UC3906DWTR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Not For New Designs
Battery Chemistry:	Lead Acid
Number of Cells:	--
Current - Charging:	--
Programmable Features:	Current
Fault Protection:	--
Charge Current - Max:	--
Battery Pack Voltage:	--
Voltage - Supply (Max):	40V
Interface:	--
Operating Temperature:	0°C ~ 70°C (TA)
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	16-SOIC
Base Part Number:	UC3906

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UC3906DWTR Application Field and Working Principle

PMIC – Battery Chargers are designed to charge a wide variety of batteries from many different sources, including lead-acid, NiCad, NiMH, and lithium-ion. Every battery type has a different charging curve that must be properly implemented for the charger to work efficiently and safely. The UC3906DWTR is an advanced SwitchMode battery charger from Texas Instruments, designed for easy and reliable battery charging.The UC3906DWTR is a low-cost, high-efficiency, fixed frequency, MOSFET-based controller, optimized for battery-charging applications and is available in a small pack-age. Its key features include overvoltage, system and power good signaling, a logic-controlled power switch, high-side current sensing, and automatic charge termination. The chip includes the PWM current control and system protection functions needed to construct a cost-effective, high-efficiency battery charger. This device is perfect for a range of applications, including power converters, power protection, home appliances, automotive systems, computer peripherals, and battery chargers. It is especially useful for devices that require a low-power battery charger such as low-power MP3 players and portable CD players. The small package size, excellent efficiency, and high-speed response of the UC3906DWTR make it a great choice for these types of applications.The UC3906DWTR is a complete, easy-to-use solution for battery charging applications. It offers adjustable charging voltage, adjustable charge current limit, floating charge voltage regulation, and Automatic Recharge. Automatic Recharge is a feature that automatically restarts the charging cycle whenever battery voltage has dropped below the recharge voltage. This allows the charger to easily restore battery life without the need for user intervention.The chargers’ high switching frequency allows use of low-cost and small external components, while its low-ripple operating mode ensures long term battery life. The UC3906DWTR also offers protection against input overvoltage, open circuit protection, and reverse-polarity protection. The UC3906DWTR uses a simple two-wire connection to charge the battery, with a sense resistor connected to the battery system and a control loop providing power regulation based on the voltage measured. The device uses PWM control, with a frequency that is adjustable between 30kHz to 100kHz.The UC3906DWTR is an advanced charger solution for a wide range of battery types and provides excellent performance in terms of efficiency and operating safety. It allows for simple design and integration, and offers a range of features to make the charging process as efficient and safe as possible.

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