ISL8104IBZ

DATASHEET ISL8104 FN9257 Rev 2.00 8V to 14V, Single-Phase Synchronous Buck Pulse-Width Modulation (PWM) March 7, 2008 Controller With Integrated Gate Drivers The ISL8104 is a 8V to 14V synchronous PWM controller Features with integrated MOSFET drivers. The controller features the +8V 5% to +14V 10% Bias Voltage Range ability to safely start-up into prebiased output loads and - 1.5V to 15.4V Input Voltage Range provides protection against overcurrent fault events. Overcurrent protection is implemented using top-side 0.597V Internal Reference Voltage MOSFET r sensing, eliminating the need for a current - 1.0% Over the Commercial Temperature Range DS(ON) sensing resistor. - 1.5% Over the Industrial Temperature Range Voltage-Mode PWM Control with Dual-Edge Modulation The ISL8104 employs voltage-mode control with dual-edge 14V High Speed N-Channel MOSFET Gate Drivers modulation to achieve fast transient response. The operating - 2.0A Source/3A Sink at 14V Bottom-Side Gate Drive frequency is adjustable from 50kHz to 1.5MHz with full (0% - 1.25A Source/2A Sink at 14V Top-Side Gate Drive to 100%) PWM duty cycle capability. The error amplifier features a 15MHz (typ) gain-bandwidth product and 6V/s Fast Transient Response slew rate enabling high converter bandwidth. - 15MHz (typ) Gain-Bandwidth Error Amplifier with 6V/s slew rate The output voltage of the converter can be regulated to as - Full 0% to 100% Duty Cycle Support low as 0.597V with a tolerance of 1.0% over the Programmable Operating Frequency from 50kHz to commercial temperature range (0C to +70C), and 1.5% 1.5MHz over industrial temperature range (-40C to +85C). Lossless Programmable Overcurrent Protection Provided in the QFN package, a SS pin and REFIN pin - Top-Side MOSFETs r Sensing DS(ON) enable supply sequencing and voltage tracking functionality. - ~120ns Blanking Time Pinouts Sourcing and Sinking Current Capability ISL8104 (16 LD QFN) Support for Start-Up into Prebiased Loads TOP VIEW Soft-Start Done and an External Reference Pin for Tracking Applications are Available in the QFN Package Pb-free available (RoHS compliant) 16 15 14 13 Applications SS 1 12 PVCC Test and Measurement Instruments COMP 2 11 BGATE Distributed DC/DC Power Architecture FB 3 10 PGND Industrial Applications EN 4 9 BOOT Telecom/Datacom Applications 576 8 Ordering Information PART NUMBER PART TEMP. PACKAGE PKG. (Note) MARKING RANGE (C) (Pb-free) DWG. ISL8104CBZ* 8104CBZ 0 to +70 14 Ld SOIC M14.15 ISL8104 (14 LD SOIC) TOP VIEW ISL8104IBZ* 8104IBZ -40 to +85 14 Ld SOIC M14.15 ISL8104CRZ* 81 04CRZ 0 to +70 16 Ld 4x4 QFN L16.4x4 FSET 1 14 VCC ISL8104IRZ* 81 04IRZ -40 to +85 16 Ld 4x4 QFN L16.4x4 TSOC 2 13 PVCC ISL8104EVAL1Z Evaluation Board SS 3 12 BGATE ISL8104EVAL2Z Evaluation Board COMP 4 11 PGND *Add -T suffix for tape and reel. Please refer to TB347 for details on FB 10 BOOT 5 reel specifications. 9 EN 6 TGATE NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets molding compounds/die attach materials 8 GND 7 LX 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. FN9257 Rev 2.00 Page 1 of 14 March 7, 2008 REFIN SSDONE TSOC GND LX FSET TGATE VCCISL8104 FN9257 Rev 2.00 Page 2 of 14 March 7, 2008 Block Diagram SS EN VCC TSOC INTERNAL REGULATOR 200A POWER-ON RESET (POR) 30 A BOOT SOURCE OCP TGATE SOFT-START SSDONE AND (QFN ONLY) FAULT LOGIC GATE CONTROL LX FSET OSCILLATOR LOGIC PWM 6A REFERENCE PVCC V = 0.597 V REF EA REFIN BGATE (QFN ONLY) GND PGND COMP FB