|
|
PDF AIC1782 Data sheet ( Hoja de datos )
| Número de pieza | AIC1782 | |
| Descripción | Dual-Battery Charge Controller | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AIC1782 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
|
No Preview Available !
AIC1782
Dual-Battery Charge Controller
FEATURES
Quick and Easy Testing for Production.
Sequential Charging Control of Two
NiMH/NiCd Battery Packs.
Reliable Sequential Fast Charge Control of
Dual NiMH and/or NiCd Battery Packs, even
with a Fluctuating Charging Current.
Fast Charge Termination by: ∆T / ∆t , −∆V,
0∆V , Safety Timer, Maximum Temperature,
Maximum Voltage.
Safety Timer and ∆T / ∆t Detection Slope
Linearly Adjustable.
Battery Voltage Protection Range Selectable.
Mode of Battery Temperature Protection Se-
lectable.
Protection against Battery Voltage and Battery
Temperature Faults.
Selectable LED Display Mode for Battery
Status.
Five Pulsed Trickle Charge Modes.
Discharge-before-Charge Function Available to
Eliminate Memory Effect.
20-pin DIP or SO Packages.
APPLICATIONS
Dual-Battery Fast Chargers for:
Mobile Phones.
Notebook and Laptop Personal Computers.
Portable Power Tools and Toys.
Portable Communication Equipments.
Portable Video & Stereo Equipments.
1.55
Charge Current = 600mA
Cell Capacity = 550mA
NiMH Battery
1.45
100
80
Cell Voltage
1.35
60
1.25
1.15
Fig. 1
40
Temperature
0
20
10 20 30 40 50 60
Charge Time (min.)
Battery Charging Characteristics Resulted from
an AIC1782-Controlled Charger with a Fluc-
tuating Charging Current
DESCRIPTION
The AIC1782 fast charge controller is designed
for intelligent sequential charging of dual NiMH
and NiCd batteries without the risk of malfunction.
After powered on, the AIC1782 charging se-
quence gives priority to battery pack A, repre-
sented by input signals of ATS and ABV pins,
over battery pack B, represented by BTS and
BBV pin signals. The AIC1782 automatically
switches charging current to charge the standby
battery pack after the battery pack being charged
finishes its charging or encounters a fault condi-
tion. −∆V (-0.25%) detection, 0∆V (peak voltage
timer) detection, and ∆T / ∆t detection are the
primary methods employed by the AIC1782 to
terminate fast charge. The fast charge can also
be cut off by maximum battery voltage and
maximum battery temperature detection along
with the safety timer to prevent charging under
fault conditions of the charging system or the
battery itself.
Both ∆T / ∆t and − ∆V detection methods have
been proved powerful in terminating fast charging
for NiMH and NiCd batteries. The AIC1782 utilizes
the combination of these two methods to achieve
reliable decision of ending fast charge and prevent
misaction caused by using −∆V detection alone
under certain conditions. Fig. 1 shows an example
of charging curve of a battery charged by a fluc-
tuating current from a NiMH battery charger which
uses the AIC1782 controller IC to achieve optimal
charging. The ∆T / ∆t or −∆V detection circuitry
may be disabled independently for different appli-
cations, such as system-integrated chargers,
chargers with varying charge current, or battery
packs lack of temperature sensing thermistor.
Analog Integrations Corporation
DS-1782-00
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
TEL: 886-3-5772500 FAX: 886-3-5772510
www.analog.com.tw
1
1 page  
AIC1782
TYPICAL PERFORMANCE
VCC=5V, refer to Test Circuit)
Supply Current vs Supply Voltage
1.18
CHARACTERISTICS (Ta=25°C, R2=100KΩ,
Safety Timer vs Supply Volatge
81.0
1.12
80.5
1.06
1.00
4.4 4.6 4.8
5.0 5.2
5.4
VCC (V)
80.0
79.5
79.0
4.4 4.6 4.8 5.0 5.2 5.4
VCC (V)
Safety Timer vs Temperature
82.0
Supply Current vs Temperature
1.26
81.0
80.0
79.0 0
20 40 60
Temperature(°C)
1.14
1.02
0.90
80 0
20 40 60
Temperature (°C)
80
ABV and BBV (High) Limit vs Temperature
(SEL3>3V)
2.74
2.70
2.66
ABV and BBV (High) Limit vs Temperature
(SEL3<2V)
2.03
2.02
2.00
2.62
0
20 40 60
Temperature (°C)
80
1.98
0
20 40
Temperature (°C)
60
80
5
5 Page 
(d) 0.3V> SEL3
Acceptable ABV/BBV Range:
Before initial timer: 0.16V~2 V
After initial timer:1.2V~2V
Temperature Protection Mode:
If temperature is too high, battery charging
is regarded as completed. If temperature is
too low, function of ∆T / ∆t detection is
disabled, just as thermistor is not existing.
Battery Voltage Measurement
The AIC1782 measures the battery voltage
through ABV and BBV pins, which is connected
to battery positive terminal through a resistor-
divider network, as shown in Fig. 2. The ac-
ceptable limit of divided battery voltage is de-
termined by the input voltage of SEL3 pin.
VBAT
RA
RB
R6
+ 100K
C5 C6
ABV/BBV
AIC1782
Fig. 2 Battery Voltage Divider
For SEL3 > (VCC/2) + 0.4V, the suggested di-
vider resistances of RA and RB for the corre-
sponding number of battery cells are as below:
BATTERY
CELLS
2~4
3~6
4~8
5~10
6~12
8~16
RA/RB
2
3.3
4.9
6.4
7.8
10.8
RA (KΩ) RB (KΩ)
240 120
300 91
300 62
300 47
310 39
390 36
AIC1782
For SEL3 < (VCC/2) -0.4V, the suggested divider
resistances of RA and RB for the corresponding
number of battery cells are as below:
BATTERY
CELLS
2
3
4
5
6
8
10
12
16
RA/RB
1
2
3
4
5
7
9
11
15
RA(KΩ) RB (KΩ)
240 240
240 120
240 80
300 75
300 60
360 51
360 40
390 36
410 27
Battery Temperature Measurement
The AIC1782 employs a negative temperature
coefficient (NTC) thermistor to measure the
battery’s temperature. The thermistor is inher-
ently nonlinear with respect to temperature. To
reduce the effect of nonlinearity, a resistor-
divider network in parallel with the thermistor is
recommended. A typical application circuit is
shown in Fig. 3.
VBAT
VCC
Rx 5
VCC
ATS/BTS
C7 AIC1782
Ry 16
GND
Fig. 3 Battery Temperature Sense Circuit
with a Negative Temperature Coef-
ficient (NTC) Thermistor
16
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet AIC1782.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AIC1781 | Battery Charge Controller | Analog Intergrations Corporation |
| AIC1781A | Battery Charge Controller | Analog Intergrations Corporation |
| AIC1781CN | Battery Charge Controller | Analog Intergrations Corporation |
| AIC1781CS | Battery Charge Controller | Analog Intergrations Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |