ADI亚德诺_LTC4075HVX_产品介绍

ADI亚德诺 LTC4075HVX 产品介绍

2026-03-09 0次

特性

22V Maximum Voltage for Wall Adapter and USB Inputs
Charge Single-Cell Li-Ion Batteries from Wall Adapter and USB Inputs
Automatic Input Power Detection and Selection
Charge Current Programmable up to 950mA from Wall Adapter Input
Overvoltage Lockout for Wall Adapter and USB Inputs
No External MOSFET, Sense Resistor or Blocking Diode Needed
Thermal Regulation Maximizes Charge Rate Without Risk of Overheating*

Preset Charge Voltage with ±0.35% Accuracy
Programmable Charge Current Termination
40µA USB Suspend Current in Shutdown
Independent “Power Present” Status Outputs
Charge Status Output
Automatic Recharge
Available in a Thermally Enhanced, Low Profile (0.75mm) 10-Lead (3mm × 3mm) DFN Package

The LTC4075HVX is a standalone linear charger that is capable of charging a single-cell Li-Ion/Polymer battery from both wall adapter and USB inputs. The charger can detect power at the inputs and automatically select the appropriate power source for charging.

产品详情和应用

No external sense resistor or blocking diode is required for charging due to the internal MOSFET architecture. The LTC4075HVX features a maximum 22V rating for both wall adapter and USB inputs although charging stops if the selected power source exceeds the overvoltage limit. Internal thermal feedback regulates the battery charge current to maintain a constant die temperature during high power operation or high ambient temperature conditions. The float voltage is fixed at 4.2V and the charge current is programmed with an external resistor. The LTC4075HVX terminates the charge cycle when the charge current drops below the programmed termination threshold after the final float voltage is reached.

Other features include automatic recharge, undervoltage lockout, charge status outputs, and “power present” status outputs to indicate the presence of wall adapter or USB power. No trickle charge allows full current from the charger when a load is connected directly to the battery.

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