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PDF ISL6293 Data sheet ( Hoja de datos )
| Número de pieza | ISL6293 | |
| Descripción | Li-ion/Li Polymer Battery Charger Accepting Two Power Sources | |
| Fabricantes | Intersil Corporation | |
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Data Sheet
January 4, 2006
ISL6293
FN9180.1
Li-ion/Li Polymer Battery Charger
Accepting Two Power Sources
The ISL6293 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 another one from a desktop cradle. The ISL6293 is an
ideal charger for smart handheld devices that need to
communicate with a personal computer via USB.
The ISL6293 features 28V and 7V maximum voltages for the
cradle and the USB inputs respectively. The 28V rating
allows low-cost adapters be safely used. When both inputs
are powered, the cradle input is used to charge the battery.
The charge current is independently programmable for both
inputs with two small resistors. One additional USBP pin
allows the selection of high-power or low-power port for the
USB input. The charger is self-protected against over
temperature. If the die temperature rises above 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 charger remains in operation but
the CHG pin indicates a logic HIGH signal.
Ordering Information
TEMP.
PART RANGE
PART NUMBER MARKING (°C)
PACKAGE
PKG.
DWG. #
ISL6293-2CR
93-2
-40 to 85 10 Ld 3x3 DFN L10.3x3
ISL6293-2CR-T 93-2
10 Ld 3x3 DFN Tape and Reel
ISL6293-2CRZ
(Note)
932Z
-40 to 85 10 Ld 3x3 DFN L10.3x3
(Pb-free)
ISL6293-2CRZ-T 932Z
(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
• Accept Two Power Sources
• Low Component Count
- Integrated Pass Element
- Integrated Charge-Current Sensor with 10% Accuracy
- No External Blocking Diode Required
• Charge Current Thermal Foldback for Thermal
Protection
• 28V Maximum Voltage for the Cradle Input
• Charge Indication
• Adapter Presence Indication
• Less than 1µA Leakage Current off the Battery when No
Input Power Attached
• Ambient Temperature Range: -40°C to 85°C
• Thermally-Enhanced 3x3 DFN Package
• 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
ISL6293-2
(10 LD 3X3 DFN)
TOP VIEW
CRDL 1
USB 2
PPR 3
CHG 4
EN 5
10 BAT
9 ICDL
8 GND
7 USBP
6 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. 2004, 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL6293
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
USB Input Constant Charge Current
ICHARGE USBP = LOW, RIUSB = 80kΩ, VBAT = 3.8V
USB Input Trickle Charge Current
ITRICKLE
USBP = LOW, RIUSB = 80kΩ, VBAT = 2.4V
Given as a percentage of the USB LOW
ICHARGE
END-OF-CHARGE CURRENT THRESHOLD
68 84 100
45.0 50.0 55.0
mA
%
Powered From USB Pin
IEOC
Powered From USB Pin
IEOC
Powered From CRDL Pin
IEOC
PRECONDITIONING CHARGE THRESHOLD
USBP = HIGH, RIUSB = 80kΩ
Given as a percentage of the USB HIGH
ICHARGE
USBP = LOW, RIUSB = 80kΩ
Given as a percentage of the USB LOW
ICHARGE
RICDL = 1.82kΩ,
Given as a percentage of the CRDL ICHARGE
8.0
17.0
5.5
10.5
21.0
8.5
13.0
25.0
11.0
%
%
%
Preconditioning Charge Threshold Voltage
INTERNAL TEMPERATURE MONITORING
VMIN
2.5 2.6 2.7
V
Current Foldback Threshold (Note 5)
LOGIC INPUT AND OUTPUT
TFOLD
85 100 115 °C
USBP Pin Logic Input High
2.0 V
USBP Pin Logic Input Low
0.4 V
USBP Pin Internal Pull Down Resistance
1000
kΩ
EN Pin Logic Input High
1.2 V
EN Pin Logic Input Low
0.4 V
EN Pin Internal Pull Down Resistance
1000
kΩ
CHG/PPR Sink Current
Pin Voltage = 0.8V
15 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 may be reduced by the thermal foldback function, depending on the heatsinking condition of the test setup.
6. The threshold value at which the charger output is reduced to near zero. Guaranteed by characterization or correlation to other test.
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
selectable between 100mA and 500mA maximum with the
USBP pin when the RIUSB = 80kΩ. 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 hot plug event occurs.
PPR (Pin 3)
Power presence indication. This is an open-drain output pin
that outputs a logic LOW when either the USB input voltage
or the CRDL input voltage is above its POR level, regardless
if the charger is enabled or disabled. This pin provides a
wake-up signal to a microprocessor when either the cradle
or the USB power is connected.
5 FN9180.1
January 4, 2006
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet ISL6293.PDF ] | |
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