The LTC
The LTC4020 is a high voltage power manager providing PowerPath™ instant-on operation and high efficiency battery charging over a wide voltage range. An onboard buck-boost DC/DC controller operates with battery and/or system voltages above, below, or equal to the input voltage.
The device seamlessly manages power distribution between battery and converter outputs in response to load variations, battery charge requirements, and input power supply limitations. It supports constant-current/constant-voltage (CC/CV) charging algorithms as well as an optimized 4-step, 3-stage lead-acid battery charge profile.
| Input Voltage Range | 4.5V to 55V |
|---|---|
| Output Voltage | Up to 55V |
| Operating Junction Temperature | -40 °C to 125°C |
| Package Type | 38-Lead Plastic QFN (5mm × 7mm) |
| Charge Algorithms | CC/CV, CC, or optimized 4-step lead-acid profile |
| Float Voltage Accuracy | ±0.5% |
The device supports Li-Ion and lead-acid charge algorithms.
No, its instant-on operation ensures system load power even with a fully discharged battery.
The device accepts inputs from 4.5V to 55V.