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TEA1104T

NXP
Part Number TEA1104T
Manufacturer NXP
Description Cost effective battery monitor and fast charger
Published Apr 16, 2005
Detailed Description INTEGRATED CIRCUITS DATA SHEET TEA1104; TEA1104T Cost effective battery monitor and fast charge IC for NiCd and NiMH c...
Datasheet PDF File TEA1104T PDF File

TEA1104T
TEA1104T

Overview
INTEGRATED CIRCUITS DATA SHEET TEA1104; TEA1104T Cost effective battery monitor and fast charge IC for NiCd and NiMH chargers Objective specification File under Integrated Circuits, IC03 1996 Feb 26 Philips Semiconductors Objective specification Cost effective battery monitor and fast charge IC for NiCd and NiMH chargers FEATURES • Accurate detection of fully charged batteries by currentless peak voltage sensing • Switch-over from fast to safe trickle charge current at battery full detection • Fast charge termination back-up by maximum time and maximum temperature detection • Several trickle charge drive possibilities for mains isolated and non-mains isolated systems • Battery checking to protect against short-circuited and open batteries • Battery monitor allows recharging of different battery packs in the same charger • Dual LED indicator provision • External regulator not required because of large input voltage range • Few low cost external components required.
APPLICATIONS • Portable telephone • Portable computer • Portable audio • Portable video.
TEA1104; TEA1104T GENERAL DESCRIPTION The TEA1104 is manufactured in a BiCMOS process intended to be used as a battery monitor circuit in charge systems for NiCd and NiMH batteries.
It is especially designed for cost effective compact consumer applications.
The circuit is able to detect fully charged batteries by currentless battery voltage sensing.
Several output drive functions are available to control the (reduced) trickle charge current to keep the batteries full with maximum life expectations.
The battery full detection is backed up by two independent mechanisms to make the system fail safe; maximum time and maximum temperature.
QUICK REFERENCE DATA SYMBOL VP IP Vbat ∆Vbat/Vbat Ibat Vbat(l) Vbat(h) fosc PARAMETER supply voltage supply current voltage range of battery full detection voltage peak detection level with respect to top value battery monitor input current battery voltage protection low battery volt...


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