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PDF ISL9211B Data sheet ( Hoja de datos )
| Número de pieza | ISL9211B | |
| Descripción | Charging System Safety Circuit | |
| Fabricantes | Intersil | |
| Logotipo |  |
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DATASHEET
Charging System Safety Circuit
ISL9211B
The ISL9211B is an integrated circuit (IC) optimized to provide
a redundant safety protection to a Li-ion battery charging
system. The IC monitors input voltage, battery voltage, and
charge current. When any of these parameters exceeds its
limit, the IC turns off an internal N-channel MOSFET to remove
power from the charging system to the battery. The IC also
monitors its own internal temperature and turns off the
N-channel MOSFET when the temperature exceeds +150°C.
Together with the battery charger IC and the protection module
in a battery pack, the charging system using the ISL9211B has
triple-level protection and is two-fault tolerant.
The IC is designed to turn on the internal NFET slowly, to avoid
in-rush current at power-up. It turns off the NFET quickly when
the input is overvoltage, to remove power before damage
occurs. The ISL9211B has a logic flag output to indicate a fault
condition. The enable input allows the system to cut off the
input power, if needed.
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
• Technical Brief TB379 “Thermal Characterization of
Packaged Semiconductor Devices”
• Technical Brief TB389 “PCB Land Pattern Design and
Surface Mount Guidelines for QFN Packages”
Features
• 24V Max Input Voltage
• Supports Up To 2.0A Input Current
• Fully Integrated Protection Circuit for Three Protected
Variables
• High Accuracy Protection Thresholds
• User Programmable Overcurrent Protection Threshold
• Responds to Input Overvoltage in Less Than 1µs
• High Immunity of False Triggering Under Transients
• Fault Indication for Various Fault Occurrence
• Easy to Use
• Pb-Free (RoHS Compliant)
Applications
• Cell Phones
• Digital Still Cameras
• PDAs and Smart Phones
• Portable Instruments
• Desktop Chargers
INPUT
INPUT
C1
RLIM
VIN OUT
C2
ISL9211B
ILIM
VB
EN
GND
FAULT
ISL6292
BATTERY
CHARGER
RVB
DISA
ENA
BATT
PACK
FIGURE 1. TYPICAL APPLICATION CIRCUIT
November 4, 2014
FN7861.1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas LLC. 2011, 2014. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL9211B
Electrical Specifications Boldface limits apply over the operating temperature range, -40°C to +85°C. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
(Note 8)
MAX
TYP (Note 8)
UNITS
FAULT Output Logic High Leakage Current
Pin Voltage = 4.2V
- - 1.5 µA
POWER MOSFET
On-Resistance (Note 7)
rDS(ON) Measured at 200mA
- 170 280 mΩ
NOTES:
7. Limits should be considered typical and are not production tested.
8. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
Typical Application
INPUT
C1
VIN
OUT
C2
ISL6292
BATTERY
CHARGER
ISL9211B
ILIM
VB
RVB
EN
RLIM
GND
FAULT
DISA
ENA
BATT
PACK
PART
RLIM
RVB
C1,C2
DESCRIPTION
24.9kΩ
200kΩ to 1MΩ
1µF/25V X5R ceramic capacitor
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5
FN7861.1
November 4, 2014
5 Page 
ISL9211B
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make
sure you have the latest Rev.
DATE
REVISION
CHANGE
November 4, 2014
FN7861.1 Updated Note 2 for the Ordering Information on page 3.
July 8, 2011
FN7861.0 Initial release.
Products
Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The Company's products
address some of the industry's fastest growing markets, such as, flat panel displays, cell phones, handheld products, and notebooks.
Intersil's product families address power management and analog signal processing functions. Go to www.intersil.com/products for a
complete list of Intersil product families.
*For a complete listing of Applications, Related Documentation and Related Parts, please see the respective device information page
on intersil.com: ISL9211B
To report errors or suggestions for this datasheet, please go to www.intersil.com/askourstaff
FITs are available from our website at http://rel.intersil.com/reports/search.php
For additional products, see www.intersil.com/product_tree
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found 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
Submit Document Feedback 11
FN7861.1
November 4, 2014
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ISL9211B.PDF ] | |
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