| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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2,821 pcs
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2821 pcs | On Request | 1 | On Request | On Request | 04+ | On Request | On Request |
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| Tape & Reel |
The LTC1682 from LT is a versatile doubler charge pump integrated with a low noise, low dropout (LDO) linear regulator. This device is designed to generate a low noise boosted supply voltage, making it ideal for powering noise-sensitive components such as high-frequency VCOs in wireless applications.
The internal doubler charge pump efficiently converts an input voltage range of 1.8V to 4.4V to a boosted output. This boosted voltage is then regulated by the internal LDO to provide a clean, low noise output. The adjustable version allows for user-defined output voltages via external resistors, while fixed versions offer 3.3V and 5V outputs. The regulator can supply up to 50mA of output current and is stable with small ceramic capacitors as low as 2µF, reducing board space.
Key features include low output noise of 60µVRMS (100kHz BW), a switching frequency of 550kHz, and low operating current of 150µA. The device also incorporates internal thermal shutdown and current limiting for protection. It is available in compact 8-pin MSOP and SO packages, suitable for space-constrained designs.
Applications for the LTC1682 include VCO power supplies in cellular phones, 2-way pagers, wireless PCMCIA cards, portable medical instruments, low power data acquisition systems, and remote transmitters.
The LTC1682 has a low output noise of 60µVRMS with a 100kHz bandwidth.
The LTC1682 accepts an input voltage range from 1.8V to 4.4V.
The LTC1682 can supply an output current of up to 50mA.
The LTC1682 is available in 8-pin MSOP and 8-pin SO packages.
The LTC1682 operates at a switching frequency of 550kHz.
The LTC1682 has a low operating current of 150µA.
The LTC1682 features a low shutdown current of 1µA.