データシートサーチシステム |
|
FAN5090 データシート(PDF) 1 Page - Fairchild Semiconductor |
|
FAN5090 データシート(HTML) 1 Page - Fairchild Semiconductor |
1 / 17 page www.fairchildsemi.com REV. 1.0.1 9/16/03 Pentium is a registered trademark of Intel Corporation. Athlon is a registered trademark of AMD. Programmable Active Droop is a trademark of Fairchild Semiconductor. Block Diagram 22 VID0 11 10 14 13 17 16 24 - + OSC Digital Control Power Good 5-Bit DAC VID1 VID2 VID3 VID4 12 3 4 5 +12V PWRGD - + ENABLE/SS VO AGND 7 DROOP/E* 18 6 +12V 15 5V Reg BYPASS 23 RT +12V +12V 12 8 9 21 +12V Digital Control - + - + - + 19 ILIM 20 BOOT A BOOT B GNDA Current Limit UVL O FAN5090 Two Phase Interleaved Synchronous Buck Converter for VRM 9.x Applications Features • Programmable output from 1.10V to 1.85V in 25mV steps using an integrated 5-bit DAC • Two interleaved synchronous phases for maximum performance • 100nsec transient response time • Built-in current sharing between phases • Remote sense • Programmable Active Droop (Voltage Positioning) • Programmable switching frequency from 100KHz to 300KHz per phase • Adaptive delay gate switching • Integrated high-current gate drivers • Integrated Power Good, OV, UV, Enable/Soft Start functions • Drives N-channel MOSFETs • Operation optimized for 12V operation • Overcurrent protection using MOSFET sensing • 24 pin TSSOP package Applications • Power supply for Pentium IV • Power supply for Athlon • VRM for Pentium IV processor • Programmable step-down power supply Description The FAN5090 is a synchronous two-phase DC-DC controller IC which provides a highly accurate, programmable output voltage for VRM 9.x processors. Two interleaved synchro- nous buck regulator phases with built-in current sharing operate 180° out of phase to provide the fast transient response needed to satisfy high current applications while minimizing external components. The FAN5090 features Programmable Active Droop for transient response with minimum output capacitance. It has integrated high-current gate drivers, with adaptive delay gate switching, eliminating the need for external drive devices. The FAN5090 uses a 5-bit D/A converter to program the output voltage from 1.10V to 1.85V in 25mV steps with an accuracy of 1%. The FAN5090 uses a high level of integra- tion to deliver load currents in excess of 50A from a 12V source with minimal external circuitry. The FAN5090 also offers integrated functions including Power Good, Output Enable/Soft Start, under-voltage lock- out, over-voltage protection, and adjustable current limiting with independent current sense on each phase. It is available in a 24 pin TSSOP package. |
同様の部品番号 - FAN5090 |
|
同様の説明 - FAN5090 |
|
|
リンク URL |
プライバシーポリシー |
ALLDATASHEET.JP |
ALLDATASHEETはお客様のビジネスに役立ちますか? [ DONATE ] |
Alldatasheetは | 広告 | お問い合わせ | プライバシーポリシー | リンク交換 | メーカーリスト All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |