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PDF ISL9211 Data sheet ( Hoja de datos )
| Número de pieza | ISL9211 | |
| Descripción | Charging System Safety Circuit | |
| Fabricantes | Intersil Corporation | |
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Data Sheet
January 13, 2009
ISL9211
FN6658.4
Charging System Safety Circuit
The ISL9211 is an integrated circuit (IC) optimized to provide
a redundant safety protection to a Li-ion battery charging
system. The IC monitors the input voltage, the battery
voltage, and the charge current. When any of the three
parameters exceeds its limit, the IC turns off an internal
N-channel MOSFET to remove the power from the charging
system to the battery. In addition to the above protected
parameters, 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 ISL9211 has triple-level
protection and is two-fault tolerant.
The IC is designed to turn on the internal NFET slowly to
avoid inrush current at power up but will turn off the NFET
quickly when the input is overvoltage in order to remove the
power before any damage occurs. The ISL9211 has a logic
flag output to indicate a fault condition.
Typical Application Circuit
INPUT
C1
VIN
OUT
C2
ISL6292
BATTERY
CHARGER
RILIM
ISL9211
ILIM
VB
GND
FAULT
RVB
BATTERY
PACK
Ordering Information
PART NUMBER
TEMP
PART RANGE
MARKING (°C)
PACKAGE PKG.
(Pb-Free) DWG. #
ISL9211IRU58XZ-T* 15X
-40 to +85 8 Ld µTDFN L8.2x2
ISL9211IRU68XZ-T* 16X
-40 to +85 8 Ld µTDFN L8.2x2
*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 NiPdAu plate - e4 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.
Features
• 24V Max Input Voltage
• Supports Up To 1.5A 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
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”
Pinout
ISL9211
(8 LD 2x2 µTDFN)
TOP VIEW
VIN 1
GND 2
NC 3
FAULT 4
8 OUT
7 ILIM
6 VB
5 GND
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. 2008, 2009. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL9211
www.TDaytapSihceaetl4UO.cpomerating Performance The test conditions for the Typical Operating Performance are: VIN = 5V, TA = +25°C,
RILIM = 24.9kΩ, RVB = 200kΩ, Unless Otherwise Noted. (Continued)
VIN(2V/div)
Load Current(500mA/div)
VIN(2V/div)
Load Current(500mA/div)
OUT(2V/div)
Fault(2V/div)
TIME - 400ms/div
FIGURE 8. POWER-UP WAVEFORMS WHEN OUTPUT IS
SHORT-CIRCUITED
OUT(2V/div)
Fault(2V/div)
TIME - 1ms/div
FIGURE 9. ZOOMED-IN VIEW OF FIGURE 8
2.52
2.48
2.44
RISING THRESHOLD
2.40
2.36
2.32
FALLING THRESHOLD
2.28
2.24
2.20
-50 -30 -10 10 30 50 70
TEMPERATURE (°C)
FIGURE 10. VPOR vs TEMPERATURE
90
5.85
5.80
RISING THRESHOLD
5.75
5.70
FALLING THRESHOLD
5.65
5.60
-50 -30 -10 10 30 50 70 90
TEMPERATURE (°C)
FIGURE 11. INPUT OVERVOTLAGE PROTECTION vs
TEMPERATURE
1.04
1.03
1.02
5.0V
4.3V
1.01
1.00
0.99
0.98
0.97
3.0V
0.96
0.95
-50 -30 -10 10 30 50 70 90 110 130
TEMPERATURE (°C)
FIGURE 12. OVERCURRENT PROTECTION vs
TEMPERATURE AT VARIOUS INPUT VOLTAGES
5
0.988
0.986
0.984
0.982
0.980
0.978
0.976
0.974
0.972
-50 -30 -10 10 30 50 70 90 110 130
TEMPERATURE (°C)
FIGURE 13. ILIM PIN VOLTAGE vs TEMPERATURE
FN6658.4
January 13, 2009
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet ISL9211.PDF ] | |
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