Philips TEA1104 Datasheet page 7

Philips Semiconductors
Cost effective battery monitor and fast
charge IC for NiCd and NiMH chargers
handbook, full pagewidth
(1) V < 0.81 V due to empty or flat battery.
bat
(2) For single LED application see Fig.7, for dual LED
application see Fig.6.
(3) V > 3.6 V due to system occurrence or an external
bat
inhibit via pin V .
bat
(4) Release via reset.
(5) T = V 2 V; Tmax = V
min NTC
T = V 0.81 V.
cut-off NTC
1996 Feb 26
no
V s 11.5 V 6.2 V
yes
total reset logic
clamp at 11.5 V
I DDmax = 25 mA set TIME OUT (e.g. 111 min)
set T max (e.g. 48
circuit active
T min (e.g. 20
circuit active
V bat
or T bat
or T bat
(note 1)
trickle charge
I fast / 40
dual LED
indication
(note 2)
FULL
OFF
0.81 V
T min
(note 5)
FAST charge
set T cut-off (e.g. 55
dual LED
indication
FULL
OFF
- V bat
t dis
1 V;
NTC
Fig.5 Flow chart of the TEA1104.
START
no
V s 11.5 V V s 5.25 V
yes
circuit non-active
I DD 45 A
o
C)
o
C)
0.81 V
no
T min
T max
yes
yes
FAST
no
blinks
yes
FAST
blinks
V bat 3.6 V
no
(note 3)
and
T bat T max
yes
o
C)
yes
FAST
no
ON
yes
FAST FULL
ON
0.25%
no
TIME OUT
and
3% TO
battery is FULL
FULL
7
TEA1104; TEA1104T
yes
stop charge
total reset
open battery
FAST
no
dual LED
indication
OFF
yes
FAST
OFF
OFF
no
111 min
(TO)
trickle charge
I fast / 40
(note 4)
yes
FAST
no
dual LED
indication
blinks
yes
FAST
OFF
ON
Objective specification
o no
T bat 55 C
(TCO)
MGE359