The LT3095EUDD#PBF 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.
Adjustable switching frequency from 450KHz to 2MHz
SYNC pin allows synchronization to an external clock
950mA power switches
Wide output voltage range from 1V to 20V
SET pin reference current is 50μA
Low noise of 4μVrms (10Hz to 100KHz)
High frequency PSRR of 72dB at 1MHz
Independent precision threshold enable pins
Symmetric pin-out simplifies PCB layout
Operating junction temperature range from -40°C to 125°C
(EN)
