TEA1103T

Product Summary

The TEA1103T is a fast charge IC which is able to fast charge NiCd and NiMH batteries.Several LEDs, as well as a buzzer, can be connected to the TEA1103T for indicating battery insertion, charge states, battery full condition and protection mode. The TEA1103T is contained in a 20-pin package and is 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 TEA1103T is pin compatible with the TEA1102x, fast charge ICs for LiIon, SLA, NiCd and NiMH batteries.

Parametrics

TEA1103T absolute maximum ratings: (1)VP, positive supply voltage: -0.5 to +11.5 V; (2)VoLED, output voltage at pin 5: -0.5 to +15 V; (3)Vn, voltage at pins PWM, LS and NTC: -0.5 to +VS V; (4)VIB, voltage at pin 2: -0.5 to +1.0 V; (5)IVS, current at pin 16: -3 to +0.01 mA; (6)IVsl, current at pin 13: -1 to +0.3 mA; (7)IoLED, output current at pin 5: 2 mA; (8)IAO, output current at pin 18: -10 to +0.05 mA; (9)Ptot, total power dissipation Tamb = 85℃: SOT146-1: 1.2 W; SOT163-1: 0.6 W; SOT339-1: 0.45 W; (10)Tamb operating ambient temperature: -20 to +85℃; (11)Tj, junction temperature: 150℃; (12)Tstg, storage temperature: -55 to +150℃.

Features

TEA1103T features: (1)Safe and fast charging of Nickel Cadmium (NiCd) and Nickel Metal Hydride (NiMH) batteries; (2)Pin compatible with the TEA1102x, fast charge ICs for LiIon, SLA, NiCd and NiMH batteries; (3)Three charge states for NiCd or NiMH; fast, top-off and trickle or voltage regulation (optional); (4)Adjustable fast charge current [0.5CA to 5CA nominal (CA = Capacity Amperes); (5)DC top-off and pulsating trickle charge current (NiCdand NiMH); (6)Temperature dependent DT/Dt battery full detection; (7)A utomatic switch-over to accurate peak voltage detection (-1¤4%) if no NTC is applied; (8)Possibility to use both DT/Dt and peak voltage detection as main fast charge termination; (9)Support of inhibit during all charging states; (10)Manual refresh with regulated adjustable discharge current (NiCd and NiMH); (11)Voltage regulation in the event of no battery; (12)Support of battery voltage based charge indication and buzzer signalling at battery insertion, end of refresh and at full detection; (13)Single, dual and separate LED outputs for indication of charge status state; (14)Minimum and maximum temperature protection; (15)Time-out protection; (16)Short-circuit battery voltage protection; (17)Can be applied with few low-cost external components.

Diagrams