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ADI power-management ICs fit entertainment, embedded systems

Posted: 24 Jan 2002 ?? ?Print Version ?Bookmark and Share

Keywords:analog devices? adi? power management ic? power management? ldo?

The company has expanded its anyCAP LDO line of power-management chips with the introduction of the ADP3333, ADP3334, ADP3338 and ADP3339 devices. The chips are positioned for use in audio/entertainment systems, cable boxes and power sources for embedded DSP- and microcontroller-based systems.

The ADP3333 and ADP3334 provide an accuracy of 1.8 percent and output currents of 300mA and 500mA respectively. The devices also feature a safety current limit, thermal overload protection and a shutdown feature. In shutdown mode, the ground current is reduced to <15A. The ADP3333/4 can also be used in PCMCIA cards, PDAs, networking systems and external modems.

The ADP3338 and ADP3339 LDO provide a typical dropout voltage of 190mV at 1A and 230mV at 1.5A respectively. The 1A ADP3338 LDO has 1.4 percent accuracy, while the 1.5A ADP3339 LDO boasts of 1.5 percent accuracy over line, load and temperature.

Both LDOs also feature pin-to-pin and functional replacement of legacy LDOs, low ground current, plus current and thermal limiting. The ADP3338/9 are also suitable for wireless basestations, USB hubs, external DSL/cable modems and routers.

The company claims anyCAP is the first LDO technology to allow designers to use virtually any size and type of output capacitor regardless of ESR, but still maintain output stability.

The ADP3338 and ADP3339 are priced at $1.40 and $1.65 each in quantities of 1,000,and are available in SOT-223 packages. The ADP3333 is priced at 99 cents each in quantities of 1,000, and is available in an 8-lead MSOP package. The ADP3334 ships in an 8-lead SOIC package at $1.23 each in quantities of 1,000.

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