To introduce basic knowledge of battery chargers and Microchip’s product portfolio

6. Battery Chemistries Primary Batteries Secondary Batteries Zinc Air NiCd Zinc Carbon NiMH Mercury Li-Ion Lithium Lead Acid Alkaline Rechargeable Alkaline

9. Charge Voltage and Accuracy

11. Battery Charger Offering MCP73123 OVP MCP73842/4 12V input MCP73862/4 1A, 12 V input MCP73213 OVP MCP73861/3 1A, 12 V input MCP73833/4 1A, 10-MSOP MCP73837/8 USB & AC-adapter MCP73871 Load Sharing MCP73113/4 5.8/6.5V OVP MCP73853/5 0.5A, USB MCP73831/2 0.5A, SOT-23 MCP73811/2 0.5A, SOT23,USB MCP73223 OVP Linear Li-Ion/Li-Polymer Battery Chargers 1-cell 2-cell 500 mA 1A Int. FET MCP73826/7/8 Basic features MCP73841/3 Mult. features 12 V input Ext. FET Int. FET Ext. FET 1-cell Int. FET 2-cell LiFePO 4 Battery Chargers Int. FET

12. Battery Charger Portfolio – Single-cell * See MCP7383X Li-Ion System Power Path Management Reference Design ** LiFePO4 battery chemistry Vcc Range (V) Vreg (V) FET Icharge Load sharing Dual Input Temp Mon. OVP MCP73841/3 4.5-12 4.1, 4.2 External - - - Yes - MCP73831/2 3.75-6 4.20, 4.35, 4.40, 4.50 Internal 500 mA ext* - - - MCP73833/4 3.75-6 4.20, 4.35, 4.40, 4.50 Internal 1A ext* - Yes - MCP73837/8 3.75-6 4.20, 4.35, 4.40, 4.50 Internal 1A ext* Yes Yes - MCP73871 4.4-6 4.10, 4.20, 4.35, 4.40 Internal 1A Yes Yes Yes - MCP73113/4 4-16 4.10, 4.20, 4.35, 4.40 Internal 1.1A - - - 6.5V/5.8V MCP73123** 4-16 3.6 Internal 1.1A - - - 6.5V MCP73861/3 4.5-12 4.1, 4.2 Internal 1.2A - - Yes -

13. Battery Charger Portfolio – Dual-cell * LiFePO4 battery chemistry Vcc Range (V) Vreg (V) FET Icharge Temp Monitor OVP MCP73842/4 4.5-12 8.2, 8.4 External - Yes - MCP73213 4-16 8.2, 8.4, 8.7, 8.8 Internal 1.1A - 13V MCP73223* 4-16 7.2 Internal 1.1A - 13V MCP73862/4 4.5-12 8.2, 8.4 Internal 1.2A Yes -