Analog Devices Inc. LTC44xx单片PowerPath™优先级排序器
Analog Devices Inc. LTC44xx单片PowerPath™优先级排序器的工作电流低，在电源缺失的情况下为保持电路的有效运行提供后备切换。LTC44xx从两路输入中选择最高优先级的有效电源。不同于diode-OR产品，即便其电压大于工作电源，从闲置电源吸收的电流极小。
特性
- Selects highest priority valid supply from two inputs
- Wide 1.8V to 18V operating range
- Internal dual 2Ω, 0.5A switches
- Low 3.6μA operating current
- Low 320nA V2 current when V1 connected to OUT
- Blocks reverse and cross conduction currents
- Reverse supply protection to -15V
- Built-in V2 test with optional V2 disconnect
- ±1.5% accurate adjustable switchover threshold
- V2 freshness seal/ship mode
- ±2.3% accurate V2 monitor and comparator
- Overcurrent and thermal protection
- Thermally enhanced 10-pin or 12-pin 3mm × 3mm
- DFN and 12-lead exposed pad MSOP packages
应用
- Low power battery backup
- Portable equipment
- Point-of-sale (POS) equipment
Typical Applications
发布日期: 2017-04-25
| 更新日期: 2022-03-11