datasheet4u.com

900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Intersil Electronic Components Datasheet

ISL6257 Datasheet

Highly Integrated Narrow VDC Battery Charger

No Preview Available !

ISL6257 pdf
®
Data Sheet
January 17, 2007
ISL6257
FN9288.2
Highly Integrated Narrow VDC Battery
Charger for Notebook Computers
The ISL6257 is a highly integrated battery charger controller
for Li-Ion/Li-Ion polymer batteries. ISL6257 is designed for
Narrow VDC applications where the system power source is
either the battery pack or the regulated output of the charger.
This makes the max voltage to the system equal to the max
battery voltage instead of the max adapter voltage. Operating
at lower system voltage can improve overall efficiency. High
efficiency is achieved in the charger with 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% per cell and
4.2V - 5% per 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 ISL6257 automatically transitions from
regulating current mode to regulating voltage mode.
Ordering Information
PART
NUMBER
(Notes 1, 2)
PART
TEMP
PACKAGE PKG.
MARKING RANGE (°C) (Pb-free) DWG. #
ISL6257HRZ ISL6257HRZ -10 to +100 28 Ld 5x5 QFN L28.5×5
ISL6257HRZ-T ISL6257HRZ -10 to +100 28 Ld 5x5 QFN L28.5×5
Tape & Reel
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100% matte
tin plate termination finish, which are 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.
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
• 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
• Control Adapter Power Source Select MOSFET
• Thermal Shutdown
• Aircraft Power Capable
• DC Adapter Present Indicator
• Battery Discharge MOSFET Control
• Less than 10µA Battery Leakage Current
• Support Pulse Charging
• Charge any Battery Chemistry: Li-Ion, NiCd, NiMH, etc.
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Notebook, Desknote and Sub-notebook Computers
• Personal Digital Assistant
Pinout
ISL6257 (28 LD QFN)
TOP VIEW
28 27 26 25 24 23 22
EN 1
21 CSOP
CELLS 2
20 CSIN
ICOMP 3
19 CSIP
VCOMP 4
18 SGATE
FB 5
VREF 6
17 BGATE
16 PHASE
CHLIM 7
15 UGATE
8 9 10 11 12 13 14
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. 2006-2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.


Intersil Electronic Components Datasheet

ISL6257 Datasheet

Highly Integrated Narrow VDC Battery Charger

No Preview Available !

ISL6257 pdf
ISL6257
Absolute Maximum Ratings
DCIN, CSIP, CSON to GND. . . . . . . . . . . . . . . . . . . . . -0.3V to +28V
CSIP-CSIN, CSOP-CSON . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V
CSIP-SGATE, CSIP-BGATE . . . . . . . . . . . . . . . . . . . . . -0.3V to 16V
PHASE to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -7V to 30V
BOOT to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +35V
BOOT to VDDP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2V to 28V
ACLIM, ACPRN, CHLIM, DCPRN, VDD to GND. . . . . . . -0.3V to 7V
BOOT-PHASE, VDDP-PGND . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V
ACSET and DCSET to GND (Note 1) . . . . . . . -0.3V to VDD + 0.3V
FB, ICOMP, VCOMP to GND. . . . . . . . . . . . . . -0.3V to VDD + 0.3V
VREF, CELLS to GND . . . . . . . . . . . . . . . . . . . -0.3V to VDD + 0.3V
EN, VADJ, PGND to GND . . . . . . . . . . . . . . . . -0.3V to VDD + 0.3V
UGATE. . . . . . . . . . . . . . . . . . . . . . . . PHASE-0.3V to BOOT + 0.3V
LGATE . . . . . . . . . . . . . . . . . . . . . . . . . PGND-0.3V to VDDP + 0.3V
PGND to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V
Thermal Information
Thermal Resistance
θJA (°C/W) θJC (°C/W)
QFN Package (Notes 2, 3). . . . . . . . . .
39
9.5
QSOP Package (Note 2) . . . . . . . . . . .
80
NA
Junction Temperature Range. . . . . . . . . . . . . . . . . .-10°C to +150°C
Operating Temperature Range . . . . . . . . . . . . . . . .-10°C to +100°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Lead Temperature (soldering, 10s) . . . . . . . . . . . . . . . . . . . . +300°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. ACSET and DCSET may be operated 1V below GND if the current through ACSET and DCSET is limited to less than 1mA.
2. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
3. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications
DCIN = CSIP = CSIN = 18V, CSOP = CSON = 12V, ACSET = DCSET = 1.5V, ACLIM = VREF,
VADJ = Floating, EN = VDD = 5V, BOOT - PHASE = 5.0V, GND = PGND = 0V, CVDD = 1µF, IVDD = 0mA,
TA = -10°C to +100°C, TJ ≤ +125°C, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
SUPPLY AND BIAS REGULATOR
DCIN Input Voltage Range
7 25 V
DCIN Quiescent Current
EN = VDD or GND, 7V DCIN 25V
1.4 3 mA
Battery Leakage Current (Note 4)
DCIN = 0, no load
3 10 µA
VDD Output Voltage/Regulation
VDD Undervoltage Lockout Trip Point
7V DCIN 25V, 0 IVDD 30mA
VDD Rising
4.925
4.0
5.075
4.4
5.225
4.6
V
V
Hysteresis
150 250 400 mV
Reference Output Voltage VREF
FB Feedback Voltage
0 IVREF 300µA
2.365
2.065
2.39 2.415
2.1 2.12
V
V
Battery Charge Voltage Accuracy
CSON = 16.8V, CELLS = VDD, VADJ = Float
-0.5
0.5 %
CSON = 12.6V, CELLS = GND, VADJ = Float
-0.5
0.5 %
CSON = 8.4V, CELLS = Float, VADJ = Float
-0.5
0.5 %
CSON = 17.64V, CELLS = VDD, VADJ = VREF
-0.5
0.5 %
CSON = 13.23V, CELLS = GND, VADJ = VREF
-0.5
0.5 %
CSON = 8.82V, CELLS = Float, VADJ = VREF
-0.5
0.5 %
CSON = 15.96V, CELLS = VDD, VADJ = GND
-0.5
0.5 %
CSON = 11.97V, CELLS = GND, VADJ = GND
-0.5
0.5 %
CSON = 7.98V, CELLS = Float, VADJ = GND
-0.5
0.5 %
TRIP POINTS
ACSET Threshold
1.24 1.26 1.28 V
ACSET Input Bias Current Hysteresis
2.2 3.4 4.4 µA
ACSET Input Bias Current
ACSET 1.26V
2.2 3.4 4.4 µA
2 FN9288.2
January 17, 2007


Part Number ISL6257
Description Highly Integrated Narrow VDC Battery Charger
Maker Intersil Corporation
Total Page 22 Pages
PDF Download
ISL6257 pdf
ISL6257 Datasheet PDF
[partsNo] view html
View PDF for Mobile








Similar Datasheet

1 ISL6251 Low Cost Multi Chemistry Battery Charger Controller Intersil Corporation
Intersil Corporation
ISL6251 pdf
2 ISL6251A Low Cost Multi Chemistry Battery Charger Controller Intersil Corporation
Intersil Corporation
ISL6251A pdf
3 ISL6252 Highly Integrated Battery Charger Controller Intersil
Intersil
ISL6252 pdf
4 ISL6252A Highly Integrated Battery Charger Controller Intersil
Intersil
ISL6252A pdf
5 ISL6253 Highly Integrated Battery Charger Intersil Corporation
Intersil Corporation
ISL6253 pdf
6 ISL6255 Highly Integrated Battery Charger Intersil Corporation
Intersil Corporation
ISL6255 pdf
7 ISL6255A Highly Integrated Battery Charger Intersil Corporation
Intersil Corporation
ISL6255A pdf
8 ISL6256 Highly Integrated Battery Charger Intersil
Intersil
ISL6256 pdf
9 ISL6256A Highly Integrated Battery Charger Intersil
Intersil
ISL6256A pdf





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy