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Information as of 2000-01-10
 Latest information online
TEA1103; TEA1103T; TEA1103TS; Fast charge ICs for NiCd and NiMH batteries
| Description |  |
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The TEA1103x are fast charge ICs which are able to fast charge NiCd and NiMH batteries. The main fast charge termination for NiCd and NiMH batteries are DT/Dt and peak voltage detection, both of which are well proven techniques. The TEA1103x automatically switches over from DT/Dt to peak voltage detection if the thermistor fails or is not present. The DT/Dt detection sensitivity is temperature dependent, thus avoiding false charge termination. Three charge states can be distinguished; fast, top-off and trickle. Several LEDs, as well as a buzzer, can be connected to the TEA1103x for indicating battery insertion, charge states, battery full condition and protection mode. The TEA1103x are contained in a 20-pin package and are manufactured in a BiCMOS process, essentially for integrating the complex mix of requirements in a single chip solution. Only a few external low cost components are required in order to build a state of the art charger. The TEA1103x are pin compatible with the TEA1102x, fast charge ICs for LiIon, SLA, NiCd and NiMH batteries.
| Features | |
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- Safe and fast charging of Nickel Cadmium (NiCd) and Nickel Metal Hydride (NiMH) batteries
- Pin compatible with the TEA1102x, fast charge ICs for LiIon, SLA, NiCd and NiMH batteries
- Three charge states for NiCd or NiMH; fast, top-off and trickle or voltage regulation (optional)
- Adjustable fast charge current [0.5CA to 5CA nominal (CA = Capacity Amperes)]
- DC top-off and pulsating trickle charge current (NiCd and NiMH)
- Temperature dependent DT/Dt battery full detection
- Automatic switch-over to accurate peak voltage detection (- 1/4 %) if no NTC is applied
- Possibility to use both DT/Dt and peak voltage detection as main fast charge termination
- Support of inhibit during all charging states
- Manual refresh with regulated adjustable discharge current (NiCd and NiMH)
- Voltage regulation in the event of no battery
- Support of battery voltage based charge indication and buzzer signalling at battery insertion, end of refresh and at full detection
- Single, dual and separate LED outputs for indication of charge status state
- Minimum and maximum temperature protection
- Time-out protection
- Short-circuit battery voltage protection
- Can be applied with few low-cost external components.
| Datasheet | |
| Products, packages, availability and ordering | |
Please note, devices listed in the "Products, packages, availability and ordering" table marked with "WIT" are discontinued. Devices marked with "DOD" will be in the near future.
Contact your nearest sales or distributor office for the latest information on product status and availability.
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TEA1103; TEA1103T; TEA1103TS links to the similar products page containing an overview of products that are similar in function or related to the part number(s) as listed on this page. The similar products page includes products from the same catalog tree(s) , relevant selection guides and products from the same functional category.
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