Lithium-Ion Charge Management Controllers

Microchip presents miniature single-cell fully integrated Li-Ion and Li-Polymer controllers

Image of Microchip's Lithium-Ion Charge Management Controllers Microchip's MCP73831 and MCP73832 charge management products are highly advanced linear charge management controllers for use in space limited, cost-sensitive applications. These devices come with an integrated pass transistor and integrated current sensing employing a constant current/constant voltage charge algorithm with selectable preconditioning and charge termination. The constant voltage regulation is fixed with four available options (4.20 V, 4.35 V, 4.40 V, or 4.50 V) to accommodate new, emerging battery charging requirements. The constant current value is set with one external resistor. The MCP73831/2 devices limit the charge current based on die temperature during high power or high ambient conditions. This thermal regulation optimizes the charge cycle time while maintaining device reliability. The MCP73831 and MCP73832 devices are available in an 8-lead, 2 mm x 3 mm DFN package or a 5-lead, SOT-23 package. Along with their small physical size, the low number of external components required make the MCP73831/2 ideally suited for portable applications. For applications charging from a USB port, the MCP73831/2 adhere to all the specifications governing the USB power bus.

Features
  • Linear charge management controller: integrated pass transistor, integrated current sense, reverse discharge protection
  • High accuracy preset voltage regulation: +0.75%
  • Four voltage regulation options: 4.20 V, 4.35 V, 4.40 V, and 4.50 V
  • Programmable charge current: 15 mA to 500 mA
  • Selectable preconditioning: 10%, 20%, 40%, or disable
  • Selectable end-of-charge control: 5%, 7.5%, 10%, or 20%
  • Charge status output: tri-state output (MCP73831), open-drain output (MCP73832)
  • Automatic power-down
  • Thermal regulation
  • Temperature range: -40°C to +85°C
  • Packaging: 8-lead, 2 mm x 3 mm DFN or 5-lead, SOT-23
Applications
  • Lithium-ion/Lithium-polymer battery chargers
  • Personal data assistants
  • Cellular telephones
  • Digital cameras
  • MP3 players
  • Bluetooth headsets
  • USB chargers

ICs

ImageManufacturer Part NumberDescriptionVoltage - Supply (Max)Available QuantityView Details
IC BATT CONTRL LI-ION 1CELL 8DFNMCP73831-2ACI/MCIC BATT CONTRL LI-ION 1CELL 8DFN6V0View Details
IC BATT CONTRL LI-ION 1CELL 8DFNMCP73831-2ATI/MCIC BATT CONTRL LI-ION 1CELL 8DFN6V0View Details
IC BATT CONTRL LI-ION 1CELL 8DFNMCP73831-2DCI/MCIC BATT CONTRL LI-ION 1CELL 8DFN6V0View Details
IC BATT CONTRL LI-ION 1CELL 8DFNMCP73831-3ACI/MCIC BATT CONTRL LI-ION 1CELL 8DFN6V751 - ImmediateView Details
IC BATT CONTRL LI-ION 1CELL 8DFNMCP73831-4ADI/MCIC BATT CONTRL LI-ION 1CELL 8DFN6V144 - ImmediateView Details
IC BATT CHG LI-ION 1CELL 8DFNMCP73831-5ACI/MCIC BATT CHG LI-ION 1CELL 8DFN6V827 - ImmediateView Details
IC BATT CONTRL LI-ION 1CELL 8DFNMCP73831T-2ACI/MCIC BATT CONTRL LI-ION 1CELL 8DFN6V0View Details
IC BATT CNTL LI-ION 1CEL SOT23-5MCP73831T-2ACI/OTIC BATT CNTL LI-ION 1CEL SOT23-56V24553 - ImmediateView Details
IC BATT CNTL LI-ION 1CEL SOT23-5MCP73831T-2ATI/OTIC BATT CNTL LI-ION 1CEL SOT23-56V0View Details
IC BATT CNTL LI-ION 1CEL SOT23-5MCP73831T-2DCI/OTIC BATT CNTL LI-ION 1CEL SOT23-56V0View Details

Development Tools

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
LI-ION LI-POLYMER CHARGER BOARD1904LI-ION LI-POLYMER CHARGER BOARD357 - ImmediateView Details
MICRO USB LIION/LIPOLY CHARGER1304MICRO USB LIION/LIPOLY CHARGER521 - ImmediateView Details
LIPO CHARGER BASIC - MINI-USBPRT-10401LIPO CHARGER BASIC - MINI-USB7 - ImmediateView Details
LIPO CHARGER BASIC - MICRO-USBPRT-10217LIPO CHARGER BASIC - MICRO-USB1007 - ImmediateView Details
SPARKFUN POWER CELL - LIPO CHARGPRT-11231SPARKFUN POWER CELL - LIPO CHARG0View Details
SPARKFUN USB LIPOLY CHARGER - SIPRT-12711SPARKFUN USB LIPOLY CHARGER - SI32 - ImmediateView Details
BOARD DEMO FOR MCP73831MCP73831EVBOARD DEMO FOR MCP738310View Details
REFERENCE DESIGN PWR-PTH MCP7383MCP7383XRD-PPMREFERENCE DESIGN PWR-PTH MCP73832 - ImmediateView Details
BOARD EVAL BATT CHARGER TC110TC110DMBOARD EVAL BATT CHARGER TC1100View Details
CHARGER CLICKMIKROE-2033CHARGER CLICK1 - ImmediateView Details
Published: 2017-07-10