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NCP5222MNR2G Datasheet(PDF) 1 Page - ON Semiconductor |
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NCP5222MNR2G Datasheet(HTML) 1 Page - ON Semiconductor |
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1 / 28 page  © Semiconductor Components Industries, LLC, 2010 February, 2010 − Rev. 0 1 Publication Order Number: NCP5222/D NCP5222 High Performance Dual-Channel / Two-Phase Synchronous Buck Controller for Notebook Power System The NCP5222, a fast−transient−response and high−efficiency dual−channel / two−phase buck controller with built−in gate drivers, provides multifunctional power solutions for notebook power system. 180 ° interleaved operation between the two channels / phases has a capability of reducing cost of the common input capacitors and improving noise immunity. The interleaved operation also can reduce cost of the output capacitors with the two−phase configuration. Input supply voltage feedforward control is employed to deal with wide input voltage range. On−line programmable and automatic power−saving control ensures high efficiency over entire load range. Fast transient response reduces requirement on the output filters. In the dual−channel operation mode, the two output power rails are regulated individually. In the two−phase operation mode, the two output power rails are connected together by an external switch and current−sharing control is enabled to balance power delivery between phases. Features • Wide Input Voltage Range: 4.5 V to 27 V • Adjustable Output Voltage Range: 0.8 V to 3.3 V • Option for Dual−Channel and Two−Phase Modes • Fixed Nominal Switching Frequency: 300 kHz • 180° Interleaved Operation Between the Two Channels in Continue−Conduction−Mode (CCM) • Adaptive Power Control • Input Supply Voltage Feedforward Control • Transient−Response−Enhancement (TRE) Control • Resistive or Inductor’s DCR Current Sensing • 0.8% Internal 0.8 V Reference • Internal 1 ms Soft−Start • Output Discharge Operation • Built−in Adaptive Gate Drivers • Input Supplies Undervoltage Lockout (UVLO) • Output Overvoltage and Undervoltage Protections • Accurate Over Current Protection • Thermal Shutdown Protection • QFN−28 Package • This is a Pb−Free Device Typical Applications • CPU Chipsets Power Supplies • Notebook Applications Device Package Shipping† ORDERING INFORMATION NCP5222MNR2G QFN28 (Pb−Free) 4000 / Tape & Reel QFN28 CASE 485AR MARKING DIAGRAM http://onsemi.com A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package (Note: Microdot may be in either location) †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. DL2 DL1 SWN2 BST2 CS1−/ Vo1 CS1+ EN1/ S KIP1 BST1 28 27 26 25 24 23 22 8 9 10 11 12 13 14 2 3 5 6 21 20 18 16 15 1 4 7 19 AGND 29 17 NCP5222 CS2−/ Vo2 CS2+ EN2/ SKIP2 DH2 DH1 SWN1 (Top View) PIN CONNECTIONS 1 N5222 ALYWG G |
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