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Intersil Electronic Components Datasheet

ISL9212 Datasheet

Charging System Safety Circuit

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ISL9212 pdf
®
Data Sheet
May 8, 2006
ISL9212
FN9280.1
Charging System Safety Circuit
The ISL9212 is an integrated circuit (IC) optimized to provide
a Li-ion battery redundant safety protection from failures of a
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
P-channel MOSFET to remove the power from the charging
system. In addition to the above protected parameters, the
IC also monitors its own internal temperature and turns off
the P-channel MOSFET when the die temperature exceeds
140°C. Together with the battery charger IC and the
protection module in a battery pack, the charging system
using the ISL9212 has triple-level protection and is two-fault
tolerant.
The IC is designed to turn on the internal PFET slowly to
avoid inrush current at power-up but will turn off the PFET
quickly when input overvoltage is detected, in order to
remove the power before any damage occurs. The ISL9212
has a logic warning output to indicate the fault and an enable
input to allow the system to remove the input power.
Ordering Information
PART #
TEMP.
PART RANGE
MARKING (°C)
PACKAGE
PKG.
DWG. #
ISL9212IRZ* 212Z
(Note)
-40 to 85 12 Ld 4x3 TDFN L12.4x3A
(Pb-free)
ISL9200EVAL1 ISL9200 Evaluation Board
*Add “-T” suffix for tape and reel.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are 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.
Typical Application Circuit
INPUT
C1
VIN
OUT
ISL6292
BATTERY
CHARGER
RILIM
ISL9212
ILIM
VB
EN
GND
WRN
RVB
+
BATTERY
PACK
Features
• Fully Integrated Protection Circuit for Three Protection
Variables
- User Programmable Overcurrent Protection Threshold
- Input Overvoltage Protection in Less Than 1µs
- Battery Overvoltage Protection
• High Immunity of False Triggering Under Transients
• High Accuracy Protection Thresholds
• Warning Output to Indicate the Occurrence of Faults
• Enable Input
• Thermal Enhanced DFN Package
• Pb-Free Plus Anneal Available (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
ISL9212 (4x3 DFN)
TOP VIEW
VIN 1
VIN 2
GND 3
WRN 4
NC 5
NC 6
EPAD
12 NC
11 OUT
10 OUT
9 ILIM
8 VB
7 EN
NOTE: EPAD must be electrically connected to the GND pin.
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. 2006. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.


Intersil Electronic Components Datasheet

ISL9212 Datasheet

Charging System Safety Circuit

No Preview Available !

ISL9212 pdf
ISL9212
Absolute Maximum Ratings (Reference to GND)
Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to 30V
Output and VB Pin (OUT, VB) (Note 1) . . . . . . . . . . . . . . . -0.3 to 7V
Other Pins (ILIM, WRN, EN) . . . . . . . . . . . . . . . . . . . . . -0.3 to 5.5V
Recommended Operating Conditions
Ambient Temperature Range . . . . . . . . . . . . . . . . . . . .-40°C to 85°C
Supply Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3V to 6.5V
Operating Current Range. . . . . . . . . . . . . . . . . . . . . . . . . 0A to 1.5A
Thermal Information
Thermal Resistance (Notes 2, 3)
θJA (°C/W) θJC (°C/W)
4x3 DFN Package . . . . . . . . . . . . . . . .
41
3.5
Maximum Junction Temperature (Plastic Package) . . . . . . . . 150°C
Maximum Storage Temperature Range . . . . . . . . . . . -65°C to 150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
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.
3. θJC, “case temperature” location is at the center of the exposed metal pad on the package underside. See Tech Brief TB379.
Electrical Specifications Typical values are tested at VIN = 5V and 25°C Ambient Temperature, maximum and minimum values are
guaranteed over the recommended operating conditions, unless otherwise noted.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNITS
POWER-ON RESET
Rising VIN Threshold
POR Hysteresis
VPOR
2.4 2.58 2.7
- 100 -
V
mV
VIN Bias Current
VIN Bias Current
IVIN When enabled
When disabled
0.75 0.9 1.05 mA
30 60 100 μA
PROTECTIONS
Input Overvoltage Protection (OVP)
Input OVP Hysteresis
VOVP
6.65 6.8
7.0
V
- 60 100 mV
Input OVP Falling Threshold
6.55 - - V
Input OVP Propagation Delay
- - 1 μs
Overcurrent Protection
Overcurrent Protection Blanking Time
Battery Overvoltage Protection Threshold
Battery OVP Threshold Hysteresis
IOCP
BTOCP
VBOVP
VVB = 3V, RILIM = 25kΩ
0.93
-
4.325
-
1.0
170
4.4
75
1.07
-
4.475
-
A
μs
V
mV
Battery OVP Falling Threshold
4.225
-
-
V
Battery OVP Blanking Time
VB Pin Leakage Current
Over Temperature Protection Rising Threshold
BTBOVP
VVB = 4.4V
- 180 -
μs
- - 20 nA
- 140 -
°C
Over Temperature Protection Falling Threshold
- 90 - °C
LOGIC
EN Input Logic HIGH
1.5 - - V
EN Input Logic LOW
- - 0.4 V
EN Internal Pull Down Resistor
100 200 400
kΩ
WRN Output Logic Low
Sink 5mA current
- 0.35 0.8 V
WRN Output Logic High Leakage Current
- - 1 μA
POWER MOSFET
On Resistance
RDS(ON) 4.6V < VIN < 6.5V
- 170 280 mΩ
2 FN9280.1
May 8, 2006


Part Number ISL9212
Description Charging System Safety Circuit
Maker Intersil Corporation
Total Page 11 Pages
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