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Intersil Electronic Components Datasheet

ISL9221 Datasheet

Dual Input Lithium Ion Battery Charger

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®
Data Sheet
April 3, 2008
ISL9221
FN6541.1
Dual Input Lithium Ion Battery Charger
with OVP USB Bypass and 10mA LDO
The ISL9221 Lithium Ion charging IC is designed to meet the
charging requirements of most of today’s handheld devices.
The IC provides two inputs for either USB connection where
the current is limited by the USB standard or for
powering/charging from a power adapter.
If the voltage at either VUSB or VDC pin is within the safe
allowable range, the PPR pin is pulled low indicating to the
system processor that external power is available.
Charging can be enabled/disabled by controlling the state of
the EN pin. While charging, the CHG pin is pulled low
indicating the battery is being charged.
The battery is charged to 4.2V with only a 1% error across
the temperature range. USB charge current, Adapter charge
current and charge termination currents can be programmed
via external resistors.
The ISL9221 adds an additional feature in providing a limited
amount of current to system architecture while protecting the
system from destructively high voltage.
The device contains Thermal regulation and protection to
provide additional safety features of this device. When the
temperature exceeds +125°C, the current will fold back to
reduce and control the die temperature.
Ordering Information
PART
NUMBER
(Note)
PART
TEMP.
MARKING RANGE (°C)
PACKAGE PKG.
(Pb-Free) DWG. #
ISL9221IRZ 9221
-40°C to +85°C 12 Ld 4x3 DFN L12.4x3
ISL9221IRZ-T* 9221
-40°C to +85°C 12 Ld 4x3 DFN L12.4x3
*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 100% matte tin plate PLUS ANNEAL - e3 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
• Lithium Ion/Polymer battery charging
• Dual input - USB host or car/wall adapter
• Input voltage withstanding up to 28V
• 5.4V overvoltage protection on VUSB inputs
• Charging current up to 1.2A
• 4.9V/10mA linear regulator with input OVP
• Current limit on bypass path
• Programmable end-of-charge current
• Programmable charging current
• Programmable USB current limit
• Charging and power present indicator pins
• Charge enable pin
• Reverse current protection
• Pb-free (RoHS compliant)
Applications
• Smart Handheld Devices
• Cell Phones, PDAs, MP3 Players
• Digital Still Cameras
• Handheld Test Equipment
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
• Technical Brief TB389 “PCB Land Pattern Design and
Surface Mount Guidelines for QFN Packages”
Pinout
ISL9221
(12 LD DFN)
TOP VIEW
VDC 1
VUSB 2
PPR 3
CHG 4
EN 5
IMIN 6
12 VDC_LDO
11 BAT
10 USB_BYP
9 IVDC
8 GND
7 IUSB
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. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.


Intersil Electronic Components Datasheet

ISL9221 Datasheet

Dual Input Lithium Ion Battery Charger

No Preview Available !

ISL9221
Absolute Maximum Ratings
Supply Voltage (VDC, VUSB). . . . . . . . . . . . . . . . . . . . . . -0.3V to 28V
Other Input Voltage (EN, IMIN, IUSB, IVDC) . . . . . . . . . . -0.3V to 7V
Open Drain Pull Voltage (PPR, CHG) . . . . . . . . . . . . . . .-0.3V to 7V
Other Pin Voltage(VDC_LDO, USB_BYP, VBAT) . . . . . .-0.3V to 7V
Recommended Operating Conditions
Ambient Temperature Range . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Supply Voltage (VUSB) . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V to 5.3V
Supply Voltage (VDC) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V to 6.7V
Typical Adapter Charge Current . . . . . . . . . . . . . . . . 100mA to 1.2A
Typical USB Charge Current . . . . . . . . . . . . . . . . 46.5mA to 465mA
Typical USB Bypass Current . . . . . . . . . . . . . . . . . . . 0mA to 200mA
Typical LDO Current . . . . . . . . . . . . . . . . . . . . . . . . . . 0mA to 10mA
Thermal Information
Thermal Resistance (Typical, Notes 1, 2) 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
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. 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.
2. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
3. Parts are 100% tested at +25°C. Temperature limits established by characterization and are not production tested.
Electrical Specifications Typical Values are tested at USB = VDC = 5V and ambient temperature at +25°C, unless otherwise noted. All
maximum and minimum values are guaranteed under the recommended operating conditions.
PARAMETERS
SYMBOL
CONDITIONS
MIN
(Note 3)
TYP
MAX
(Note 3) UNITS
CHARGER POWER-ON THRESHOLDS
Rising VUSB/VDC Threshold
3.4 3.9 4.2 V
Falling VUSB/VDC Threshold
INPUT VOLTAGE OFFSET
Rising Edge of VDC or VUSB Relative to
VBAT
Falling Edge of VDC or VUSB Relative
to VBAT
STANDBY CURRENT
VOSHC
VOSLC
VBAT = 4.0V, use CHG pin to indicate the
comparator output
BAT Pin Sink Current
VDC Pin Supply Current
VUSB Pin Supply Current
VDC/USB Pin Supply Current
VOLTAGE REGULATION
ISTANDBY
IVDC
IVUSB
EN = HIGH or both inputs are floating
EN = HIGH, ILDO = 0
EN = HIGH, USB_BYP disconnected
EN = LOW, ILDO = 0, USB_BYP disconnected
Output Voltage
VDC Linear ON-resistance
USB Linear ON-resistance
CHARGE CURRENT
VBAT
Load = 10mA
Load = 10mA (TJ = +25°C)
VBAT =3.8V, IVDC = 0.3A, (TJ = +25°C)
VBAT =3.8V, IUSB = 0.3A, (TJ = +25°C)
IVDC Pin Output Voltage
VDC Constant Current Accuracy
VDC Trickle Charge Current
VIVDC VBAT = 3.8V
IVDC_CHRG RIVDC = 12.4kΩ, VBAT = 2.7V to 3.8V
IVDC_TRKL RIVDC = 12.4kΩ, VBAT = 2.2V, given as a % of the
IVDC_CHARGE
3.2
-
20
-
-
-
-
4.158
4.174
-
-
1.19
500
16
3.7
150
80
0.05
365
300
0.63
4.2
4.2
600
600
1.22
550
18
4.0 V
250 mV
- mV
0.5 µA
420 µA
360 µA
0.85 mA
4.242
4.226
-
-
V
V
mΩ
mΩ
1.25 V
580 mA
20 %
2 FN6541.1
April 3, 2008


Part Number ISL9221
Description Dual Input Lithium Ion Battery Charger
Maker Intersil
Total Page 11 Pages
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