Active production — dual-output LDO for power sequencing
Texas Instruments TPS70302PWP is an active-production dual-output adjustable LDO in a 24-HTSSOP package with an exposed thermal pad. The two regulators deliver 1 A and 2 A respectively, with the adjustable output spanning 1.22 V to 5.5 V from a maximum 6 V input rail.
Rail assignment and thermal management
The 2 A output is the primary high-current rail — typically the core or I/O supply in an FPGA or SoC — while the 1 A output handles the auxiliary or pre-driver voltage. Both outputs are positive and adjustable, so a single resistor divider per rail sets the voltage anywhere from 1.22 V to 5.5 V. The dropout voltage is 0.25 V max at 1 A, so the input rail needs at least 250 mV headroom above the output at that current.
Ripple rejection and protection suite
PSRR is specified at 65 dB at 1 kHz and 60 dB at 1 kHz — the second figure likely refers to a different load or output condition, but both indicate moderate ripple attenuation. For noise-sensitive analog rails, a post-filter or a lower-dropout LDO with higher PSRR may be preferred; for digital rails this is adequate. Built-in protection covers overcurrent, overtemperature, reverse polarity, and undervoltage lockout (UVLO). The control features — Enable, Power Good, Reset, and Sequencing — allow the TPS70302PWP to manage power-up order without an external sequencer IC.