MCP73833-CNI/MF Microchip Integrated Circuit (Small Outline No-lead) In Stock
Linear battery charge controller for single-cell Li-Ion and Li-Polymer batteries with programmable charge current and preconditioning. Integrates charge status outputs, thermal regulation, and automatic recharge detection in a compact 10-pin DFN package. Available from Microchip in RoHS-compliant packaging with worldwide stocking.
- Manufacturer
- Microchip
- Package
- Small Outline No-lead
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- MCP73833-CNI/MF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6870(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Single-cell Li-Ion and Li-Polymer linear charger with programmable charge current set by external resistor, supporting designs from 100 mA up to 1 A
- Integrated thermal regulation reduces charge current when die temperature exceeds safe limit, protecting the IC and battery without external components
- Automatic recharge detection restarts the charge cycle when battery voltage drops 100 mV below regulation threshold, keeping batteries topped off
- 10-pin DFN (3 mm × 3 mm) package with exposed thermal pad achieves compact footprint while dissipating linear charger heat efficiently
Applications
MCP73833-CNI/MF suits single-cell Li-Ion charging in portable consumer electronics such as wireless earbuds, smartwatches, Bluetooth trackers, and handheld medical devices. The programmable charge current and thermal fold-back simplify compliance with USB 5 V bus current limits while protecting both the IC and the battery in compact enclosures. Its automatic recharge capability keeps batteries at full capacity in intermittently connected IoT nodes without requiring firmware intervention.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | DFN-10 |
| Factory Lead Time | 7Weeks |
| YTEOL | 9 |
| Analog IC - Other Type | LINEAR BATTERY CHARGER |
| Qualification Status | Not Qualified |
| ## MCP73833-CNI/MF Alternates Showing results | Image |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP73833-CNI/MF:
suggested
suggested
suggested
suggested
1A ADVANCED SINGLE CELL, FULLY INTEGRATED LI-ION POLYMER CHANGE MANAGEMENT CONTR
1A ADVANCED SINGLE CELL, FULLY INTEGRATED LI-ION POLYMER CHANGE MANAGEMENT CONTR
1A SINGLE CELL CHARGER WITH USB PORT & AC ADAPTER SUPPLY MANAGEMENT
Frequently Asked Questions
How is the charge current of MCP73833-CNI/MF set, and what range can it cover for different battery sizes?
The charge current of MCP73833-CNI/MF is set by a single external resistor connected to the PROG pin. A 10 kΩ resistor corresponds to approximately 100 mA, and reducing the resistor value increases current proportionally up to 1 A. This allows the same IC to charge small 50 mAh coin cells and larger 1 Ah pouch cells by simply changing one passive component in the design.
In a USB-powered wearable, how does MCP73833-CNI/MF's thermal regulation prevent damage during charging in a sealed enclosure?
MCP73833-CNI/MF monitors its own die temperature and automatically reduces charge current when the junction approaches the thermal regulation threshold, typically around 115 °C. In sealed wearable enclosures with limited airflow, this prevents the IC from sustaining damage or triggering a thermal-protection shutdown, ensuring continuous charging at the highest safe current without requiring the host firmware to manage thermal throttling.
What does the automatic recharge function of MCP73833-CNI/MF do, and why is it useful in always-on IoT applications?
When the battery self-discharges below a threshold that is 100 mV under the final charge voltage (e.g., below 4.1 V for a 4.2 V cell), MCP73833-CNI/MF automatically re-initiates a full charge cycle. This keeps the battery near full capacity in always-on IoT sensors and asset trackers connected to a 5 V USB power source, without requiring the microcontroller to wake and command a new charge cycle via software.
How does the 10-pin DFN package of MCP73833-CNI/MF compare to SOIC alternatives for thermal management in compact charger circuits?
The MCP73833-CNI/MF DFN-10 package measures 3 mm × 3 mm and includes an exposed thermal pad that reduces thermal resistance to the PCB by roughly 40–50% compared to a standard SOIC-8 package of similar size. For a linear charger dissipating up to 1.5 W at 300 mA charging from a 5 V input into a 3.7 V cell, the thermal pad ensures the junction stays well within the 150 °C absolute maximum even at 85 °C ambient.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.1400 | $1.14 |
| 100+ | $0.8800 | $88.00 |
| 1000+ | $0.8600 | $860.00 |
| 1080+ | $0.8500 | $918.00 |
| 5000+ | $0.8300 | $4150.00 |
| 5040+ | $0.6870 | $3462.48 |
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