Analog Devices / Maxim Integrated MAX1467x 过压保护器

Maxim MAX1467x 过压保护器可向电路提供高达 +28V_{DC 的正向电压故障保护。}。这些器件具有 65mΩ(典型值)和 WLP 封装导通电阻(RON)内场效应管，可有效降低器件上的电压降。当输入电压超出过压阈值时，内场效应管关闭，以防对受保护器件造成损坏。设计人员可通过可选购的外部电阻器，将过压保护阈值调整到 5V 和 22V 之间的任一电压值。该系列还具有反向偏置阻止功能。与其他电压调节器不同的是，MAX1467x 件被禁用时，施加在 OUT 上的电压不反馈回 IN。从 -40℃ 到 +85℃ 的宽幅温度范围，使 Maxim MAX1467x 过压保护器非常适用于平板、智能手机、电子阅读器、笔记本电脑及 USB 充电插座中。

The series also features a reverse bias-blocking capability. Unlike other voltage regulators, when the MAX1467x device is disabled, the voltage applied to OUT does not feed back into IN. An extended -40°C to +85°C temperature range makes the ADI MAX1467x Overvoltage Protectors ideal for tablets, smartphones, E-readers, PC notebooks, and charging USB hosts.

特性

Protect high-power portable devices
- Wide operating input voltage protection from +3V to +28V
- +100V Surge capability
- 4.5A Continuous current capability (WLP Package)
- Integrated 65mΩ (typ) N-channel MOSFET switch (WLP package)
Flexible overvoltage protection design
- Wide +5V to +22V adjustable OVLO threshold range
- Active-low ACOK and ACOK indicate input is in range
- OTG Enable allows OUT to supply IN
- Preset accurate internal OVLO thresholds:
  - 6.8V ±3% (MAX14670)
  - 15.5V ±3% (MAX14671)
  - 5.825V ±3% (MAX14672)

Additional protection features increase system reliability
- OUT-IN reverse bias blocking capability
- Soft-start to mnimize inrush current
- Internal 15ms startup debounce
- Thermal shutdown protection
Space saving
- 15-Bump, 1.6mm x 2.1mm, WLP package
- 10-Pin, 3mm x 3mm, TDFN package