PT4840

The PT4840 Excalibur™ power modules are a series of isolated tripleoutput DC/DC converters that operate from a standard (48V) central office supply. Rated for up to 65W,these regulators are appropriate for powering both analog and mixedsignal circuitry. A typical application is a chip-set for an ADSL/DSL line card.

The output voltage combinations offered by the PT4840 series provide power for a low-voltage processor core, the associated digital circuitry, and analog support circuitry.The PT4840 series incorporates many features to simplify system integration. These include a flexible On/Off control, over-temperature protection, and an input undervoltage lock-out. All outputs are current limited and short-circuit protected. In addition, the lowvoltage outputs for processor core and digital circuitry meet the powerup and power-down sequencing requirements of popular DSP ICs.

The PT4840 series is housed in a space-saving solderable case. The module requires no external heat sink and can occupy as little as 1.97 in2 of PCB area.