ISL9221 Datasheet PDF - Intersil
| Part Number | ISL9221 | |
| Description | Dual Input Lithium Ion Battery Charger | |
| Manufacturers | Intersil | |
| Logo |  |
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There is a preview and ISL9221 download ( pdf file ) link at the bottom of this page. Total 11 Pages | ||
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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.
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ISL9221
The USB_BYP and VDC_LDO stay on regardless of the
state of this pin. This ensures that the processor can be
powered up when an external source is connected to the
VDC or VUSB input pin.
PPR
Power presence indication pin. This pin is used to notify the
system processor or enable the power circuitry when a
source is connected. The pin is an open drain output pin,
which pulls low when a valid voltage (above POR) is present
at either the VDC or VUSB pin. The PPR pin is held low
regardless of the state of the EN pin. If connected to the
processor, a pull-up resistor should be connected to the
processors I/O supply. If connected to power circuitry, a
pull-up should be tied to the appropriate bypass supply.
Typical Application
CHG
Charge indication pin. This open-drain pin is pulled low to
indicate when the battery is being charged. If connected to
the processor, a pull-up resistor should be connected to the
processors I/O supply.
The CHG pin can also be used to drive an LED to indicate to
the user the battery is being charged.
GND
Ground pin. This provides the ground path for all internal
circuits.
LDO OUTPUT
VDC INPUT
USB INPUT
USB_BYP
OFF
ON
VDC
VUSB
ISL9221
BAT
GND
FIGURE 1. APPLICATIONS CIRCUIT
TO MCU
TO BATTERY
5 FN6541.1
April 3, 2008
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for ISL9221 electronic component. |
| Information | Total 11 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ ISL9221.PDF Datasheet ] | |
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