DATASHEET
ISL9205, ISL9205A, ISL9205B, ISL9205C, ISL9205D
FN9252
Rev 4.00
Li-ion Battery Charger
Dec 20, 2018
The ISL9205, ISL9205A, ISL9205B, ISL9205C, and ISL9205D
Features
are integrated single-cell Li-ion or Li-polymer chargers capable
Complete charger for single-cell Li-ion/polymer batteries
of operating at an input voltage as low as 2.5V. The low
operating voltage allows the charger to work with a variety of
Integrated pass element and current sensor
AC adapters.
No external blocking diode required
The ISL9205 family operates as a linear charger when the AC
Low component count and cost
adapter is a voltage source. The battery is charged in a
25mV voltage accuracy over-temperature and input voltage
standard Li-ion charge profile, that is, a Constant Current
range
phase followed by a Constant Voltage phase (CC/CV). The
charge current during the Constant Current phase is
15mV voltage accuracy at room temperature
determined by the external resistor connected to the IREF pin.
Programmable charge current
When the adapter output is a current-limited voltage source
Programmable end-of-charge current (ISL9205)
and the current limit is smaller than the programmed constant
current of the IC, the ISL9205 operates as a pulse charger
Charge current thermal foldback for thermal protection
where the charge current is determined by the current limit of
(Thermaguard)
the AC adapter during the Constant Current phase. The
Trickle charge for fully discharged batteries
ISL9205 operates in a linear mode during the constant voltage
Power presence and charge indications
phase in both adapter cases.
NTC interface (not available in some package options)
The ISL9205 family incorporates Thermaguard, which protects
the IC against over-temperature. If the die temperature rises
Less than 3A leakage current off the battery when no input
above a typical value of +100C, the thermal foldback
power attached or charger disabled
function reduces the charge current to prevent further
Ambient temperature range: -40C to +85C
temperature rise. The ISL9205 includes an external
DFN, QFN packages
temperature monitoring function (not available in some
package options). A Negative Temperature Coefficient (NTC)
Pb-free (RoHS compliant)
thermistor is connected between the TEMP pin and GND to
monitor the battery or ambient temperature. The ISL9205 also
Applications
includes a timer to set the time reference for various charge
Mobile phones
time limits. The timer is programmable with an external
Bluetooth devices
capacitor. Two logic inputs and two open-drain logic outputs
are available for controlling the charger and indicating the
PDAs
charger status. The EN pin enables the charger. The TOEN pin
MP3 players
(available in the ISL9205) enables the timeout function so that
the charge is terminated when the preset time limits have Stand-alone cradle or travel chargers
been reached. The FAULT pin is an open-drain output that turns
Other handheld devices
on when a fault condition is encountered. The STATUS pin is
also an open-drain output that turns on when the charger is
Related Literature
delivering current.
For a full list of related documents, visit our website:
- ISL9205, ISL9205A, ISL9205B, ISL9205C, ISL9205D
device pages
FN9252 Rev 4.00 Page 1 of 17
Dec 20, 2018ISL9205, ISL9205A, ISL9205B, ISL9205C, ISL9205D
Ordering Information
PART NUMBER PART TEMP. TAPE AND REEL PACKAGE PKG
(Notes 2, 3) MARKING RANGE (C) V (V) VSEN TEMP TIMEOUT (Units) (Note 1) (RoHS COMPLIANT) DWG. #
BAT
ISL9205IRZ DLBA -40 to +85 4.2 Yes Yes Yes - 16 Ld 3x3 QFN L16.3x3B
ISL9205IRZ-T DLBA -40 to +85 4.2 Yes Yes Yes 6k 16 Ld 3x3 QFN L16.3x3B
ISL9205AIRZ DLCA -40 to +85 4.2 Yes No No - 10 Ld 3x3 DFN L10.3x3
ISL9205AIRZ-T DLCA -40 to +85 4.2 Yes No No 6k 10 Ld 3x3 DFN L10.3x3
ISL9205BIRZ DLDA -40 to +85 4.2 Yes No Yes - 10 Ld 3x3 DFN L10.3x3
ISL9205BIRZ-T DLDA -40 to +85 4.2 Yes No Yes 6k 10 Ld 3x3 DFN L10.3x3
ISL9205CIRZ DLEA -40 to +85 4.256 Yes No Yes - 10 Ld 3x3 DFN L10.3x3
ISL9205CIRZ-T DLEA -40 to +85 4.256 Yes No Yes 6k 10 Ld 3x3 DFN L10.3x3
ISL9205DIRZ DLFA -40 to +85 4.2 No Yes Yes - 10 Ld 3x3 DFN L10.3x3
ISL9205DIRZ-T DLFA -40 to +85 4.2 No Yes Yes 6k 10 Ld 3x3 DFN L10.3x3
ISL9205EVAL1Z Evaluation board
ISL9205AEVAL1Z Evaluation board
ISL9205BEVAL1Z Evaluation board
ISL9205CEVAL1Z Evaluation board
ISL9205DEVAL1Z Evaluation board
NOTES:
1. See TB347 for details about reel specifications.
2. 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. 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.
3. For Moisture Sensitivity Level (MSL), see ISL9205, ISL9205A, ISL9205B, ISL9205C, ISL9205D device pages. For more information about MSL, see
TB363.
FN9252 Rev 4.00 Page 2 of 17
Dec 20, 2018