TEA1104T Selling Leads, Price trend, TEA1104T DataSheet download, circuit diagram from SeekIC.com

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 possibiliti...

Product Details

Description

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 inputvoltage range
· Few low cost external components required.

Application

· Portable telephone
· Portable computer
· Portable audio
· Portable video.

Pinout

Connection Diagram

Specifications

SYMBOL	PARAMETER	CONDITIONS	MIN.	MAX.	UNIT
V_P	positive supply voltage		-0.5	+13.2	V
V_oLED	output voltage at pin 5		-0.5	V_P	V
V_iNTC	negative temperature coefficient resistor input voltage (pin 2)		-0.5	+5	V
V_i(OSC)	oscillator input voltage (pin 7)		-0.5	+5	V
V_i(bat)	battery input voltage (pin 4)		-3	+5	mA
V_Rref	reference resistor voltage (pin 5)		-0.5	+5	V
I_source	output source current		-3	+0.01	mA
I_oLED	LED output current		-	25	mA
I_Rref	reference resistor current		-1	+0.01	mA
I_bat	battery current		-1	+1	mA
V_P	supply current		-	25	mA
P_tot	total power dissipation	Tamb = 70 °C TEA1104 TEA1104T	- -	0.5 0.35	W W
T_amb	operating ambient temperature		-20	+70	°C
T_{j (max)}	maximum operating junction temperature		-	+150	°C
T_stg	storage temperature		-55	+150	°C

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.

TEA1104T

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