Power Sources. ISL9214A Datasheet

ISL9214A Sources. Datasheet pdf. Equivalent

ISL9214A Datasheet
Recommendation ISL9214A Datasheet
Part ISL9214A
Description Li-ion/Li-Polymer Battery Charger Accepting Two Power Sources
Feature ISL9214A; DATASHEET ISL9214A Li-ion/Li-Polymer Battery Charger Accepting Two Power Sources FN6698 Rev 0.00 M.
Manufacture Renesas
Datasheet
Download ISL9214A Datasheet




Renesas ISL9214A
DATASHEET
ISL9214A
Li-ion/Li-Polymer Battery Charger Accepting Two Power Sources
FN6698
Rev 0.00
May 5, 2008
The ISL9214A 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
ISL9214A is an ideal charger for smart handheld devices
that need to communicate with a personal computer via
USB.
The ISL9214A features 28V maximum voltages for both the
cradle and the USB inputs. Due to the 28V rated inputs,
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 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 +125°C, a thermal foldback function
reduces the charge current automatically to prevent further
temperature rise. 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
preset minimum current, the CHG pin will indicate a logic
HIGH signal. This status is latched and will be reset under
one of the following 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
4. The BAT pin voltage falls below the recharge threshold
(~3.9V).
Ordering Information
PART
NUMBER
(Note)
PART
TEMP.
PACKAGE
MARKING RANGE (°C) (Pb-Free)
PKG.
DWG. #
ISL9214AIRZ* 214A
-40 to +85 10 Ld 3x3 DFN L10.3x3C
*Add “-T” suffix for tape and reel. 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
• Complete Charger for Single-Cell Li-ion/Polymer Batteries
• Dual Input Power Sources for Cradle and USB
• Low Component Count
• Integrated Pass Elements
• Fixed 380mA USB Charge Current
• Programmable Cradle Charge Current
• Charge Current Thermaguard™ for Thermal
Protection
• 28V Maximum Voltages for Cradle and USB Inputs
• Adapter Presence and Charge Indications
• Less than 0.5µA Leakage Current Off the Battery When
No Input Power Attached
• Programmable End-of-Charge Current
• Ambient Temperature Range: -40°C to +85°C
• No External Blocking Diode Required
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
ISL9214A
(10 LD DFN)
TOP VIEW
CRDL 1
USB 2
PPR 3
CHG 4
EN 5
10 BAT
9 ICDL
8 GND
7 USBON
6 IMIN
FN6698 Rev 0.00
May 5, 2008
Page 1 of 11



Renesas ISL9214A
ISL9214A
Block Diagram
CRDL
USB
BAT
TEMP
MONITOR
CPPR
ICDL
IMIN
PPR
CHG
REFERENCE
CURRENT
CONTROL
IR
CPPR
LBAT
USB
CRDL BAT
CONTROL
+
VA
-
VREF
ENA
EN
GND
USBON
FN6698 Rev 0.00
May 5, 2008
Page 2 of 11



Renesas ISL9214A
ISL9214A
Typical Applications
A Simple Charger Accepting Power from Both a USB Port and a Desktop Cradle
TO CRADLE
CONNECTOR
C1
R1
TO USB
CONNECTOR
C2
R2
RIMIN
CRDL
BAT
ICDL
ISL9214A
USB
USBON
PPR
CHG
EN
IMIN
GND
RICDL
ON
OFF
R3
D1
DISABLE
ENABLE
TO BATTERY
C3
R4
D2
TABLE 1. COMPONENT SELECTION
RICDL
RIMIN
R3, R4
C1, C2, C3
R1, R2
D1, D2
12.4kfor 0.55A cradle charge current
10kfor 55mA end-of-charge current
350
1µF ceramic capacitor
1
LEDs
A Simple Charger with Programmable Charge Current and Wide Input Voltage Range
TO CRADLE
CONNECTOR
C1
R1
RIMIN
CRDL
BAT
ICDL
ISL9214A
USBON
USB
PPR
CHG
EN
IMIN
GND
RICDL
R3
D1
DISABLE
ENABLE
TO BATTERY
C3
R4
D2
TABLE 2. COMPONENT SELECTION
RICDL
RIMIN
R3, R4
C1, C3
R1
D1, D2
12.4kfor 0.55A cradle charge current
10kfor 55mA end-of-charge current
350
1µF ceramic capacitor
1
LEDs
FN6698 Rev 0.00
May 5, 2008
Page 3 of 11







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