UC3906N Smart Charger Chip

UC3906 Based Smart Battery Chargers have three distinct operating modes: BULK, ABSORPTION and MAINTENANCE. In the BULK mode, the charger limits the maximum charging current to a preset Imax value while monitoring the battery voltage. In the ABSORPTION mode, the charger attempts to elevate the voltage to Voc while monitoring the current. When the current decreases (tapers down) to a preset value Ioct, the charger enters the MAINTENANCE mode.

For more chip details, see: UC3906N or Operation

Order the chip alone, or with Ra, Rb, Rc 1% and Rs resistors

Chip Alone, Order # UC3906N
1 to 3 - $ 7.50 each
4 to 10 - $ 7.00 each

For 1A Charger, Order # 150-CHP
Includes 100K, 20K, 392K 1% & 2 each 1/2 ohm
1 to 3 - $ 10.00 each
4 to 10 - $ 9.50 each

For 5A charger, Order # 155-CHP
Includes 97.6K, 20K, 392K 1% & 2 each 1/40 ohm
1 to 3 - $ 11.00 each
4 to 10 - $ 10.50 each

Assorted 5A parts available: (see list for details)

Shipping via mail to US 48 is
$3.50 for 1 - 3 chips/resistors
$4.50 for 4 - 10 chips/resistors

Shipping via mail to Alaska or Hawaii
$5.75 for 1 - 3 chips/resistors
$7.75 for 4 - 10 chips/resistors

California Residents add 8.00 % sales tax per order

Foreign orders please add $8.50 for 1 - 3 chips/resistors
$ 12.50 for 4 - 10 chips/resistors
Air Mail Shipping

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A & A Engineering 7970 Orchid Drive, Buena Park, CA 90620-1930

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