MCP73832T-2DCI/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
Microchip MCP73832T-2DCI/OT is a single-cell Li-Ion/Li-Polymer linear battery charger with programmable charge current up to 500 mA and preset 4.2 V charge termination voltage in a tiny 5-pin SOT-23 package. Features thermal shutdown at 150°C and charge status indicator output. From $0.45 in stock worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP73832T-2DCI/OT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5400(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Preset 4.2 V Li-Ion charge termination voltage with ±0.75% accuracy ensures safe full-charge cutoff without external voltage reference for single-cell battery applications
- Programmable charge current up to 500 mA via a single external resistor allows optimization for battery capacity from 100 mAh coin cells to 1000 mAh Li-Polymer packs
- Thermal shutdown protection at 150°C with automatic charge current reduction prevents overheating in compact wearable and IoT enclosures without heatsinking
Applications
The MCP73832T-2DCI/OT is ideal for USB-powered single-cell Li-Ion charging circuits in wearables, wireless earbuds, small IoT sensors, and handheld devices where board space is severely limited. Its 5-pin SOT-23 package occupies less than 5 mm² of PCB area, enabling charger integration even in miniaturized designs powered from a 5 V USB or adapter input. The adjustable charge current and built-in charge status output make it straightforward to implement complete battery management with minimal external components.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-5 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Additional Feature | Thermal Shutdown:150C |
| Adjustable Threshold | YES |
| Analog IC - Other Type | LINEAR BATTERY CHARGER |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 1.5mA |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 3.75V |
| Supply Voltage-Nom (Vsup) | 5.2V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +4.20V |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How is the charge current set on the MCP73832T-2DCI/OT and what resistor value programs 500 mA?
The MCP73832T-2DCI/OT programs charge current with a single external resistor (RPROG) connected between the PROG pin and ground. To set the maximum 500 mA charge current, a resistor value of approximately 2 kΩ is used, following the relationship ICHARGE = 1000 / RPROG(kΩ) mA. Larger resistor values reduce charge current proportionally, allowing optimization for battery capacities from 100 mAh to 1000 mAh.
What thermal protection does MCP73832T-2DCI/OT provide and how does it prevent damage in compact enclosures?
The MCP73832T-2DCI/OT incorporates a thermal shutdown circuit that activates at 150°C junction temperature, halting charge current to allow the device to cool. In compact wearable enclosures where airflow is restricted, the charger automatically reduces charge current as junction temperature rises toward 150°C, limiting power dissipation to safe levels without requiring a heatsink or external thermal management components.
For a 3.7 V 500 mAh Li-Polymer battery, how long does MCP73832T-2DCI/OT take to complete a full charge cycle?
At the maximum 500 mA programmable charge current, a 500 mAh Li-Polymer cell reaches approximately 80% state of charge in about 1 hour during the constant-current phase. The subsequent constant-voltage phase at 4.2 V adds another 30 to 60 minutes to complete the charge termination taper, resulting in a total charge time of approximately 1.5 to 2 hours from fully depleted to 100% for a 500 mAh single-cell pack.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.8300 | $0.83 |
| 100+ | $0.5600 | $56.00 |
| 1000+ | $0.5500 | $550.00 |
| 5000+ | $0.5400 | $2700.00 |
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