isl9517

ISL9517
To request the full datasheet, please visit www.intersil.com/products/ISL9517
Data Sheet
August 27, 2008
Highly Integrated Narrow VDC Battery
Charger for Notebook Computers
FN6750.0
Features
• ±0.5% Charge Voltage Accuracy (-10°C to +100°C)
The ISL9517 is a highly integrated battery charger controller
for Li-Ion/Li-Ion polymer batteries. ISL9517 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 1.5% 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 ISL9517 automatically
transitions from regulating current mode to regulating voltage
mode.
• ±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-Cell 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
Pinout
• Support Pulse Charging
ISL9517
(28 LD QFN)
TOP VIEW
• Charge any Battery Chemistry: Li-Ion, NiCd, NiMH, etc.
DCDET
ADET
VDD
DCIN
DCPRN
ADPRN
CSON
• Pb-Free (RoHS Compliant)
28
27
26
25
24
23
22
Applications
• Notebook, Desknote and Sub-notebook Computers
CSIN
ICOMP
3
19
CSIP
VCOMP
4
18
AGATE
FB
5
17
BGATE
PART
NUMBER
(Note)
VREF
6
16
PHASE
ISL9517HRZ
CHLIM
7
15
UGATE
ISL9517HRZ-T* ISL9517 HRZ -10 to +100 28 Ld 5x5 QFN L28.55
8
9
10
11
12
13
14
BOOT
20
VDDP
2
LGATE
NCELLS
PGND
CSOP
GND
21
VADJ
1
ACLIM
EN
1
• Personal Digital Assistant
Ordering Information
PART
MARKING
TEMP
RANGE
(°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL9517 HRZ -10 to +100 28 Ld 5x5 QFN L28.55
*Please refer to TB347 for details on reel specifications.
NOTE: 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.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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All other trademarks mentioned are the property of their respective owners.
ISL9517
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9001 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
2
FN6750.0
August 27, 2008