ISL6258A [RENESAS]
Narrow VDC Regulator/Charger with SMBus Interface;
| 型号： | ISL6258A |
| 厂家： | 
RENESAS TECHNOLOGY CORP |
| 描述： | Narrow VDC Regulator/Charger with SMBus Interface |
| 文件： | 总2页 (文件大小：185K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DATA SHORT
To request the full datasheet, please visit www.intersil.com/products/ISL6258 or ISL6258A
ISL6258, ISL6258A
FN6571
Rev 1.00
December 11, 2007
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.
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
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.
• 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)
Pinout
ISL6258, ISL6258A
(28 LD TQFN)
TOP VIEW
Applications
• Notebook Computers
28 27 26 25 24 23 22
AGATE
DCIN
LGATE
VDDP
VDD
1
2
3
4
5
6
7
21
20
19
18
• Tablet PCs
• Portable Equipment with Rechargeable Batteries
ACIN
VREF
CSOP
ICOMP
AGND
VCOMP
17 CSON
BGATE
BMON
16
15
8
9 10 11 12 13 14
FN6571 Rev 1.00
December 11, 2007
Page 1 of 2
ISL6258, ISL6258A
© Copyright Intersil Americas LLC 2007. All Rights Reserved.
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For additional products, see www.intersil.com/en/products.html
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such
modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets 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
FN6571 Rev 1.00
December 11, 2007
Page 2 of 2
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