3A LDO with 59dB PSRR at 10kHz
The ADP1763WACPZ-1.3-R7 is a fixed 1.3V output LDO from Analog Devices, rated for 3A continuous output current. Its PSRR profile — 59dB at 10kHz dropping to 37dB at 1MHz — means it rejects switching converter ripple across a wide band, making it a suitable rail for noise-sensitive loads like ADC supplies or RF front-ends where post-regulation cleans up a buck converter's output. The dropout voltage is 0.145V maximum at 3A, so the input rail needs only 1.445V minimum to hold regulation. With a maximum input of 1.98V, this part is designed for low-voltage rails — think 1.8V or 1.5V buses feeding a 1.3V core supply.
Industrial temperature grade and protection suite
Built-in protection covers over-current, over-temperature, and short-circuit events. Control features — enable, power-good output, and soft-start — allow sequencing against an FPGA or SoC power-up scheme. The quiescent current is 8mA, and the maximum supply current is 16mA, both reasonable for a 3A LDO where the pass element's base drive dominates.
How it compares to the ADP1761ACPZ0.95-R7
The closest peer in the same low-VIN family is the ADP1761ACPZ0.95-R7, which offers a 0.95V fixed output at 1A. The ADP1763 delivers 3A vs 1A, and its PSRR at 10kHz is 59dB vs 67dB for the ADP1761 — a trade-off: higher output current comes with slightly lower ripple rejection at the low end of the band. Both share the same 1.98V input maximum and 16-LFCSP package, so a board layout designed for the 1A part can often accommodate the 3A part with a thermal-plane check.