Analog Devices / Maxim Integrated MAX1836/MAX1837降压转换器
Maxim MAX1836/MAX1837降压转换器是高效降压转换器，输入电源电压高达24V，可提供3.3V或5V预设输出电压。借助外部反馈电阻器，输出电压可在1.25V至VIN范围内进行调节。内部限流开关MOSFET可提供高达125mA (MAX1836)或250mA (MAX1837)的负载电流。该器件采用独特的限流控制方案，工作占空比最高达100%，因此可最大限度地减小压差（100mA时为120mV）。另外，该控制方案可将轻负载下的电源电流降低至12µA。由于该器件的开关频率高，因此可使用微型表面贴装电感器和输出电容器。
The Analog Devices MAX1836 and MAX1837 Step-Down Converters are available in compact 6-pin SOT23 and TDFN packages, making them ideal for low-cost, low-power, space-sensitive applications.
特性
- 4.5V to 24V input voltage range
- Preset 3.3V or 5V output
- Adjustable output from 1.25V to VIN
- Output currents up to 125mA (MAX1836) or 250mA (MAX1837)
- Efficiency over 90%
- 12µA quiescent current
- 3µA shutdown current
- 100% maximum duty cycle for low dropout
- -40°C to +85°C operating temperature range
- Package options
- SOT23-6
- TDFN-EP-6
应用
- 4mA to 20mA loop power supplies
- 9V battery systems
- Backup supplies
- Distributed power systems
- Handheld devices
- Industrial control supplies
- Notebook computers
- Tablets
功能图
Typical Application Circuit
Pin Designations
发布日期: 2016-08-08
| 更新日期: 2023-04-18