USB compatible battery charger demo board with integrated power switch for Li-Ion/Li-Polymer based on the L6924U

The STEVAL-ISA076V2 demonstration board is based on the L6924U which is a fully monolithic battery charger dedicated to single-cell Li-Ion/Polymer battery packs. It is the ideal solution for space-limited applications, such as PDAs, handheld equipment, cellular phones, and digital cameras.

When an external voltage regulated adapter or USB port is used, the L6924U works in linear mode, and charges the battery in a constant current/constant voltage (CC/CV) profile.

Moreover, when a current-limited adapter is used, the device can operate in Quasi-Pulse Mode, dramatically reducing the power dissipation.

Key Features

  • Operating input voltage up to 12 V
  • Fully integrated solution with power MOSFET, reverse blocking diode, sense resistor, and thermal control
  • AC adapter or USB mode selection
  • Programmable charge current for both AC adapter and USB power sources separately
  • Low power/high power selection in USB mode
  • Both linear and quasi-pulse operation
  • 4.2 V preset charge voltage (±1 % accuracy)
  • Programmable termination current
  • Programmable charge timer
  • Status outputs to drive LEDs or host processor interface
  • Battery absence detection
  • Closed loop thermal control
  • NTC or PTC thermistor interface for battery temperature monitoring and protection
  • RoHS compliant

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设计

技术文档

产品规格
Description Version Size
DB1157 DB1157: USB compatible battery charger demo board with integrated power switch for Li-Ion/Li-Polymer based on the L6924U 1.1 97 KB

硬件资源

Board Manufacturing Specifications
Description Version Size
Gerber files for STEVAL-ISA076V2 board 1.0 279 KB
Bill of Materials
Description Version Size
BOM for STEVAL-ISA076V2 board 1.0 50 KB
Schematic Packs
Description Version Size
Board Schematics for STEVAL-ISA076V2 board 1.0 21 KB

法律

许可协议
Description Version Size
Evaluation products license agreement 1.0 125 KB
支持和社区

样片和购买

型号 Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STEVAL-ISA076V2 L6924U Active 42.88 1 NEC EAR99 ITALY MORE INFO 直接购买 Add to cart DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

质量和可靠性

型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEVAL-ISA076V2 ActiveCARDIndustrialEcopack2
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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