Battery Charger for 6 Cells of Li-Ion, Li-Pol, NiCd, NiMH battery, 28V input, 28V/4 A charge, QFN-20

LTC4009CUF#PBF - Battery Charger for 6 Cells of Li-Ion, Li-Pol, NiCd, NiMH battery, 28V input, 28V/4 A charge, QFN-20

Image is for illustrative purposes only. Please refer to product description.

Manufacturer Part No:
Order Code:
Technical Datasheet:
See all Technical Docs

Product Overview

The LTC4009CUF#PBF is a constant-current/constant-voltage Battery Charger Controller. It uses a synchronous quasiconstant frequency PWM control architecture that will not generate audible noise with ceramic bulk capacitors. Charge current is set by the combination of external sense, input and programming resistors. With no built-in termination, the LTC4009 family charges a wide range of batteries under external control. It features a fully adjustable output voltage. The device includes AC adapter input current limiting which maximizes the charge rate for a fixed input power level. An external sense resistor programs the input current limit and the ICL status pin indicates when the battery charge current is being reduced as a result of AC adapter current limiting. The CHRG status pin is active during all charging modes, including special indication for low charge current.
  • General purpose battery charger controller
  • Efficient 550kHz Synchronous buck PWM topology
  • ±0.5% Output float voltage accuracy
  • 4% Accurate programmable charge current
  • 3% Accurate programmable AC adapter current limit
  • No audible noise with ceramic capacitors
  • Analog charge current monitor
  • Micropower shutdown


Power Management, Portable Devices, Computers & Computer Peripherals

Product Information

MSL 1 - Unlimited
Find similar products Choose and modify the attributes above to find similar products.

Associated Products

Compare Selected

Related Searches


No Longer Stocked

No longer stocked:: true No Longer Manufactured::

Customer Reviews


Like to see information about this product from other customers?

 Read discussions, blogs, documents from our community members.


Select document type(s) you want to see and click “Apply Filters” button
Post a question to one of our experts or start a discussion and get responses from supplier experts and fellow engineers in our community.