数据手册：MAX17505 Industry's Only 60V, 1.7A Internal FET Synchronous Buck Converter .pdf [英文Rev.0(PDF,819.3kB)]
{状况：生产中。}The MAX17505 high-efficiency, high-voltage, synchronously rectified step-down converter with dual integrated MOSFETs operates over a 4.5V to 60V input. It delivers up to 1.7A and 0.9V to 90%VIN output voltage. Built-in compensation across the output voltage range eliminates the need for external components. The feedback (FB) regulation accuracy over -40°C to +125°C is ±1.1%. The device is available in a compact (4mm x 4mm) TQFN lead(Pb)-free package with an exposed pad. Simulation models are available. The device features a peak-current-mode control architecture with a MODE feature that can be used to operate the device in pulse-width modulation (PWM), pulse-frequency modulation (PFM), or discontinuous-conduction mode (DCM) control schemes. PWM operation provides constant frequency operation at all loads, and is useful in applications sensitive to switching frequency. PFM operation disables negative inductor current and additionally skips pulses at light loads for high efficiency. DCM features constant frequency operation down to lighter loads than PFM mode, by not skipping pulses but only disabling negative inductor current at light loads. DCM operation offers efficiency performance that lies between PWM and PFM modes. The low-resistance, on-chip MOSFETs ensure high efficiency at full load and simplify the layout. A programmable soft-start feature allows users to reduce input inrush current. The device also incorporates an output enable/undervoltage lockout pin (EN/UVLO) that allows the user to turn on the part at the desired input-voltage level. An open-drain active-low RESET pin provides a delayed power-good signal to the system upon achieving successful regulation of the output voltage.
产品关键特性
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Typical Application Circuit
芯片订购型号
| 订购型号 | 产品状态 | 封装形式 | 工作温度 | RoHS/无铅 |
| MAX17505ATP+ | 生产中 | TQFN；20引脚；16.8mm²封装信息 | -40°C至+125°C | RoHS/无铅：无铅材料分析 |
| MAX17505ATP+T | 生产中 | TQFN；20引脚；16.8mm²封装信息 | -40°C至+125°C | RoHS/无铅：无铅材料分析 |
| MAX17505EVKITA# | 生产中 | KIT；封装信息 | 参考数据资料 | |
| MAX17505EVKITB# | 生产中 | KIT；封装信息 | 参考数据资料 |
功能接近器件
| MAX17503 | 4.5V-60V, 2.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation |
| MAX17504 | 4.5V–60V、3.5A、高效率、同步降压DC-DC转换器，带内部补偿 |
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