LM3481
- LM3481QMM are Automotive-Grade Products
That are AEC-Q100 Grade 1 Qualified (–40°C to
+125°C Operating Junction Temperature) - 10-Lead VSSOP Package
- Internal Push-Pull Driver With 1-A Peak Current
Capability - Current Limit and Thermal Shutdown
- Frequency Compensation Optimized With a Capacitor
and a Resistor - Internal Softstart
- Current Mode Operation
- Adjustable Undervoltage Lockout With Hysteresis
- Pulse Skipping at Light Loads
- Key Specifications
- Wide Supply Voltage Range of 2.97 V to 48 V
- 100-kHz to 1-MHz Adjustable and Synchronizable
Clock Frequency - ±1.5% (Over Temperature) Internal
Reference - 10-µA Shutdown Current (Over Temperature)
The LM3481 device is a versatile Low-Side N-FET high-performance controller for switching regulators. The device is suitable for use in topologies requiring a low-side FET, such as boost, flyback, SEPIC, and so on. The LM3481 device can be operated at extremely high switching frequencies to reduce the overall solution size. The switching frequency of the LM3481 device can be adjusted to any value between 100kHz and 1MHz by using a single external resistor or by synchronizing it to an external clock. Current mode control provides superior bandwidth and transient response in addition to cycle-by-cycle current limiting. Current limit can be programmed with a single external resistor.
The LM3481 device has built-in protection features such as thermal shutdown, short-circuit protection and overvoltage protection. Power-saving shutdown mode reduces the total supply current to 5 µA and allows power supply sequencing. Internal soft-start limits the inrush current at start-up.
技术文档
设计和开发
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LM3481-FLYBACKEVM — 适用于 LM3481 升压控制器的隔离式反激拓扑评估模块
LM3481EVAL — 具有 12V 输出的高效升压开关控制器评估板
The LM3481 is a current mode, low side N channel FET controller. It can be utilized in numerous configurations including a Boost, Flyback or SEPIC (Single Ended Primary Inductor Converter). This evaluation board demonstrates the flexibility of the LM3481 in a boost topology providing 12 volt output (...)
LM3481SEPICEVAL — LM3481 SEPIC 评估板
The LM3481 SEPIC evaluation board is designed to provide the design engineer with a fully functional power converter solution with two output voltage options. It produces a selectable output voltage of 12 V at 1.25A or 5V at 3A. The switching frequency for the converter is set to 500 kHz. The (...)
LM3481 STARTUP TINA-TI TRANSIENT REFERENCE DESIGN
LM3481 TINA-TI Load Transient Reference Design (Rev. C)
LM3481 TINA-TI Steady State Reference Design (Rev. B)
330mW AC or DC Tiny Flyback Converter Power Supply Reference Design CAD File
FLYBUCK-FLYBACK-DESIGN-CALC — Fly-Buck 和反激式拓扑选择器
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封装 | 引脚数 | 下载 |
---|---|---|
VSSOP (DGS) | 10 | 了解详情 |
订购和质量
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- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 认证摘要
- 持续可靠性监测
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