Analog Devices Inc. LTC44xx Monolithic PowerPath™ Prioritizers
Analog Devices Inc. LTC44xx Monolithic PowerPath™ Prioritizers feature a low operating current to provide a backup switchover for keeping circuitry alive during power loss conditions. The Analog Devices LTC44xx selects the highest priority valid supply from two inputs. Unlike diode-OR products, little current is drawn from the inactive supply even if its voltage is greater than the active supply.
Features
- 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
Applications
- Low power battery backup
- Portable equipment
- Point-of-sale (POS) equipment
Typical Applications
Published: 2017-04-25
| Updated: 2022-03-11