Datasheet Analog Devices LTC4020EUHF#PBF

LTC4020
55V Buck-Boost
Multi-Chemistry
Battery Charger Features Description Wide Voltage Range: 4.5V to 55V Input, Up to 55V
Output (60V Absolute Maximums)
nn Synchronous Buck-Boost DC/DC Controller
nn Li-Ion and Lead-Acid Charge Algorithms
nn ±0.5% Float Voltage Accuracy
nn ±5% Charge Current Accuracy
nn Instant-On for Heavily Discharged Batteries
nn Ideal Diode Controller Provides Low Loss
PowerPath When Input Power is Limited
nn Input Voltage Regulation for High Impedance Input
Supplies and Solar Panel Peak Power Operation
nn Onboard Timer for Protection and Termination
nn Bad Battery Detection with Auto-Reset
nn NTC Input for Temperature Qualified Charging
nn Binary Coded Open-Collector Status Pins
nn Low Profile (0.75mm) 38-Pin 5mm × 7mm QFN
Package The LTC®4020 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. nn Applications …