The ISL8088 is a high efficiency, dual synchronous step-down DC/DC regulator that can deliver up to 800mA continuous output current per channel. The supply voltage range of 2. 75V to 5. 5V allows the use of a single Li+ cell, three NiMH cells or a regulated 5V input. The current mode control architecture enables very low duty cycle operation at high frequency with fast transient response and excellent loop stability. The ISL8088 operates at 2. 25MHz switching frequency allowing the use of small, low cost inductors and capacitors. Each channel is optimized for generating an output voltage as low as 0. 6V. The ISL8088 has a user configurable mode of operation-forced PWM mode and PFM/PWM mode. The forced PWM mode operation reduces noise and RF interference while the PFM mode operation provides high efficiency by reducing switching losses at light loads. In PFM mode of operation, both channels draw a total quiescent current of only 30µA hence enabling high light load efficiency in order to maximize battery life. The ISL8088 offers a 1ms Power-Good (PG) to monitor both output at power-up. When shutdown, ISL8088 discharges the outputs capacitor. Other features include internal digital soft-start, enable for power sequence, overcurrent protection, and thermal shutdown. The ISL8088 is offered in a 3mmx3mm 10 Ld DFN package with 1mm maximum height. The complete converter occupies less than 1. 8cm2 area.

特性

  • Internal Current Mode Compensation
  • 100% Maximum Duty Cycle for Lowest Dropout
  • Selectable Forced PWM Mode and PFM Mode
  • External Synchronization up to 4MHz
  • Start-up with Pre-biased Output
  • Soft-Stop Output Discharge During Disabled
  • Internal Digital Soft-Start - 2ms
  • Power-Good (PG) Output with 1ms Delay

应用

  • DC/DC POL Modules
  • µC/µP, FPGA and DSP Power
  • Plug-in DC/DC Modules for Routers and Switchers
  • Test and Measurement Systems
  • Li-ion Battery Power Devices
  • Bar Code Readers

tune产品选择

器件号 Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active DFN Tube 1000
Availability
Active DFN Reel 6000
Availability
Active DFN Reel 250
Availability
Active DFN Reel 1000
Availability

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 ISL8088 Datasheet 日本語 数据手册 PDF 1.88 MB
使用指南与说明
ISL8088EVAL2Z User Guide 手册 - 开发工具 PDF 434 KB
ISL8088EVAL1Z User Guide 手册 - 开发工具 PDF 580 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
其他
ISL8088 iSim:PE Model 原理图 SXSCH 153 KB

file_download下载

文档标题 language 类型 文档格式 文件大小 日期
Hardware
ISL8088EVAL1Z Design Files PCB设计文档 ZIP 232 KB
ISL8088EVAL2Z Design Files PCB设计文档 ZIP 218 KB

select_all软件和工具页面

文档标题 类型 Description Company
iSim:PE Offline Simulation Tool Simulator iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs. Renesas

memory开发板与套件

器件号 文档标题 类型 Company
ISL8088EVAL1Z Dual 800mA Low Quiescent Current 2.25MHz Efficienct Synchronous Buck Regulator Evaluation Board 评估 Renesas
ISL8088EVAL2Z Dual 800mA Low Quiescent Current 2.25MHz Efficienct Synchronous Buck Regulator Evaluation Board 评估 Renesas