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ISL6258, ISL6258A
To request the full datasheet, please visit www.intersil.com/products/ISL6258 or ISL6258A
Data Sheet
December 11, 2007
FN6571.1
Narrow VDC Regulator/Charger with
SMBus Interface
The ISL6258, ISL6258A are a highly integrated Narrow VDC
system voltage regulator and battery charger controller.
Operating parameters are programmable over the System
Management Bus (SMBus). The ISL6258, ISL6258A are
designed for applications where the system power source is
either the battery pack or the output of the regulator/charger.
This makes the max voltage to the system equal to the max
battery voltage instead of the max adapter voltage. The
ISL6258, ISL6258A also include a system to control trickle
charging deeply discharged batteries while maintaining
system voltage at a user defined minimum. High efficiency is
achieved with a DC/DC synchronous-rectifier buck converter,
equipped with diode emulation for enhanced light load
efficiency and AC adapter boosting prevention. The ISL6258,
ISL6258A can charge two to four series connected
Lithium-ion cells, at up to 8A charge current. The ISL6258
has default settings for 2-cell systems and ISL6258A has
default settings for 3-cell systems. Integrated MOSFET
drivers and bootstrap diode result in fewer components and
smaller implementation area. Low offset current-sense
amplifiers provide high accuracy.
The ISL6258, ISL6258A provide two open drain digital
outputs that indicate the presence of the AC adapter and
trickle charge state. Trickle charge state and AC adapter
present indicators are also available via SMBus. The
ISL6258, ISL6258A also provide two analog outputs that
indicate the adapter current and battery discharge current
with 4% accuracy.
Pinout
ISL6258, ISL6258A
(28 LD TQFN)
TOP VIEW
28 27 26 25 24 23 22
AGATE 1
21 LGATE
DCIN 2
20 VDDP
ACIN 3
19 VDD
VREF 4
18 CSOP
ICOMP 5
17 CSON
AGND 6
16 BGATE
VCOMP 7
15 BMON
8 9 10 11 12 13 14
Features
• ±0.5% System Voltage Accuracy (-10°C to +100°C)
• ±3% Accurate Input Current Limit
• ±3% Accurate Battery Charge Current Limit
• Switching frequency can be reduced via SMBus for higher
efficiency at light load conditions
• Trickle Charge System for Deeply Discharged Batteries
- Automatic Trickle Charge Current (256mA)
- Holds Minimum Voltage to System
• SMBus 2 Wire Serial Interface
• Battery Short Circuit Protection
• Fast System-Load Transient Response
• Monitor Outputs
- Adapter Current (2.5% Accuracy)
- Battery Discharge Current (4% Accuracy)
- Trickle Charge Mode Indicator
- AC Adapter Present Indicator
• 11-Bit Max System Voltage Setting
• 7-Bit Min System Voltage Setting
• 6-Bit Charge Current Setting
• 6-Bit Adapter Current Setting
• Over 8A Battery Charger Current
• Over 8A Maximum Adapter Current
• +8V to +22V Adapter Voltage Range
• Pb-Free (RoHS Compliant)
Applications
• Notebook Computers
• Tablet PCs
• Portable Equipment with Rechargeable Batteries
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright Intersil Americas LLC 2007. All Rights Reserved
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ISL6258, ISL6258A
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 FN6571.1
December 11, 2007