Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

The ISL6526, ISL6526A make simple work out of implementing a complete control and protection scheme for a DC/DC stepdown converter. Designed to drive N-Channel MOSFETs in a synchronous buck topology, the ISL6526, ISL6526A integrate the control, output adjustment, monitoring and protection functions into a single package.

Features

• Operates from 3.3V to 5V Input

• 0.8V to VIN Output Range

- 0.8V Internal Reference

- ±1.5 Over Load, Line Voltage and Temperature

• Drives N-Channel MOSFETs

• Simple Single-Loop Control Design

- Voltage-Mode PWM Control

• Fast Transient Response

- High-Bandwidth Error Amplifier

- Full 0 to 100 Duty Cycle

• Lossless, Programmable Overcurrent Protection

- Uses Upper MOSFET’s rDS(on)

• Converter can Source and Sink Current

• Small Converter Size

- Internal Fixed Frequency Oscillator

- ISL6526: 300kHz

- ISL6526A: 600kHz

• 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

ISL6526CBZ-T属于集成电路（IC） > PMIC - 稳压器 - DC DC 开关式控制器。瑞萨科技有限公司制造生产的ISL6526CBZ-TDC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。