MCP73837T-FCI/UN Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP73837T-FCI/UN is a highly integrated linear Li-Ion and Li-Polymer battery charger IC from Microchip, featuring automatic USB/DC input power-source selection, up to 1 A charge current, and thermal regulation in a compact MSOP-10 package. It is RoHS compliant and supports adjustable charge thresholds suitable for single-cell battery applications.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- MCP73837T-FCI/UN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7058(MOQ 25)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Automatic USB/DC input power-source selection with priority given to DC adapter
- Up to 1 A programmable charge current via single resistor
- Integrated thermal regulation prevents overheating during charge cycle
- Charge status output pins for LED or host-controller indication
- Available in compact MSOP-10 package for space-constrained designs
- Compatible with Li-Ion and Li-Polymer single-cell batteries
Applications
The MCP73837T-FCI/UN is widely used in portable consumer electronics such as smartphones, Bluetooth headsets, and handheld GPS devices that require automatic switching between USB and wall-adapter charging sources. It is also adopted in industrial handhelds and medical wearables where compact size, single-cell Li-Ion charging, and thermal protection are critical design requirements.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-10 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Adjustable Threshold | YES |
| Analog IC - Other Type | LINEAR BATTERY CHARGER |
| JESD-30 Code | S-PDSO-G10 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP10,.19,20 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 3mA |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5.2V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +4.2V |
| Package | Small Outline Packages |
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 much charge current can the MCP73837T-FCI/UN deliver, and how is it set?
The MCP73837T-FCI/UN supports a programmable charge current of up to 1 A, set via a single external resistor connected to the PROG pin. This makes it straightforward to tailor charge rate to the battery capacity in the target design.
How does the MCP73837T-FCI/UN handle simultaneous USB and DC adapter connections?
The IC features automatic input power-source selection, giving priority to the DC adapter input over the USB 500 mA bus. When both sources are present, the charger draws from the higher-priority DC rail, preventing USB port overload while still charging a single-cell Li-Ion battery.
What thermal protection does the MCP73837T-FCI/UN offer during extended charging?
The device integrates a thermal regulation loop that reduces charge current when the junction temperature approaches approximately 120 °C, preventing thermal runaway without requiring an external temperature sensor. This is especially valuable in compact enclosures where airflow is limited.
Is the MCP73837T-FCI/UN RoHS compliant and what package is it supplied in?
Yes, the MCP73837T-FCI/UN carries a JESD-609 e3 lead-free code, confirming RoHS compliance and Pb-free construction. It is supplied in a 10-pin MSOP-10 package, which measures roughly 3 mm × 3 mm, making it suitable for PCB layouts with tight space budgets.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $1.2600 | $31.50 |
| 100+ | $1.1400 | $114.00 |
| 250+ | $0.7060 | $176.50 |
| 500+ | $0.7059 | $352.95 |
| 3000+ | $0.7058 | $2117.40 |
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