ISL6522CRZ Renesas

DATASHEET ISL6522 FN9030 Rev 8.00 Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller Mar 10, 2006 The ISL6522 provides complete control and protection for a Features DC-DC converter optimized for high-performance micro- Drives two N-Channel MOSFETs processor applications. It is designed to drive two N-Channel MOSFETs in a synchronous rectified buck topology. The Operates from +5V or +12V input ISL6522 integrates all of the control, output adjustment, Simple single-loop control design monitoring and protection functions into a single package. - Voltage-mode PWM control The output voltage of the converter can be precisely Fast transient response regulated to as low as 0.8V, with a maximum tolerance of - High-bandwidth error amplifier 1% over temperature and line voltage variations. - Full 0100% duty ratio The ISL6522 provides simple, single feedback loop, voltage- Excellent output voltage regulation mode control with fast transient response. It includes a - 0.8V internal reference 200kHz free-running triangle-wave oscillator that is - 1% over line voltage and temperature adjustable from below 50kHz to over 1MHz. The error amplifier features a 15MHz gain-bandwidth product and Overcurrent fault monitor 6V/ s slew rate which enables high converter bandwidth for - Does not require extra current sensing element fast transient performance. The resulting PWM duty ratio - Uses MOSFETs r DS(ON) ranges from 0100%. Converter can source and sink current The ISL6522 protects against overcurrent conditions by Small converter size inhibiting PWM operation. The ISL6522 monitors the current - Constant frequency operation by using the r of the upper MOSFET which eliminates DS(ON) - 200kHz free-running oscillator programmable from the need for a current sensing resistor. 50kHz to over 1MHz 14-lead SOIC and TSSOP package and 16-lead 5x5mm Pinouts SOIC, TSSOP TOP VIEW QFN Package QFN Package 14 RT 1 VCC - Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat 13 PVCC OCSET 2 No Leads-Product Outline. SS 12 3 LGATE - Near Chip-Scale Package Footprint Improves PCB COMP 11 4 PGND Efficiency and Thinner in Profile FB 10 5 BOOT Pb-free plus anneal available (RoHS compliant) EN 6 9 UGATE GND 8 7 PHASE Applications QFN Power supply for Pentium , Pentium Pro, PowerPC and TOP VIEW AlphaPC microprocessors High-power 5V to 3.xV DC-DC regulators Low-voltage distributed power supplies 16 15 14 13 SS 1 12 PVCC COMP 2 11 LGATE GND 10 FB 3 PGND EN 4 9 BOOT 576 8 FN9030 Rev 8.00 Page 1 of 16 Mar 10, 2006 FOR NEW DESIGNS, INTERSIL RECOMMENDS DROP-IN ENHANCED PRODUCT - ISL6535 NC NC GND OCSET PHASE RT VCC UGATEISL6522 Ordering Information Ordering Information (Continued) PART PART TEMP. PKG. PART PART TEMP. PKG. NUMBER MARKING RANGE (C) PACKAGE DWG. NUMBER MARKING RANGE (C) PACKAGE DWG. ISL6522CB ISL6522CB 0 to 70 14 Ld SOIC M14.15 ISL6522CR ISL6522CR 0 to 70 16 Ld 5x5 QFN L16.5x5B ISL6522CBZ 6522CBZ 0 to 70 14 Ld SOIC M14.15 ISL6522CRZ ISL6522CRZ 0 to 70 16 Ld 5x5 QFN L16.5x5B (Note) (Pb-free) (Note) (Pb-free) ISL6522CBZA 6522CBZ 0 to 70 14 Ld SOIC M14.15 ISL6522IR ISL6522IR -40 to 85 16 Ld 5x5 QFN L16.5x5B (Note) (Pb-free) ISL6522IRZ ISL6522IRZ -40 to 85 16 Ld 5x5 QFN L16.5x5B ISL6522IB ISL6522IB -40 to 85 14 Ld SOIC M14.15 (Note) (Pb-free) ISL6522IBZ 6522IBZ -40 to 85 14 Ld SOIC M14.15 NOTE: Intersil Pb-free plus anneal products employ special Pb-free (Note) (Pb-free) material sets molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible ISL6522CV ISL6522CV 0 to 70 14 Ld TSSOP M14.173 with both SnPb and Pb-free soldering operations. Intersil Pb-free ISL6522CVZ ISL6522CVZ 0 to 70 14 Ld TSSOP M14.173 products are MSL classified at Pb-free peak reflow temperatures that (Note) (Pb-free) meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. ISL6522IV ISL6522IV -40 to 85 14 Ld TSSOP M14.173 Add -T for tape and reel. ISL6522IVZ ISL6522IVZ -40 to 85 14 Ld TSSOP M14.173 (Note) (Pb-free) Typical Application 12V +5V OR +12V V CC OCSET SS MONITOR AND EN PROTECTION BOOT RT OSC UGATE PHASE ISL6522 +V O REF +12V PV CC LGATE - + + FB PGND - COMP GND FN9030 Rev 8.00 Page 2 of 16 Mar 10, 2006