The ISL8023, ISL8024 are highly efficient, monolithic, synchronous step-down DC/DC converters that can deliver 3A (ISL8023) or 4A (ISL8024) of continuous output current from a 2. 7V to 5. 5V input supply. The devices use current mode control architecture to deliver very low duty cycle operation at high frequency with fast transient response and excellent loop stability. The ISL8023 and ISL8024 integrate a very low On-resistance P-Channel (45mΩ) high side FET and N-Channel (19mΩ) low side FET to maximize efficiency and minimize external component count. The 100% duty-cycle operation allows less than 200mV dropout voltage at 4A output current. The operation frequency of the pulse-width modulator (PWM) is adjustable from 500kHz to 4MHz. The default switching frequency of 1MHz is set by connecting the FS pin high, which allows for the use of small external components. The ISL8023, ISL8024 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 ISL8023, ISL8024 offer a 1ms Power-Good (PG) timer at power-up. When in shutdown, ISL8023, ISL8024 discharges the output capacitor through an internal soft-stop switch. Other features include internal fixed or adjustable soft-start and internal/external compensation. The ISL8023 and ISL8024 are offered in a space saving 16 Ld 3x3 Pb-free QFN package with an exposed pad for improved thermal performance and 1mm maximum height. The complete converter occupies less than 0. 22 in2 area. Various fixed output voltages are available upon request. See the “Ordering Information” on page 4 for more details.


  • 2.7V to 5.5V input voltage range
  • Very low on-resistance FET's - P-Channel 45mΩ and N-Channel 19mΩ typical values
  • High efficiency synchronous buck regulator with up to 95% efficiency
  • 0.8% reference accuracy over-temperature/load/line
  • Complete BOM with as few as 3 external parts
  • Start-up with pre-biased output
  • Internal soft-start - 1ms or adjustable
  • Soft-stop output discharge during disabled
  • Adjustable frequency from 500kHz to 4MHz - default at 1MHz (8023/24), 2MHz (8023A/24A)
  • External synchronization up to 4MHz
  • Over-temperature, Overcurrent, Overvoltage and negative overcurrent protection
  • Tiny 3x3 QFN package


  • DC/DC POL modules
  • μC/µP, FPGA and DSP power
  • Plug-in DC/DC modules for routers and switchers
  • Portable instruments
  • Test and measurement systems
  • Li-ion battery powered devices


文档标题 language 类型 文档格式 文件大小 日期
star ISL8023, ISL8024 Datasheet 日本語 数据手册 PDF 1.09 MB
AN9208: High Frequency Power Converters 应用文档 PDF 592 KB
AN1965: Effectively Using the Intersil Small Form Factor Power Management Evaluation Boards 应用文档 PDF 2.35 MB
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
PCN14021 - Alternate Manufacturing Facility for Assembly of the Listed Intersil QFN/TQFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li , Taiwan 产品变更通告 PDF 139 KB
PCN13060 - Test Site Change for the Listed Intersil Products 产品变更通告 PDF 223 KB
PCN13024A - Alternate Manufacturing Site for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering - Chung-Li, Taiwan (ASECL) 产品变更通告 PDF 192 KB
PCN13024 - Alternate Manufacturing Site for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering - Chung-Li, Taiwan (ASECL 产品变更通告 PDF 183 KB
ISL8023 iSim:PE Model 原理图 SXSCH 232 KB
Five Easy Steps to Create a Multi-Load Power Solution 白皮书 PDF 846 KB



Title Type 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


器件号 文档标题 类型 Company
ISL8023AEVAL3Z Compact Synchronous Buck Regulator Evaluation Board 评估 Renesas
ISL8023EVAL3Z Compact Synchronous Buck Regulator Evaluation Board 评估 Renesas