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Intersil Electronic Components Datasheet

ISL9211 Datasheet

Charging System Safety Circuit

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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.


Intersil Electronic Components Datasheet

ISL9211 Datasheet

Charging System Safety Circuit

No Preview Available !

ISL9211 pdf
ISL9211
www.ADabtasSohleuette4UM.caomximum Ratings
Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 26V
Output and VB Pin (OUT, VB) (Note 1) . . . . . . . . . . . . . . -0.3V to 8V
Other Pins (ILIM, FAULT). . . . . . . . . . . . . . . . . . . . . . . -0.3V to 5.5V
Recommended Operating Conditions
Ambient Temperature Range . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Supply Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3V to 24V
Operating Current Range. . . . . . . . . . . . . . . . . . . . . . . . . 0A to 1.5A
Thermal Information
Thermal Resistance (Typical, Note 2)
θJA (°C/W)
8 Ld 2x2 µTDFN Package . . . . . . . . . .
120
Maximum Junction Temperature (Plastic Package) . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTES:
1. The maximum voltage rating for the VB pin under continuous operating conditions is 5.5V. All other pins are allowed to operate continuously at
the absolute maximum ratings.
2. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
Electrical Specifications
Typical values are tested at VIN = 5V and +25°C Ambient Temperature, maximum and minimum values are
established over the recommended operating conditions; 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.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNITS
POWER-ON RESET
Rising VIN Threshold
VPOR
Rising
Falling
- - 2.47 V
2.20 - - V
VIN Bias Current
PROTECTIONS
IVIN RILIM = 24.9k
-
-
1000
µA
Input Overvoltage Protection
VOVP
ISL9211IRU58
ISL9211IRU68
5.6 5.8 6.0
V
6.6 6.8 6.95 V
Input OVP Falling Threshold
ISL9211IRU58
5.55 - - V
ISL9211IRU68
6.55 - - V
Input OVP Response Time (Note 3)
- - 1 µs
Overcurrent Protection
Overcurrent Protection Blanking Time
Battery Overvoltage Protection Threshold
Battery OVP Threshold Hysteresis
IOCP
BTOCP
VBOVP
VVB = 3V, RILIM = 24.9kΩ
0.93 1.0 1.07
- 180 -
4.25 4.34 4.40
- 30 50
A
µs
V
mV
Battery OVP Blanking Time
VB Pin Leakage Current
Over-Temperature Protection Rising Threshold
BTBOVP
VVB = 4.34V
- 180 -
µs
- - 20 nA
- 150 -
°C
Over-Temperature Protection Falling Threshold
- 110 -
°C
LOGIC
FAULT Output Logic Low
Sink 5mA current
- 0.4 0.8 V
FAULT Output Logic High Leakage Current
- - 1.5 µA
POWER MOSFET
On-Resistance (Note 3)
rDS(ON) Measured at 200mA
NOTE:
3. Limits should be considered typical and are not production tested.
- 170 280 mΩ
2 FN6658.4
January 13, 2009


Part Number ISL9211
Description Charging System Safety Circuit
Maker Intersil Corporation
Total Page 9 Pages
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