MCHPMCP73831T-4ADI/OT
Overview
The MCP73831T-4ADI/OT is a highly advanced linear charge management controller designed for space-constrained applications. It integrates a pass transistor, current sense, and reverse discharge protection into a compact 5-lead SOT-23 package. This specific variant is factory-set to a 4.4V regulation voltage, making it suitable for specialized high-voltage lithium-ion or lithium-polymer battery chemistries.
Why Choose This Part
This controller offers high-accuracy voltage regulation with a typical tolerance of 0.75 percent. It simplifies design by eliminating the need for an external sense resistor or blocking diode, and it includes a status output pin for direct interfacing with microcontrollers or LEDs.
Applications
Key Specifications
Getting Started
To implement this part, connect the VDD pin to a 3.75V to 6V source and place a single resistor between the PROG pin and ground to set the charge current. Ensure adequate PCB copper area at the GND pin for thermal dissipation, as the linear regulator will drop the voltage difference between the input and battery as heat.
MCP7383 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Package | Fault Protection | Battery Pack Voltage | Charge Current - Max | Stock |
|---|---|---|---|---|---|
| MCP73831T-4ADI/OT (this part) | SC-74A, SOT-753 | Over Voltage | 4.4V | 500mA | 2,664 |
| MCP73831T-2ATI/OT | SC-74A, SOT-753 | Over Voltage | 4.2V | 500mA | 27,378 |
| MCP73831T-2ACI/OT | SC-74A, SOT-753 | Over Voltage | 4.2V | 500mA | 50,369 |
| MCP73833-AMI/UN | TFSOP-10 | Over Temperature | 4.2V | 1.1A | 3,385 |
| MCP73831-2ACI/MC | VFDFN-8 | Over Voltage | 4.2V | 500mA | 57,861 |
| MCP73831T-4ADI/MC | VFDFN-8 | Over Voltage | 4.4V | 500mA | 3,708 |
Also Consider
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