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PDF ISL6299A Data sheet ( Hoja de datos )
| Número de pieza | ISL6299A | |
| Descripción | Li-ion/Li-Polymer Battery Charger Accepting Two Power Sources | |
| Fabricantes | Intersil Corporation | |
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Data Sheet
January 3, 2006
ISL6299A
FN9212.1
Li-ion/Li-Polymer Battery Charger
Accepting Two Power Sources
The ISL6299A is a fully integrated low-cost single-cell Li-ion
or Li-polymer battery charger. The charger accepts two
power inputs, normally one from a USB (Universal Serial
Bus) port and the other from a desktop cradle. The
ISL6299A is an ideal charger for smart handheld devices
that need to communicate with a personal computer via
USB.
The ISL6299A features 28V and 7V maximum voltages for
the cradle and the USB inputs respectively. Due to the 28V
rating for the cradle input, low-cost, large output tolerance
adapters can be used safely. When both inputs are powered,
the cradle input is used to charge the battery. The charge
current is programmable for the cradle input with a small
resistor. The end-of-charge current for the cradle input is
also programmable by another external resistor. The charger
incorporates Thermaguard™ which protects the IC against
over temperature. If the die temperature rises above a
typical value of 100°C, a thermal foldback function reduces
the charge current automatically to prevent further
temperature rise. The charger preconditions the battery with
low current when the battery voltage is below 2.6V. The
charger has two indication pins. The PPR (power present)
pin outputs an open-drain logic LOW when either the cradle
or the USB input power is attached. The CHG (charge) pin is
also an open-drain output that indicates a logic LOW when
the charge current is above a minimum current level. When
the charge current is below the minimum current, the CHG
pin indicates a logic HIGH signal and the status is latched.
The latch will be reset at one of these events: (1) the part is
disabled and re-enabled; (2) the selected input source has
been removed and re-applied, (3) The USBON turns LOW,
or (4) The BAT pin voltage falls below the recharge threshold
(~4.0V).
Ordering Information
PART #
PART
TEMP.
PKG.
MARKING RANGE (°C) PACKAGE DWG. #
ISL6299AIRZ 99AZ
(Note)
-40 to 85 10 Ld 3x3 DFN L10.3x3C
(Pb-free)
ISL6299AIRZ-T 99AZ
(Note)
10 Ld 3x3 DFN Tape and Reel (Pb-free)
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.
Features
• Complete Charger for Single-Cell Li-ion/Polymer Batteries
• Dual Input Power Sources for Cradle and USB
• Low Component Count
• Integrated Pass Element
• Fixed 380mA USB Charge Current
• Programmable Cradle Charge Current
• Charge Current Thermaguard™ for Thermal
Protection
• 28V Maximum Voltage for the Cradle Input
• Charge Indication
• Adapter Presence Indication
• Less than 0.5µA Leakage Current off the Battery when No
Input Power Attached
• Programmable end-of-charge current with latch for Cradle
Input
• Ambient Temperature Range: -40°C to 85°C
• No External Blocking Diode Required
• Pb-Free Plus Anneal Available (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
ISL6299A (DFN)
TOP VIEW
CRDL 1
USB 2
PPR 3
CHG 4
EN 5
10 BAT
9 ICDL
8 GND
7 USBON
6 IMIN
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. 2005-2006. All Rights Reserved. Thermaguard is a trademark of Intersil Americas Inc.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL6299A
Electrical Specifications Typical Values Are Tested at USB = CRDL = 5V and ambient temperature is at 25°C, Unless Otherwise Noted. All
Maximum and Minimum Values Are Guaranteed Under the Recommended Operating Conditions. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNITS
PRECONDITIONING CHARGE THRESHOLD
Preconditioning Charge Threshold Voltage
INTERNAL TEMPERATURE MONITORING
VMIN
2.5 2.6 2.7
V
Current Foldback Threshold (Note 7)
LOGIC INPUT AND OUTPUT
TFOLD
85 100 115 °C
USBON Logic Input High
1.3 - - V
USBON Logic Input LOW
- - 0.4 V
EN Pin Logic Input High
1.3 - - V
EN Pin Logic Input Low
- - 0.4 V
EN Pin Internal Pull Down Resistance
350 600 850
kΩ
USBON Pin internal Pull Down Resistance
700 1000 1300
kΩ
CHG/PPR Sink Current
Pin Voltage = 0.8V
10 -
- mA
NOTES:
3. The 4.0V VBAT is selected so that the CHG output can be used as the indication for the offset comparator output indication. If the VBAT is lower
than the POR threshold, no output pin can be used for indication.
4. The maximum and minimum limits are guaranteed over -40°C to 70°C ambient temperature range.
5. The charge current can be affected by the thermal foldback function if the IC under the test setup cannot dissipate the heat.
6. Constant current can be affected if the junction temperature exceeds 70 °C.
7. Guaranteed by characterization or correlation to other test.
8. Tested at TJ = 25°C.
Functional Pin Description
CRDL (Pin 1)
Cradle input. This pin is usually connected to a cradle power
input. The maximum input voltage is 28V. The charge
current from this pin is programmable with the ICDL pin up to
1A. When this pin is connected to a power source, no charge
current is drawn from the USB pin. A 1µF or larger value
ceramic capacitor is recommended for decoupling.
USB (Pin 2)
USB input. This pin is usually connected to a USB port
power connector. Other sources that are lower than 5.5V are
also acceptable. The charge current from the USB pin is
fixed at typically 380mA. A 1µF or larger value ceramic
capacitor is recommended for decoupling. It is also
recommended to have a 1Ω resistor in series with the
decoupling capacitor to prevent an over-shoot voltage when
a USB cable is plugged in.
PPR (Pin 3)
Power presence indication. An open-drain output pin which
turns ON when either the USB input voltage or the CRDL
input voltage is above its POR level, regardless if the
charger is enabled or disabled. Otherwise turns OFF. This
pin provides a wake-up signal to a microprocessor when
either the cradle or the USB power is connected.
CHG (Pin 4)
Charge indication pin. An open-drain output which turns ON
when the charge current from the cradle input is above
programmable IMIN or when the charge current from the
USB input is above the fixed end of charge current
threshold. Otherwise turns OFF.
EN (Pin 5)
Enable logic input. Connect to LOW or leave floating to
enable the charger.
IMIN (Pin 6)
IMIN is the programmable input for the end-of-charge
current. IMIN is calculated by the following equation:
IMIN = -R1---4-I--M4----7-I--N8-- – 4
(mA)
Where RIMIN is in kΩ. IMIN is only applicable to the cradle
charging. The USB EOC current has been fixed as shown on
the electrical specification table.
5 FN9212.1
January 3, 2006
5 Page | ||
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| PDF Descargar | [ Datasheet ISL6299A.PDF ] | |
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