瑞萨电子 (Renesas Electronics Corporation)
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ISL85003

有效

高效 3A 同步降压稳压器

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特性

  • 4.5V 至 18V 的输入电压范围
  • 0.8V ±1% 起的可调节输出电压
  • 效率高达 95%
  • 带低压检测测定的集成式自举二极管
  • 电流模式控制
  • DCM/CCM
    • 内部或外部补偿选择
    • 500kHz 切换频率选择
    • ISL85003 具有高达 2MHz 的外部同步
  • ISL85003A 具有可调节软启动时间
  • 开漏 PG 窗口比较器
    • 内置保护
    • 正序及负序过流保护
    • 过压保护及热保护
    • 输入过压保护
  • 小型 12 引脚 3mmx4mm 双方扁平无引线（DFN）封装
查找降压稳压器（集成开关）的其他产品
ISL85003_ISL85003A Functional Diagram

描述

ISL85003 和 ISL85003A 都是同步降压稳压器，集成了高边和低边 FET。 该稳压器可在 4.5V 至 18V 的输入电压范围内工作，并可非常高效地连续输出 3A 电流。 全部采用超小型的 3mmx4mm DFN 封装。 ISL85003 采用 Intersil 专有的晶圆厂工艺设计，以提供超低 rDS(ON) 的 FET，并具有已优化的电流模式控制器。 高边 NFET 的 rDS(ON) 为 65mΩ，而低边 NFET 的 r DS(ON) 为 45mΩ。 借助这两个 FET，该器件可为负载提供非常高效的功率。 ISL85003 可以在 DCM 和 CCM 之间自动切换，以实现 DCM 中的轻负载效率。 CCM 中的开关频率在内部设定为 500kHz。 该器件在宽线路、负载和温度范围内提供 ±1% 的最大静态调节容差。 用户可使用外部电阻器调节输出，可调节低至 0.8V。 将 EN 拉到 0.6V 以上可启动控制器。 稳压器支持预偏置输出。 故障保护功能包括正或负过流条件下的内部电流限制、输出和输入欠压和过压检测以及过温监控电路。

产品参数

属性 值
Topology [Rail 1] Buck
Outputs (#) 1
Input Voltage (Min) [Rail 1] (V) 4.5
Input Voltage (Max) [Rail 1] (V) -
Output Voltage (Min) [Rail 1] (V) 0.8
Output Voltage (Max) [Rail 1] (V) 15
Output Current (Max) [Rail 1] (A) 3
Switching Frequency Range (Typical) (kHz) -
Control Type Current Mode
Peak Efficiency (%) 95
IQ [Rail 1] (µA) 3200
SYNCH Capability Yes
Qualification Level Standard
Temp. Range (°C) -40 to +125°C
Simulation Model Available iSim

封装选项

Pkg. Type Pkg. Dimensions (mm) Lead Count (#) Pitch (mm)
DFN 4.0 x 3.0 x 0.90 12 0.5

应用方框图

Power & Timing System for AI Accelerator Card Block Diagram
AI 加速卡电源和时钟系统
Simple Network Management Protocol Card for UPS Block Diagram
用于远程 UPS 监控的简单网络管理协议卡
简单网络管理协议卡可实现对 UPS 系统的实时监控、警报和控制。
Smart Voice-Controlled Clotheshorse with Connectivity Block Diagram
智能语音控制晾衣架，支持多种连接方式
智能晾衣架系统提供多种控制方式，并具备高效电力管理，轻松晾干衣物。
Smart Toilet Block Diagram
智能马桶
具有遥控和高效加热功能的智能马桶设计，大大提高舒适度和便利性。
Video IP Phone Block Diagram
视频 IP 电话
视频 IP 电话设计，具有 Hi-Fi 高保真音频、降噪、触控显示屏和多功能连接功能。

其他应用

  • 网络及通信设备
  • 工业过程控制
  • 多功能打印机
  • 负载点稳压器
  • 标准 12V 轨道电源
  • 嵌入式计算

当前筛选条件

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Find out how Intersil's high efficient, compact 12V synchronous buck regulator family can meet your power requirements for 12V rails in industrial and infrastructure applications.

Transcript

12V Synchronous Buck Regulator Family

Today I would like to introduce one of the most efficient and compact synchronous buck regulator families in the marketplace today.

There are many 12V rails in industrial applications today that need a buck converter to step the voltage down to a lower voltage and deliver up to 14A. Some of these applications often require a very efficient and compact solution. The highly integrated buck regulators listed here allow the users to meet all these requirements.

The ISL85009, ISL85012 and ISL85014 are pin compatible, very efficient and are able to deliver up to 14A. In applications that need less than 5A, Renesas offers ISL85003 and ISL85005 that are pin compatible. The ISL85009, ISL85012 and ISL85014 can operate from 3.8V to 18V input voltage, and the output voltage can be set as low as 0.6V. This family is highly integrated. The high-side and low-side FETs, with a bootstrap diode and compensation circuits are all integrated which helps to reduce the size, cost and bill of material.

This family is also highly reliable. It has high-side and low-side overcurrent protection, input and output overvoltage protection, over-temperature protection and negative current protection all integrated in the IC. This family also provides full feature sets and design flexibility to customers.

For instance, the selectable OCP scheme feature gives flexibility to the power supply designer to choose between hiccup and latch-off OCP mode, depending on their application requirements. Finally, the ISL85009, ISL85012 and ISL85014 are pin compatible, highly efficient and capable of delivering up to 14A in a very small 3.5mm x 3.5mm TQFN package.

As you see in the efficiency curve here, the ISL85009 provides one of the most efficient solution in the marketplace today. To support our customers with this family, we have developed several evaluation and demo boards.

Supporting tools such as iSim model, PowerCompass, schematic and Gerber files are all available online for this family on our website. 

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