MCP73831 Pin Descriptions

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Below is a table summarizing the MCP73831/2 pin functions and key input/output characteristics based on the provided datasheet:

Table

Pin NameSchematic SymbolFunction DescriptionInput/Output Characteristics & Notes
VDDVDDBattery Management Input SupplyInput supply for the device. Powers the chip with a recommended voltage range of [VREG(typical)+1V] to 6V. The MCP73831/2 enters power-down mode if VDD falls below the UVLO threshold, thus protecting the battery from being drained.
STATSTATCharge Status OutputOutputs the charging status. On the MCP73831 it is a tri-state digital output, while on the MCP73832 it is an open-drain output. It is typically used to drive an LED or interfaced to a microcontroller via a pull-up resistor.
PROGPROGCurrent Regulation Set and Charge Control EnableUsed to set the charge current and control the charge cycle. Connecting a resistor from PROG to Vss enables charging; leaving it floating or driving it high disables the device, reducing its supply current to approximately 25 µA.
VBATVBATBattery Charge Control OutputProvides battery detection by sourcing roughly 6 µA. If the voltage at VBAT rises above VREG + 100 mV, the device assumes the battery is not present; if it stays below that threshold, a battery connection is inferred. Note that the VBAT function may be available on more than one pin (depending on the package) to perform battery detection.
VssVssGround Reference / Battery Management OV ReferenceServes as the ground reference for the device and is used for bypassing and establishing loop stability (with a recommended bypass capacitor of at least 4.7 µF on VDD).
This summary provides an overview of the pin functionalities, their purposes, and key operating considerations as outlined in the datasheet.
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  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
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  • Generic Capacitor
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