|
|
PDF ISL6252A Data sheet ( Hoja de datos )
| Número de pieza | ISL6252A | |
| Descripción | Highly Integrated Battery Charger Controller | |
| Fabricantes | Intersil | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ISL6252A (archivo pdf) en la parte inferior de esta página. Total 25 Páginas | ||
|
No Preview Available !
®
Data Sheet
ISL6252, ISL6252A
August 25, 2010
FN6498.3
Highly Integrated Battery Charger
Controller for Notebook Computers
The ISL6252, ISL6252A is a highly integrated battery charger
controller for Li-ion/Li-ion polymer batteries. High Efficiency is
achieved by a synchronous buck topology. The low side
MOSFET emulates a diode at light loads to improve the light
load efficiency and prevent system bus boosting.
The constant output voltage can be selected for 2, 3 and 4
series Li-ion cells with 0.5% accuracy over-temperature. It can
also be programmed between 4.2V + 5%/cell and
4.2V - 5%/cell to optimize battery capacity. When supplying
the load and battery charger simultaneously, the input current
limit for the AC adapter is programmable to within 3%
accuracy to avoid overloading the AC adapter, and to allow
the system to make efficient use of available adapter power
for charging. It also has a wide range of programmable
charging current. The ISL6252, ISL6252A provides outputs
that are used to monitor the current drawn from the AC
adapter, and monitor for the presence of an AC adapter. The
ISL6252, ISL6252A automatically transitions from regulating
current mode to regulating voltage mode.
Ordering Information
PART
NUMBER
(Notes 1, 2, 3)
PART
MARKING
TEMP
RANGE PACKAGE PKG.
(°C) (Pb-Free) DWG. #
ISL6252HRZ ISL 6252HRZ -10 to +100 28 Ld 5x5 L28.5x5
QFN
ISL6252HAZ ISL 6252HAZ -10 to +100 24 Ld
QSOP
M24.15
ISL6252AHRZ ISL6252 AHRZ -10 to +100 28 Ld 5x5 L28.5x5
QFN
ISL6252AHAZ ISL6252 AHAZ -10 to +100 24 Ld
QSOP
M24.15
NOTES:
1. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ
special Pb-free material sets, molding compounds/die
attach materials, and 100% matte tin plate plus anneal
(e3 termination finish, which is RoHS compliant and
compatible with both SnPb and Pb-free soldering
operations). Intersil Pb-free products are MSL classified
at Pb-free peak reflow temperatures that meet or
exceed the Pb-free requirements of IPC/JEDEC J STD-
020.
3. For Moisture Sensitivity Level (MSL), please see device
information page for ISL6252, ISL6252A. For more
information on MSL please see techbrief TB363.
Features
• ±0.5% Charge Voltage Accuracy (-10°C to +100°C)
• ±3% Accurate Input Current Limit
• ±3% Accurate Battery Charge Current Limit
• ±25% Accurate Battery Trickle Charge Current Limit
• Programmable Charge Current Limit, Adapter Current
Limit and Charge Voltage
• Fixed 300kHz PWM Synchronous Buck Controller with
Diode Emulation at Light Load
• Overvoltage Protection
• Output for Current Drawn from AC Adapter
• AC Adapter Present Indicator
• Fast Input Current Limit Response
• Input Voltage Range 7V to 25V
• Support 2-, 3- and 4-Cells Battery Pack
• Up to 17.64V Battery-Voltage Set Point
• Thermal Shutdown
• Less than 10µA Battery Leakage Current
http://www.DataSheet4U.net/
• Supports Pulse Charging
• Pb-free (RoHS Compliant)
Applications
• Notebook, Desknote and Sub-notebook Computers
• Personal Digital Assistant
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2007, 2008, 2010. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL6252, ISL6252A
ADAPTER
R8
130k
1%
R9
10.2k
1%
D3
C8
0.1µF
DDCCININ
AACCSSEETT
D4
CCSSIPIP
VCC
DIGITAL
INPUT
C7
1µF
R16
100k
C9
1µF
R5
100k
R10
4.7Ω
ISLIS6L2IS652L562252 CCSSININ
ISL6252A
ISISLL6252
VVDDDDPP
VVDDDD
BBOOOOTT
UGUAGTAETE
AACCPPRRNN
PHPAHSAESE
LGLGATAETE
D/A OUTPUT
OUTPUT
A/D INPUT
HOST
AVDD/VREF
SCL
SDL
A/D INPUT
GND
CCHHLLIMIM
R7: 100Ω
C11
3300pF
5.15A INPUT
CURRENT LIMIT
R11, R12
R13: 10k
C6
6.8nF
EENN
ICICMM
AACCLLIMIM
VVRREEFF
ICICOOMMPP
R6
4.7k
VVCCOOMMPP
C5
10nF
PGPGNDND
CCSOSOPP
CSCOSONN
CCEELLSLS
VAVADDJJ
http://www.DataSheet4U.net/
GGNNDD
R21 2.2Ω
C2
0.1µF
R2
20mΩ
R22 22Ω
SYSTEM LOAD
VDDP
D2
C4
0.1µF
C1:10µF
Q1
Q2
D1
OPTIONAL
L
4.7µH
R11 22Ω
C3
0.047µF
GND R12 22Ω
3-CELLS
FLOATING
4.2V/CELL
R1
20mΩ
C10
22µF
VDD
R23
10k
D5
1N914
CSON
BAT+
BATTERY
PACK
SCL
SDL
TEMP
BAT-
FIGURE 3. ISL6252, ISL6252A TYPICAL APPLICATION CIRCUIT WITH µP CONTROL
5 FN6498.3
August 25, 2010
5 Page 
ISL6252, ISL6252A
Typical Operating Performance DCIN = 20V, 4S2P Li-Battery, TA = +25°C, Unless Otherwise Noted. (Continued)
CHARGE
CURRENT
1A/div
CHLIM
1V/div
FIGURE 16. TRICKLE TO FULL-SCALE CHARGING
Functional Pin Descriptions
BOOT
Connect BOOT to a 0.1µF ceramic capacitor to PHASE pin
and connect to the cathode of the bootstrap Schottky diode.
UGATE
UGATE is the high side MOSFET gate drive output.
LGATE
LGATE is the low side MOSFET gate drive output; swing
between 0V and VDDP.
PHASE
The Phase connection pin connects to the high side
MOSFET source, output inductor, and low side MOSFET
drain.
CSOP/CSON
CSOP/CSON is the battery charging current sensing
positive/negative input. The differential voltage across CSOP
and CSON is used to sense the battery charging current,
and is compared with the charging current limit threshold to
regulate the charging current. The CSON pin is also used as
the battery feedback voltage to perform voltage regulation.
CSIP/CSIN
CSIP/CSIN is the AC adapter current sensing
positive/negative input. The differential voltage across CSIP
and CSIN is used to sense the AC adapter current, and is
compared with the AC adapter current limit to regulate the
AC adapter current.
GND
GND is an analog ground.
DCIN
The DCIN pin is the input of the internal 5V LDO. Connect it
to the AC adapter output. Connect a 0.1µF ceramic
capacitor from DCIN to CSON.
ACSET
ACSET is an AC adapter detection input. Connect to a
resistor divider from the AC adapter output.
ACPRN
Open-drain output signals AC adapter is present. ACPRN
pulls low when ACSET is higher than 1.26V; and pulled high
when ACSET is lower than 1.26V.
EN
EN is the Charge Enable input. Connecting EN to high
enables the charge control function, connecting EN to low
disables charging functions. Use with a thermistor to detect
a hot battery and suspend charging.
http://www.DataSheet4U.net/
ICM
ICM is the adapter current output. The output of this pin
produces a voltage proportional to the adapter current.
PGND
PGND is the power ground. Connect PGND to the source of
the low side MOSFET.
VDD
VDD is an internal LDO output to supply IC analog circuit.
Connect a 1µF ceramic capacitor to ground.
VDDP
VDDP is the supply voltage for the low-side MOSFET gate
driver. Connect a 4.7Ω resistor to VDD and a 1µF ceramic
capacitor to power ground.
ICOMP
ICOMP is a current loop error amplifier output.
VCOMP
VCOMP is a voltage loop amplifier output.
CELLS
This pin is used to select the battery voltage. CELLS = VDD
for a 4S battery pack, CELLS = GND for a 3S battery pack,
CELLS = Float for a 2S battery pack.
11 FN6498.3
August 25, 2010
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet ISL6252A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ISL6252 | Highly Integrated Battery Charger Controller | Intersil |
| ISL6252A | Highly Integrated Battery Charger Controller | Intersil |
| 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 |