TEA1102.PDF

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INTEGRATED CIRCUITS
DATA SHEET
TEA1102; TEA1102T;
TEA1102TS
Fast charge ICs for NiCd, NiMH,
SLA and LiIon
Preliminary specification
Supersedes data of 1997 Oct 09
File under Integrated Circuits, IC03
1999 Jan 27
11018298.042.png
Philips Semiconductors
Preliminary specification
Fast charge ICs for NiCd, NiMH, SLA and
LiIon
TEA1102; TEA1102T;
TEA1102TS
FEATURES
GENERAL DESCRIPTION
·
Safe and fast charging of Nickel Cadmium (NiCd),
Nickel Metal Hydride (NiMH), Lithium Ion (LiIon), and
Sealed Lead Acid (SLA) batteries
The TEA1102x are fast charge ICs which are able fast
charge NiCd and NiMH, SLA and Lilon batteries.
The main fast charge termination for NiCd and NiMH
batteries are
·
Three charge states for NiCd or NiMH; fast, top-off and
trickle or voltage regulation (optional)
t and peak voltage detection, both of
which are well proven techniques. The TEA1102x
automatically switches over from D T/ D t to peak voltage
detection if the thermistor fails or is not present. The
D
T/
D
·
Two charge states for LiIon or SLA; current and voltage
limited
D
T/
D
t
detection sensitivity is temperature dependent, thus
avoiding false charge termination. Three charge states
can be distinguished; fast, top-off and trickle.
·
Adjustable fast charge current [0.5CA to 5CA nominal
(CA = Capacity Amperes)]
·
DC top-off and pulsating trickle charge current (NiCd
and NiMH)
Charging Lilon and SLA batteries is completely different.
When the batteries reach their maximum voltage
(adjustable), the TEA1102x switches over from current
regulation to voltage regulation. After a defined time
period, which is dependent on battery capacity and charge
current, charge is terminated. Due to small self discharge
rates of Lilon and SLA batteries, trickle charge can be
omitted.
·
Temperature dependent
T/
D
t battery full detection
·
Automatic switch-over to accurate peak voltage
detection (
-
1
¤ 4 %) if no NTC is applied
·
Possibility to use both D T/ D t and peak voltage detection
as main fast charge termination
·
Support of inhibit during all charging states
·
Manual refresh with regulated adjustable discharge
current (NiCd and NiMH)
Several LEDs, as well as a buzzer, can be connected to
the TEA1102x for indicating battery insertion, charge
states, battery full condition and protection mode.
·
Voltage regulation in the event of no battery
·
Support of battery voltage based charge indication and
buzzer signalling at battery insertion, end of refresh and
at full detection
The TEA1102x are contained in a 20-pin package and are
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.
·
Single, dual and separate LED outputs for indication of
charge status state
·
Minimum and maximum temperature protection
·
Time-out protection
·
Short-circuit battery voltage protection
·
Can be applied with few low-cost external components.
ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TEA1102
DIP20
plastic dual in-line package; 20 leads (300 mil)
SOT 146-1
TEA1102T
SO20
plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
TEA1102TS
SSOP20
plastic shrink small outline package; 20 leads; body width 5.3 mm
SOT339-1
1999 Jan 27
2
D
11018298.043.png
Philips Semiconductors
Preliminary specification
Fast charge ICs for NiCd, NiMH, SLA and
LiIon
TEA1102; TEA1102T;
TEA1102TS
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V P
supply voltage
5.5
-
11.5
V
I P
supply current
outputs off
-
4
-
mA
D V NTC /V NTC temperature rate dependent
( D T/ D t) detection level
V NTC =2V;
T j = 0 to 50 ° C
-
- 0.25
-
%
D
V bat /V bat
voltage peak detection level with
respect to top value
V bat =2V;
T j = 0 to 50
-
-
0.25
-
%
°
C
I Vbat
input current battery monitor
V bat = 0.3 to 1.9 V
-
1
-
nA
V bat(l)
voltage at pin 19 for detecting low
battery voltage
-
0.30
-
V
I IB
battery charge current
fast charge
10
-
100
m
A
top-off mode
-
3
-
m
A
I IB(max)
maximum battery charge current voltage regulation full
NiCd and NiMH battery
-
10
-
m A
I IB(Lmax)
maximum load current
no battery
-
40
-
m
A
f osc
oscillator frequency
10
-
200
kHz
V reg
regulating voltage
LiIon
-
1.37
-
V
SLA
-
1.63
-
V
NiCd and NiMH
(pin V stb open-circuit)
-
1.325 or
V stb
-
V
open battery
-
1.9
-
V
1999 Jan 27
3
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V bat
V stb
R ref
OSC
19
1
20
14
PROTECTION
fast
charge
1.25/R ref
top
off
3
A
standby
current
10
m
A
load
current
40
LS
OSC
PWM
SET
CHARGE CONTROL
AND
OUTPUT DRIVERS
NTC
present
A2
R
Q
15
3.3 V
PWM
battery
low
S
V bat
V reg
0.3 V
17
LS
T min
2.8 V
4.25 V
156
k
end
refresh
18
A1
A3
AO
1 V
4
´
W
T max
1 V
9
MTV
no-
battery
1.325 V/V stb
NiCd
NIMH
1.37 V
Llion
1.63 V
SLA
1.9 V
no-
battery
10
A4
RFSH
12
k W
1.9 V
refresh
100 mV
T cut-off
0.75 V
36
k W
TEA1102
2
IB
4
PSD
CONTROL LOGIC
5
TIMER
AND
CHARGE
STATUS
INDICATION
LED
NTC
8
V bat
6
POD
DA/AD
CONVERTER
SUPPLY
BLOCK
7
PTD
12
13
16
3
11
V P
V sl
V S
GND
FCT
MGC818
Fig.1 Block diagram.
m
m
A
4.25 V
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Philips Semiconductors
Preliminary specification
Fast charge ICs for NiCd, NiMH, SLA and
LiIon
TEA1102; TEA1102T;
TEA1102TS
PINNING
SYMBOL
PIN
DESCRIPTION
V stb
1
standby regulation voltage input
(NiCd and NiMH)
IB
2
charge current setting
GND
3
ground
handbook, halfpage
PSD
4
program pin sample divider
V stb
1
20
R ref
V bat
LED
5
LED output
IB
2
19
POD
6
program pin oscillator divider
GND
3
18
AO
PTD
7
program pin time-out divider
PSD
4
17
LS
NTC
8
temperature sensing input
MTV
9
maximum temperature voltage
LED
5
16
V S
TEA1102
RFSH
10
refresh input/output
POD
6
15
PWM
FCT
11
fast charge termination and
battery chemistry identification
PTD
7
14
OSC
NTC
8
13
V sl
V P
V P
12
positive supply voltage
MTV
9
12
V sl
13
switched reference voltage output
RFSH
10
11
FCT
OSC
14
oscillator input
PWM
15
pulse width modulator output
MBH067
V S
16
stabilized reference voltage
LS
17
loop stability pin
AO
18
analog output
V bat
19
single-cell battery voltage input
Fig.2 Pin configuration.
R ref
20
reference resistor pin
1999 Jan 27
5
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