Part # Brief EVAL6924 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: VAL6924D Battery charger system with integrated Power Switch for Li-ION Li-POLYMER


Part Details:

EVAL6924D EVAL6924D Battery charger system with integrated Power Switch for Li-ION/Li-POLYMER Data Brief General description many parameters, such as pre-charge current, fast-charge current, pre-charge voltage threshold, The L6924D is a fully monolithic battery charger end-of-charge current threshold, and charge dedicated to single-cell Li-Ion/Polymer battery timer. packs. It is the ideal solution for space-limited The L6924D offers two open collector outputs for applications, like PDAs, handheld equipment, diagnostic purposes, which can be used to either cellular phones, and digital cameras. It is drive two external LEDs or communicate with a designed with BCD6 technology and integrates all host microcontroller. Finally, the L6924D also of the power elements (the Power MOSFET, provides very flexible control of the charge reverse blocking diode and the sense resistor) in process termination and Gas Gauge capability, as a small VFQFPN16 3mm x 3mm package. well as other functions, such as checking for When an external voltage regulated wall adapter battery presence, and monitoring and protecting is used, the L6924D works in Linear Mode, and the battery from unsafe thermal conditions. charges the battery in a Constant The EVAL6924D Evaluation Board integrates the Current/Constant Voltage (CC/CV) profile. linear battery charger as well as the external Moreover, when a current-limited adapter is used, components required for a typical application. the device can operate in Quasi-Pulse Mode, dramatically reducing the power dissipation. The input voltage range can be adjusted between Regardless of the charging approach, a closed 2.5V and 12V, while the output voltage is selected loop thermal control avoids device overheating. by J4, between 4.1V and 4.2V, depending on the battery type. The fast charge current is set to 500 The device has an operating input voltage ranging mA through the 24K R5 resistor. from 2.5V to 12V and it allows the user to program Evaluation board November 2006 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 4 Features EVAL6924D 1 Features Figure 1.


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Brief EVAL6924.pdf Datasheet