The DC3158A evaluation board features the LT3041, a 20 V, 1 A, ultra-low noise and ultra-high power-supply rejection ratio (PSRR), low-dropout (LDO) 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 LT3041 and, therefore, minimizes power dissipation and maintains PSRR.
The DC3158A operates over an input voltage range of 3.8 V to 20 V. The LT3041 delivers a maximum output current of 1 A. In addition to featuring ultra-low noise and ultra-high PSRR, the regulator offers programmable power-good functionality and a programmable current limit. Current monitoring is also achieved by sensing the ILIM pin voltage.
Built-in protection includes reverse-battery protection, reverse-current protection, internal current limit with foldback and thermal limit with hysteresis.
For full details on the LT3041, see the LT3041 data sheet, which must be consulted with the user guide when using the DC3158A evaluation board.
The LT3041 of the DC3158A features a 14-lead, 3 mm × 4 mm, plastic DFN package with an exposed pad on the bottom side of the IC. Proper board layout is essential for maximum thermal performance.
