LT3095IUDD#PBF

LINEAR TECHNOLOGY  LT3095IUDD#PBF  芯片, 偏置发生器, 升压/LDO, QFN-24

The is a dual channel low noise bias generator in 24 pin QFN package. It generates two independent low noise bias supplies from common input voltage ranging from 3V to 20V. Each channel includes a fixed frequency peak current mode step up switching regulator and low noise single resistor programmable 50mA linear regulator. The linear regulator"s high PSRR combined with its low noise performance results in less than 100µVP-P output ripple and noise. Each boost regulator adjusts its output voltage to 2V above corresponding linear regulator"s output voltage by optimizing power dissipation, PSRR and transient response. This tracking scheme along with internal boost regulator frequency compensation and integrated schottky diodes minimizes external component count and simplifies system design. Each linear regulator includes internal current limit and thermal limit protection circuitry. The LT3095 switching frequency is externally programmable with single resistor.

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Adjustable switching frequency from 450KHz to 2MHz

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SYNC pin allows synchronization to an external clock

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950mA power switches

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Wide output voltage range from 1V to 20V

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SET pin reference current is 50µA

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Low noise of 4µVrms 10Hz to 100KHz

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High frequency PSRR of 72dB at 1MHz

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Independent precision threshold enable pins

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Symmetric pin-out simplifies PCB layout

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Operating junction temperature range from -40°C to 125°C