Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
RENESAS ISL81801FRTZ-T ISL81801FRTZ
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- RENESAS ISL81801FRTZ-T
- Type
- RENESAS
- Minimum package
- 1500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- RENESAS
- Electronic Component
- ISL81801FRTZ-T
- Electronic Component
- 1
- Package
- TQFN-32(5X5)
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.107g
- Electronic Component
- 1
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0257394549
- Operating Temperature
- 40℃~+125℃
- Operating Voltage
- 4.5V~80V
- Switching Frequency
- 100kHz~600kHz
- Electronic Component
- Electronic Component
- Output Voltage
- 800mV~80V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ISL81801FRTZ-T 产品概述
一、主要特点
ISL81801FRTZ-T 是瑞萨(Renesas)推出的一款高压升降压型（降压-升压）DC-DC控制芯片，支持宽输入电压范围4.5V至80V、输出可调从0.8V至80V，开关频率可在100kHz至600kHz范围内设置。器件采用TQFN-32 (5×5mm) 封装，支持同步整流并需配合外置功率MOSFET实现高效率能量转换。工作温度范围为-40℃至+125℃，适用于工业及车规级周边应用。
二、功能与性能亮点
- 宽输入/输出范围：适配大范围电源（电池组、发电机、汽车辅助电源等），输出可按需求在800mV至80V间调节。
- 降压-升压拓扑：在输入电压高于或低于目标输出电压时均可稳定维持输出，适用于输入电压波动明显的系统。
- 可调开关频率：100kHz–600kHz的工作频率允许在效率、器件尺寸（电感、电容）与EMI之间进行权衡。
- 同步整流：与外置N沟MOSFET配合，可显著降低导通损耗，提升转换效率。
- 外置开关管：给予用户灵活的功率器件选型空间，便于针对功率、耐压与Rds(on)优化设计。
三、典型应用场景
- 汽车电源管理、车载充电器与辅助电源（需注意器件耐压与车规要求）
- 工业控制系统、通信设备的稳压模块
- 分布式电源、UPS前端或电池管理系统（涉及升压/降压转换）
四、设计与布局注意事项
- MOSFET选型：建议选用耐压裕量≥100V的外置N沟MOSFET，以应对最大80V输入及瞬态冲击；关注低Rds(on)与门电荷平衡效率与驱动能力。
- 电感与电容：根据最大电流和频率选择电感电流额定值不致饱和；输入/输出需采用低ESR、高耐压电解或固态电容以降低纹波与发热。
- PCB走线：将高di/dt回路（MOSFET、二极管/同步管、电感、输入电容）尽量缩短并靠近芯片布局，热垫与地层做好散热通道。
- 热管理：TQFN底部热焊盘必须焊接到大铜箔散热层，必要时考虑散热孔与散热片。
五、保护与调试建议
推荐在系统初期调试时使用限流电源与外部保护（输入浪涌抑制、TVS、熔断器）。芯片可与外部取样电阻、电压反馈网络、补偿元件配合实现稳定闭环控制；详细的保护特性（欠压锁定、过流保护、软启动、热关断等）与典型应用电路请参阅ISL81801FRTZ-T正式数据手册以获得完整参数与参考设计。
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