MCP73812T-420I/OT
Battery Chargers
Technical Specifications
| Type | Description |
|---|---|
| Working Voltage V | 4.875 V |
| Interface | - |
| Iq A | 5e-05 |
| End-Off Voltage | - |
| Number of Cells | 1 |
| Battery Temperature Detection | Not supported |
| 0V Battery Charge | Not supported |
| Type of Battery | Lithium Battery |
| Type | Description |
|---|---|
| The Chip Type | Charging IC |
| Balance Current | - |
| Charge Current - Max | 500mA |
| Charging Saturation Voltage | 4.2V |
| Operating Temp | -40°C ~ +85°C |
| Features | Constant current charging;Constant voltage charging;Programmable charging current;Reverse current blocking |
| Package / Case | SOT-23-5 |
Product Introduction
The MCP73811/2 devices are linear charge management controllers that are designed for use in space limited and cost sensitive applications. The MCP73811/2 provide specific charge algorithms for single cell Li-Ion or Li-Polymer battery to achieve optimal capacity in the shortest charging time possible. Along with its small physical size, the low number of external components required make the MCP73811/2 ideally suited for portable applications. For applications charging from a USB port, the MCP73811 adheres to all the specifications governing the USB power bus.
The MCP73811/2 employ a constant current/constant voltage charge algorithm. The constant voltage regulation is fixed at 4.20V, with a tight regulation tolerance of 1%. For the MCP73811, the constant current value is selected as 85 mA (low power USB port) or 450 mA (high power USB port) with a digital input signal on the PROG input. For the MCP73812, the constant current value is set with one external resistor. The MCP73811/2 limit the charge current based on die temperature during high power or high ambient conditions. This thermal regulation optimizes the charge cycle time while maintaining device reliability.
The MCP73811/2 are fully specified over the ambient temperature range of -40°C to +85°C. The MCP73811/2 are available in a 5-Lead, SOT-23 package.
Features
- Complete Linear Charge Management Controller
- Integrated Pass Transistor - Integrated Current Sense - Integrated Reverse Discharge Protection
- Constant Current / Constant Voltage Operation with Thermal Regulation
- High Accuracy Preset Voltage Regulation: + 1%
- Voltage Regulation: 4.20V
- Selectable Charge Current: MCP73811: 85 mA / 450 mA
- Programmable Charge Current: MCP73812: 50 mA - 500 mA
- Minimum External Components Required: MCP73811: 2 Ceramic Capacitors - MCP73812: 2 Ceramic Capacitors and 1 Resistor
- No Preconditioning
- External End-of-Charge Control
- Automatic Power-Down when Input Power Removed
- Active High Charge Enable
- Temperature Range: -40°C to +85°C
- Packaging: 5-Lead SOT-23
Applications
- - Low-Cost Lithium-Ion/Lithium-Polymer Battery Chargers - Rechargeable Toys - Electronic Cigarettes - Bluetooth Headsets - USB Chargers
Datasheet
Alternative Parts
Common MCP73812T-420I/OT alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Sourcing Information
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