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NEC2561A More Information

Mfg: NEC
Pack: DIP-4
D/C: 07+


† All typical values are at VCC = 3.3 V or VCC = 5 V, and TA = 25C. Pulse skew is defined as |tPLH − tPHL| of each channel of the same device. NOTE 4: Test conditions are C1−C4 = 0.1 µF at VCC = 3.3 V 0.3 V; C1 = 0.047 µF, C2−C4 = 0.33 µF at VCC = 5 V 0.5 V.
 NEC2561A PDF Download


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DESCRIPTION The device is a power supply controller specifically designed to provide a high performance DC/DC conversion for high current microprocessors. The device implements a dual-phase step-down con- troller with a 180 phase-shift between each phase. A precise 5-bit digital to analog converter (DAC) allows adjusting the output voltage from 0.800V to 1.550V with 25mV binary steps manag- ing On-The-Fly VID code changes. The high precision internal reference assures the selected output voltage to be within 0.6%. The high peak current gate drive affords to have fast switching to the external power mos providing low switching losses. The device assures a fast protection against load over current and load over/under voltage. An inter- nal crowbar is provided turning on the low side mosfet if an over-voltage is detected. In case of over-current, the system works in Constant Cur- rent mode.


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