Analog Devices Inc. EVAL-LT3099-AZ Evaluation Board
Analog Devices EVAL-LT3099-AZ Evaluation Board features the LT3099, a -20V, 1A, ultralow-noise, ultra-high power-supply rejection ratio (PSRR) negative linear regulator that incorporates voltage input-to-output control (VIOC) tracking. VIOC allows control of the upstream switching converter to maintain a constant voltage across the LT3099 and, therefore, minimizes power dissipation and maintains PSRR.
The EVAL-LT3099-AZ operates over an input voltage range of -3.8V to -20V. The LT3099 delivers a maximum output current of 1A. In addition to featuring ultralow noise and ultrahigh PSRR, the regulator offers programmable power-good functionality and a programmable current limit. The Enable function (EN/UV pin) is bidirectional and can be controlled with either a positive or a negative voltage.
Built-in protection includes an internal current limit with foldback and a thermal limit with hysteresis. The LT3099 on the Analog Devices EVAL-LT3099-AZ features a 14-lead, 3mm x 4mm, plastic dual-flat no-leads (DFN) package with an exposed pad on the bottom side of the IC. A proper board layout is essential for maximum thermal performance.
Features
- -3.8V to -20V input voltage range
- Resistor programmed -3.32V output voltage
- 1A maximum output current
- BNC connectors for noise and PSRR measurement
- Resistor-programmed Power Good and fast start-up
- Resistor programmable current limit and UVLO
- VIOC to manage power dissipation and PSRR
- Thermally enhanced, 14-lead, 3mm x 4mm, DFN package
Applications
- RF power supplies and precision power supplies
- Very low noise instrumentation
- High-speed/high-precision data converters
- Medical applications - diagnostics and imaging
- Post-regulator for switching supplies
Additional Resources
Board Layout
Related Negative Linear Regulator
Analog Devices Inc. LT3099 Ultra-High PSRR Negative Linear Regulators
Ultra-low noise and ultra-high PSRR architecture for powering noise-sensitive applications.