

REEL

3000

N

1.15 to 5.5

-Vin or 2Vin

50

20

35

Yes

Price N/A

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