Product Summary
The MC34673AEPR2 is a cost-effective fully-integrated battery charger for Li-Ion or Li-Polymer batteries. The high input voltage, up to 28V, eliminates the input over-voltage protection circuit required in handheld devices such as PDAs, cell phones, portable video game players and digital still cameras. The MC34673AEPR2 includes trickle, constant-current (CC) and constant-voltage (CV) charge modes. The CC-mode current is programmable up to 1.2A with an external resistor. The voltage across the external resistor is also used to monitor the actual charge current. The constant voltage is fixed at 4.2V with 0.7% accuracy over a -20°to 70°C temperature range. The trickle-mode current is preset to 20% of the CC-mode current when the battery voltage is lower than the trickle-mode threshold.
Parametrics
MC34673AEPR2 absolute maximum ratings: (1)intput voltage range: -0.3 to 28V; (2)ESD voltage: 2000V; (3)operating temperature, ambient: -40 to 85℃; (4)operating temperature, junction: -40 to 150℃; (5)storage temperature: -65 to 150℃; (6)thermal resistance: 10℃/W.
Features
MC34673AEPR2 features: (1)±0.7% voltage accuracy over -20°C to 70°C; (2)±6% current accuracy over -40°C to 85°C; (3)28V maximum voltage for the power input with 6.8V over-voltage protection threshold; (4)2.6V minimum input operating voltage; (5)Trickle charge for fully discharged batteries; (6)Charge current monitor; (7)Charge current thermal foldback; (8)Pb-free packaging designated by suffix code EP.
Diagrams
Image | Part No | Mfg | Description | Pricing (USD) |
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MC34673AEPR2 |
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