ISL6526, ISL6526A Data Sheet September 30, 2015 FN9055.12 Single Synchronous Buck Pulse-Width Features Modulation (PWM) Controller Operates from 3.3V to 5V Input The ISL6526, ISL6526A make simple work out of 0.8V to V Output Range IN implementing a complete control and protection scheme for - 0.8V Internal Reference a DC/DC stepdown converter. Designed to drive N-Channel - 1.5% Over Load, Line Voltage and Temperature MOSFETs in a synchronous buck topology, the ISL6526, ISL6526A integrate the control, output adjustment, Drives N-Channel MOSFETs monitoring and protection functions into a single package. Simple Single-Loop Control Design The ISL6526, ISL6526A provide simple, single feedback - Voltage-Mode PWM Control loop, voltage-mode control with fast transient response. The Fast Transient Response output voltage can be precisely regulated to as low as 0.8V, - High-Bandwidth Error Amplifier with a maximum tolerance of 1.5% over-temperature and - Full 0% to 100% Duty Cycle line voltage variations. A fixed frequency oscillator reduces design complexity, while balancing typical application cost Lossless, Programmable Overcurrent Protection and efficiency. - Uses Upper MOSFETs r DS(on) The error amplifier features a 15MHz gain-bandwidth Converter can Source and Sink Current product and 6V/s slew rate which enables high converter Small Converter Size bandwidth for fast transient performance. The resulting - Internal Fixed Frequency Oscillator PWM duty cycles range from 0% to 100%. - ISL6526: 300kHz Protection from overcurrent conditions is provided by - ISL6526A: 600kHz monitoring the r of the upper MOSFET to inhibit PWM DS(ON) Internal Soft-Start operation appropriately. This approach simplifies the implementation and improves efficiency by eliminating the 14 Ld SOIC or 16 Ld 5x5 QFN need for a current sense resistor. 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 CAUTION: These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1 1-888-INTERSIL or 1-888-468-3774 Copyright Intersil Americas LLC 2001-2005, 2007, 2008, 2014, 2015. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. 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. Submit Document Feedback FN9055.12 2 September 30, 2015