The ISL8026, ISL8026A are highly efficient, monolithic, synchronous step-down DC/DC converters that can deliver 6A of continuous output current from a 2. 5V to 5. 5V input supply. The devices use current mode control architecture to deliver a very low duty cycle operation at high frequency with fast transient response and excellent loop stability. The ISL8026, ISL8026A integrate a very low ON-resistance P-Channel (36mΩ) high-side FET and N-Channel (13mΩ) low-side FET to maximize efficiency and minimize external component count. The 100% duty-cycle operation allows less than 180mV dropout voltage at 6A output current. The operation frequency of the Pulse-width Modulator (PWM) is adjustable from 500kHz to 4MHz. The default switching frequency, which is set by connecting the FS pin high, is 1MHz for the ISL8026 and 2MHz for the ISL8026A. The ISL8026, ISL8026A can be configured for discontinuous or forced continuous operation at light load. Forced continuous operation reduces noise and RF interference, while discontinuous mode provides higher efficiency by reducing switching losses at light loads. Fault protection is provided by internal hiccup mode current limiting during short-circuit and overcurrent conditions. Other protection, such as overvoltage and over-temperature, are also integrated into the device. A power-good output voltage monitor indicates when the output is in regulation. The ISL8026, ISL8026A offer a 1ms Power-good (PG) timer at power-up. When in shutdown, the ISL8026, ISL8026A discharge the output capacitor through an internal soft-stop switch. Other features include internal fixed or adjustable soft-start and internal/external compensation. The ISL8026, ISL8026A are offered in a space saving 16 Ld 3x3 Pb-free TQFN package with an exposed pad for improved thermal performance and 0. 8mm maximum height. The complete converter occupies less than 0. 22 in2 area.

特性

  • 2.5V to 5.5V input voltage range
  • Very low ON-resistance FET's - P-channel 36mΩ and N-channel 13mΩ typical values
  • High efficiency synchronous buck regulator with up to 95% efficiency
  • 1% reference accuracy over load/line/temperature (-40°C to +85°C)
  • Internal soft-start: 1ms or adjustable
  • Soft-stop output discharge during disable
  • Adjustable frequency from 500kHz to 4MHz - default at 1MHz (ISL8026) or 2MHz (ISL8026A)
  • External synchronization up to 4MHz
  • Over-temperature, overcurrent, overvoltage and negative overcurrent protection

description文档

文档标题 language 类型 文档格式 文件大小 日期
数据手册与勘误表
star ISL8026, ISL8026A Datasheet 数据手册 PDF 1.47 MB
使用指南与说明
ISL8026xEVAL3Z User Guide 手册 - 开发工具 PDF 861 KB
应用指南 & 白皮书
Five Easy Steps to Create a Multi-Load Power Solution 白皮书 PDF 846 KB
AN9208: High Frequency Power Converters 应用文档 PDF 592 KB
AN1681: Grounding Techniques 应用文档 PDF 509 KB
AN1684: Nonideality of Ground 应用文档 PDF 397 KB
AN9210: A New Pspice Subcircuit For The Power MOSFET Featuring Global Temperature Options 应用文档 PDF 650 KB
AN9209: A Spice-2 Subcircuit Representation For Power MOSFETs Using Empirical Methods 应用文档 PDF 387 KB
AN7244: Understanding Power MOSFETs 应用文档 PDF 349 KB

file_download下载

文档标题 language 类型 文档格式 文件大小 日期
Hardware
ISL8026AEVAL3Z Design Files PCB设计文档 ZIP 706 KB

memory开发板与套件

器件号 文档标题 类型 Company
ISL8026AEVAL3Z Compact Synchronous Buck Regulator Evaluation Board 评估 Renesas
ISL8026EVAL3Z Compact Synchronous Buck Regulator Evaluation Board 评估 Renesas