DATASHEET ISL6609, ISL6609A FN9221 Rev 2.00 Synchronous Rectified MOSFET Driver April 27, 2009 The ISL6609, ISL6609A is a high frequency, MOSFET driver Features optimized to drive two N-Channel power MOSFETs in a Drives Two N-Channel MOSFETs synchronous-rectified buck converter topology. This driver combined with an Intersil ISL63xx or ISL65xx multiphase Adaptive Shoot-Through Protection PWM controller forms a complete single-stage core-voltage 0.4 On-Resistance and 4A Sink Current Capability regulator solution with high efficiency performance at high Supports High Switching Frequency switching frequency for advanced microprocessors. - Fast Output Rise and Fall The IC is biased by a single low voltage supply (5V), - Ultra Low Three-State Hold-Off Time (20ns) minimizing driver switching losses in high MOSFET gate ISL6605 Replacement with Enhanced Performance capacitance and high switching frequency applications. Each driver is capable of driving a 3nF load with less than BOOT Capacitor Overcharge Prevention (ISL6609A) 10ns rise/fall time. Bootstrapping of the upper gate driver is Low V Internal Bootstrap Diode F implemented via an internal low forward drop diode, reducing implementation cost, complexity, and allowing the Low Bias Supply Current use of higher performance, cost effective N-Channel Enable Input and Power-On Reset MOSFETs. Adaptive shoot-through protection is integrated to prevent both MOSFETs from conducting simultaneously. QFN Package - Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat The ISL6609, ISL6609A features 4A typical sink current for No Leads-Product Outline the lower gate driver, enhancing the lower MOSFET gate - Near Chip-Scale Package Footprint Improves PCB hold-down capability during PHASE node rising edge, Efficiency and Thinner in Profile preventing power loss caused by the self turn-on of the lower Pb-Free (RoHS Compliant) MOSFET due to the high dV/dt of the switching node. The ISL6609, ISL6609A also features an input that Applications recognizes a high-impedance state, working together with Core Voltage Supplies for Intel and AMD Intersil multiphase PWM controllers to prevent negative Microprocessors transients on the controlled output voltage when operation is suspended. This feature eliminates the need for the schottky High Frequency Low Profile High Efficiency DC/DC diode that may be utilized in a power system to protect the Converters load from negative output voltage damage. In addition, the High Current Low Voltage DC/DC Converters ISL6609As bootstrap function is designed to prevent the Synchronous Rectification for Isolated Power Supplies BOOT capacitor from overcharging, should excessively large negative swings occur at the transitions of the PHASE node. Related Literature Technical Brief TB363 Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs) FN9221 Rev 2.00 Page 1 of 12 April 27, 2009ISL6609, ISL6609A Ordering Information PART NUMBER PART TEMP. RANGE PACKAGE PKG. (Note) MARKING (C) (Pb-Free) DWG. ISL6609CBZ ISL66 09CBZ 0 to +70 8 Ld SOIC M8.15 ISL6609CBZ-T* ISL66 09CBZ 0 to +70 8 Ld SOIC M8.15 ISL6609CRZ 609Z 0 to +70 8 Ld 3x3 QFN L8.3x3 ISL6609CRZ-T* 609Z 0 to +70 8 Ld 3x3 QFN L8.3x3 ISL6609IBZ ISL66 09IBZ -40 to +85 8 Ld SOIC M8.15 ISL6609IBZ-T* ISL66 09IBZ -40 to +85 8 Ld SOIC M8.15 ISL6609IRZ 09IZ -40 to +85 8 Ld 3x3 QFN L8.3x3 ISL6609IRZ-T* 09IZ -40 to +85 8 Ld 3x3 QFN L8.3x3 ISL6609ACBZ 6609 ACBZ 0 to +70 8 Ld SOIC M8.15 ISL6609ACBZ-T* 6609 ACBZ 0 to +70 8 Ld SOIC M8.15 ISL6609ACRZ 09AZ 0 to +70 8 Ld 3x3 QFN L8.3x3 ISL6609ACRZ-T* 09AZ 0 to +70 8 Ld 3x3 QFN L8.3x3 ISL6609AIBZ 6609 AIBZ -40 to +85 8 Ld SOIC M8.15 ISL6609AIBZ-T* 6609 AIBZ -40 to +85 8 Ld SOIC M8.15 ISL6609AIRZ 9AIZ -40 to +85 8 Ld 3x3 QFN L8.3x3 ISL6609AIRZ-T* 9AIZ -40 to +85 8 Ld 3x3 QFN L8.3x3 ISL6609AIRZ-TK* 9AIZ -40 to +85 8 Ld 3x3 QFN L8.3x3 *Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. Pinouts ISL6609, ISL6609A ISL6609, ISL6609A (8 LD SOIC) (8 LD QFN) TOP VIEW TOP VIEW UGATE 1 8 PHASE BOOT 2 7 EN 7 8 PWM 3 6 VCC BOOT 1 66 EN GND 4 5 LGATE PWM 2 5 VCC 3 4 FN9221 Rev 2.00 Page 2 of 12 April 27, 2009 GND UGATE PHASE LGATE