Characteristics – Philips TEA1104T User Manual
Page 9
1996 Feb 26
9
Philips Semiconductors
Objective specification
Cost effective battery monitor and fast
charge IC for NiCd and NiMH chargers
TEA1104; TEA1104T
CHARACTERISTICS
V
P
= 10 V; T
amb
= 25
°
C; R
ref
= 33 k
Ω
; C
OSC
= 1 nF; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply
V
P
supply voltage
5.45
−
11.5
V
∆
V
P
/
∆
t
supply voltage start rate
−
−
0.5
V/
µ
s
V
clamp
clamping voltage
I
clamp
= 25 mA
11.5
−
12.8
V
V
start
start-up voltage
6.1
6.4
6.7
V
V
pd
power-down voltage level
4.65
5.05
5.45
V
I
P
supply current
outputs off
−
−
3
mA
I
start
start-up current
V
P
= 4 V
−
45
50
µ
A
V
S
stabilized voltage
I
S
= 1 mA
4.03
4.25
4.46
V
V
Rref
voltage range at reference resistor
I
Rref
= 20
µ
A
1.18
1.25
1.31
V
TC
Vref
temperature coefficient of the
reference voltage
T
amb
= 0 to 45
°
C
−
±
60
±
120
ppm/K
I
Rref
current range of the reference
resistor
10
−
100
µ
A
Temperature related input; NTC
V
i(co)
input voltage level for detecting
temperature cut-off
0.75
0.81
0.87
V
V
i(co; max)
maximum input voltage level for
detecting temperature cut-off
0.92
1.0
1.08
V
V
i(co; min)
minimum input voltage level for
detecting temperature cut-off
1.85
2.0
2.15
V
I
NTC
input current
V
NTC
= 1.5 V
−
5
−
+5
µ
A
Output drivers
δ
LED
LED pulse duty factor
2.4
2.5
2.6
%
V
LED(sat)
LED saturation voltage
I
LED(sat)
= 15 mA
−
−
600
mV
I
LI(LED)
LED input leakage current
V
LED
= 15 V
−
−
5
µ
A
Battery monitor
I
i(bat)
input battery current
V
bat
= 2.4 V
−
1
−
nA
V
bat
voltage range for peak detection
0.81
−
3.6
V
∆
V
bat
/V
bat
peak detection level with respect to
top level
V
bat
= 2 V
−
0.25
−
%
T
j
temperature range of peak
detection
0
−
50
°
C
Protections; BAT
V
bat(l)
low level battery protection voltage
−
0.81
0.91
V
V
bat(h)
high level battery protection voltage
3.5
3.6
4.5
V
Oscillator
k
correction factor
0.84
0.93
1.02
f
osc
frequency range
10
−
100
kHz