DATASHEET ISL6526, ISL6526A FN9055 Rev 12.00 Single Synchronous Buck Pulse-Width Modulation (PWM) Controller Sep 30, 2015 The ISL6526, ISL6526A make simple work out of Features implementing a complete control and protection scheme for Operates from 3.3V to 5V Input a DC/DC stepdown converter. Designed to drive N-Channel MOSFETs in a synchronous buck topology, the ISL6526, 0.8V to V Output Range IN ISL6526A integrate the control, output adjustment, - 0.8V Internal Reference monitoring and protection functions into a single package. - 1.5% Over Load, Line Voltage and Temperature The ISL6526, ISL6526A provide simple, single feedback Drives N-Channel MOSFETs loop, voltage-mode control with fast transient response. The Simple Single-Loop Control Design output voltage can be precisely regulated to as low as 0.8V, - Voltage-Mode PWM Control with a maximum tolerance of 1.5% over-temperature and line voltage variations. A fixed frequency oscillator reduces Fast Transient Response design complexity, while balancing typical application cost - High-Bandwidth Error Amplifier and efficiency. - Full 0% to 100% Duty Cycle The error amplifier features a 15MHz gain-bandwidth Lossless, Programmable Overcurrent Protection product and 6V/s slew rate which enables high converter - Uses Upper MOSFETs r DS(on) bandwidth for fast transient performance. The resulting Converter can Source and Sink Current PWM duty cycles range from 0% to 100%. Small Converter Size Protection from overcurrent conditions is provided by - Internal Fixed Frequency Oscillator monitoring the r of the upper MOSFET to inhibit PWM DS(ON) - ISL6526: 300kHz operation appropriately. This approach simplifies the - ISL6526A: 600kHz implementation and improves efficiency by eliminating the need for a current sense resistor. Internal Soft-Start 14 Ld SOIC or 16 Ld 5x5 QFN QFN Package: - Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No Leads - Package Outline - Near Chip Scale Package Footprint, which Improves PCB Efficiency and has a Thinner Profile Pb-Free (RoHS Compliant) Applications Power Supplies for Microprocessors -PCs - Embedded Controllers Subsystem Power Supplies - PCI/AGP/GTL+ Buses - ACPI Power Control - DDR SDRAM Bus Termination Supply Cable Modems, Set-Top Boxes, and DSL Modems DSP and Core Communications Processor Supplies Memory Supplies Personal Computer Peripherals Industrial Power Supplies 3.3V-Input DC/DC Regulators Low-Voltage Distributed Power Supplies FN9055 Rev 12.00 Page 1 of 18 Sep 30, 2015 NOT RECOMMENDED FOR NEW DESIGNS RECOMMENDED REPLACEMENT PART ISL8105ISL6526, ISL6526A Ordering Information PART NUMBER PART TEMP PKG (Notes 2, 3) MARKING RANGE (C) PACKAGE DWG. ISL6526CBZ 6526CBZ 0 to +70 14 Ld SOIC (Pb-free) M14.15 ISL6526CBZ-T (Note 1) 6526CBZ 0 to +70 14 Ld SOIC (Pb-free) M14.15 ISL6526ACBZ (No longer available, 6526ACBZ 0 to +70 14 Ld SOIC (Pb-free) M14.15 recommended replacement: ISL6526AIRZ) ISL6526ACBZ-T (Note 1) (No longer 6526ACBZ 0 to +70 14 Ld SOIC (Pb-free) M14.15 available, recommended replacement: ISL6526AIRZ-T) ISL6526CRZ (No longer available, ISL6526 CRZ 0 to +70 16 Ld 5x5 QFN (Pb-free) L16.5x5B recommended replacement: ISL6526IRZ) ISL6526CRZ-T (Note 1) (No longer ISL6526 CRZ 0 to +70 16 Ld 5x5 QFN (Pb-free) L16.5x5B available, recommended replacement: ISL6526IRZ-T) ISL6526IBZ 6526IBZ -40 to +85 14 Ld SOIC (Pb-free) M14.15 ISL6526IBZ-T (Note 1) 6526IBZ -40 to +85 14 Ld SOIC (Pb-free) M14.15 ISL6526IRZ ISL 6526IRZ -40 to +85 16 Ld 5x5 QFN (Pb-free) L16.5x5B ISL6526IRZ-T (Note 1) ISL 6526IRZ -40 to +85 16 Ld 5x5 QFN (Pb-free) L16.5x5B ISL6526IRZ-TK (Note 1) ISL 6526IRZ -40 to +85 16 Ld 5x5 QFN (Pb-free) L16.5x5B ISL6526AIRZ ISL65 26AIRZ -40 to +85 16 Ld 5x5 QFN (Pb-free) L16.5x5B ISL6526AIRZ-T (Note 1) ISL65 26AIRZ -40 to +85 16 Ld 5x5 QFN (Pb-free) L16.5x5B ISL6526AIRZ-TK (Note 1) ISL65 26AIRZ -40 to +85 16 Ld 5x5 QFN (Pb-free) L16.5x5B ISL6526EVAL1 ISL6526 SOIC Evaluation Board ISL6526EVAL2 ISL6526 QFN Evaluation Board ISL6526AEVAL1 ISL6526A SOIC Evaluation Board ISL6526AEVAL2 ISL6526A QFN Evaluation Board NOTES: 1. Please refer to TB347 for details on reel specifications. 2. 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. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL6526, ISL6526A. For more information on MSL please see tech brief TB363. FN9055 Rev 12.00 Page 2 of 18 Sep 30, 2015