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ISL9222AIRTZ-T

P1-P3P4-P6P7-P8
1
FN6704.0
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 LLC.
Copyright Intersil Americas LLC. 2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL9222A
High Input Voltage Charger
The ISL9222A is a cost-effective, fully integrated high input
voltage single-cell Li-ion battery charger. The charger uses a
CC/CV charge profile required by Li-ion batteries. The
charger accepts an input voltage up to 28V but is disabled
when the input voltage exceeds the OVP threshold, typically
7.2V, to prevent excessive power dissipation. The 28V rating
eliminates the overvoltage protection circuit required in a low
input voltage charger.
The charge current is user programmable with an external
resistor. When the battery voltage is lower than typically
2.55V, the charger preconditions the battery with typically
20% of the programmed charge current. An internal thermal
foldback function protects the charger from any thermal
failure.
AN indication pin PPR
allows simple interface to a
microprocessor or LED. When no adapter is attached or
when disabled, the charger draws less than 1µA leakage
current from the battery.
Features
• Complete Charger for Single-Cell Li-ion/Polymer Batteries
• Integrated Pass Element and Current Sensor
• No External Blocking Diode Required
• Low Component Count and Cost
• 1% Voltage Accuracy
• Programmable Charge Current
• Charge Current Thermal Foldback for Thermal
Protection
• Trickle Charge for Fully Discharged Batteries
• 28V Maximum Voltage for the Power Input
• Power Presence Indication
• Less Than 1µA Leakage Current off the Battery When No
Input Power Attached or Charger Disabled
• Ambient Temperature Range: -40°C to +85°C
• 8 Ld 2x3 TDFN Package
• Auxiliary OR-gate For System Booting Logic
• Pb-Free (RoHS Compliant)
Applications
• Mobile Phones
• Blue-Tooth Devices
•PDAs
•MP3 Players
• Stand-Alone Chargers
• Other Handheld Devices
Pinout
ISL9222A
(8 LD TDFN)
TOP VIEW
Ordering Information
PART
NUMBER
(Note)
PART
MARKING
TEMP.
RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL9222AIRTZ-T 22A -40 to +85 8 Ld 2x3 TDFN
Tape and Reel
L8.2x3A
*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.
2
3
4
1
7
6
5
8
VIN
PPR
JIGON
EN
BAT
IREF
JIGIN
GND
Data Sheet July 28, 2008
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2
FN6704.0
July 28, 2008
Absolute Maximum Ratings (Reference to GND) Thermal Information
VIN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 30V
JIGIN, IREF, BAT, JIGON, EN
, PPR . . . . . . . . . . . . . . . . -0.3V to 7V
Recommended Operating Conditions
Ambient Temperature Range . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Maximum Supply Voltage (VIN Pin). . . . . . . . . . . . . . . . . . . . . . 28V
Operating Supply Voltage (VIN Pin). . . . . . . . . . . . . . . . 4.5V to 6.5V
Programmed Charge Current . . . . . . . . . . . . . . . . 100mA to 900mA
Thermal Resistance
JA
(°C/W)
JC
(°C/W)
TDFN Package (Notes 1, 2). . . . . . . . . 59 4.5
Maximum Junction Temperature (Plastic Package) . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTES:
1.
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
2. For
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications Typical values are tested at V
IN
= 5V and the ambient temperature at +25°C. All maximum and minimum
values are established under the recommended operating supply voltage range and ambient temperature
range, unless otherwise noted.
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS
POWER-ON RESET
Rising POR Threshold V
POR
VBAT = 3.0V, use PPR to indicate the
comparator output.
3.5 3.9 4.4 V
Falling POR Threshold V
POR
2.8 3.4 3.50 V
VIN-BAT OFFSET VOLTAGE
Rising Edge V
OS
Monitor output current to indicate the
comparator output. (Note 3)
- 90 150 mV
Falling Edge V
OS
10 50 - mV
OVERVOLTAGE PROTECTION
Overvoltage Protection Threshold V
OVP
Use PPR to indicate the comparator output.
(Note 4)
6.9 7.2 7.5 V
OVP Threshold Hysteresis 100 240 400 mV
STANDBY CURRENT
BAT Pin Sink Current I
STANDBY
VIN floating - - 1.0 µA
VIN Pin Supply Current I
VIN
Charger disabled - 350 600 µA
VIN Pin Supply Current I
VIN
Charger enabled - 500 800 µA
VOLTAGE REGULATION
Output Voltage V
CH
4.3V < V
IN
< 6.5V, charge current = 20mA 4.158 4.20 4.242 V
PMOS ON-Resistance r
DS(ON)
V
BAT
= 3.8V, charge current = 0.5A - 0.6 -
CHARGE CURRENT (Note 5)
IREF Pin Output Voltage I
IREF
V
BAT
= 3.8V 1.18 1.22 1.26 V
Constant Charge Current I
CHG
R
IREF
= 24.3k, V
BAT
= 2.8V - 4.0V 440 500 550 mA
Trickle Charge Current I
TRK
R
IREF
= 24.3k, V
BAT
= 2.4V 70 95 130 mA
PRECONDITIONING CHARGE THRESHOLD
Preconditioning Charge Threshold Voltage V
MIN
2.45 2.55 2.65 V
Preconditioning Voltage Hysteresis V
MINHYS
- 250 - mV
INTERNAL TEMPERATURE MONITORING
Charge Current Foldback Threshold T
FOLD
-115- °C
ISL9222A
3
FN6704.0
July 28, 2008
Pin Descriptions
VIN - Power input. The absolute maximum input voltage is
28V. A 1µF or larger value X5R ceramic capacitor is
recommended to be placed very close to the input pin for
decoupling purpose. Additional capacitance may be required
to provide a stable input voltage.
PPR
- Open-drain power presence indication. The
open-drain MOSFET turns on when the input voltage is
above the POR threshold but below the OVP threshold and
off otherwise. This pin is capable to sink 10mA (minimum)
current to drive an LED. The maximum voltage rating for this
pin is 7V. This pin is independent on the EN-pin input.
JIGON - Output pin of the auxiliary 2-input OR gate. One of
the inputs is internal and is connected to the inverted PPR
logic. The other input is from the JIGIN pin driven externally
to provide system booting enable signal.
EN
- Enable input. This is a logic input pin to disable or
enable the charger. Drive to HIGH to disable the charger.
When this pin is driven to LOW or left floating, the charger is
enabled. This pin has an internal 200k pull-down resistor.
GND - System ground.
JIGIN - One of the inputs of the 2-input auxiliary OR gate.
There is a 240k pull down resistor at this pin.
IREF - Charge-current program and monitoring pin. Connect
a resistor between this pin and the GND pin to set the
charge current limit determined by Equation 1:
Where R
IREF
is in k. The IREF pin voltage also monitors
the actual charge current during the entire charge cycle,
including the trickle, constant-current, and constant-voltage
phases. When disabled, VIREF = 0V.
BAT - Charger output pin. Connect this pin to the battery. A
1µF or larger X5R ceramic capacitor is recommended for
decoupling and stability purposes. When the EN pin is pulled
to logic HIGH, the BAT output is disabled.
EPAD - Exposed pad. Connect as much copper as possible
to this pad either on the component layer or other layers
through thermal vias to enhance the thermal performance.
LOGIC INPUT AND OUTPUTS
EN
Pin Logic Input High
VIH
1.3 - - V
EN
Pin Logic Input Low
VIL
--0.5V
EN
Pin Internal Pull-Down Resistance 100 200 400 k
PPR
Sink Current when LOW Pin Voltage = 1V 10 20 - mA
PPR
Leakage Current When HIGH V
PPR
= 6.5V - - 1 µA
AUXILIARY OR GATE
Supply Voltage V
S
2.5 - 5.0 V
JIGON High Level Output Voltage VOH
I
JIGON(SOURCE)
= -60A, 2.5V < VBAT < 5.0V
VBAT -
0.1V
--V
I
JIGON(SOURCE)
= -1mA, 3.0V < VBAT < 5.0V
VBAT-
0.45V
--V
JIGON Out Put Low Voltage VOL I
JIGON(SINK)
= 1mA - - 0.1 V
JIGIN Pin Logic Input High VIH VBAT = 2.5V 2.1 - - V
3.0V < VBAT < 5.0V
0.75 x
VBAT
--V
JIGIN Pin Logic Input Low VIL VBAT = 2.5V - - 0.4 V
3.0V < VBAT < 5.0V
- - 0.25x
VBAT
V
JIGIN Pin Internal Pull-Down Resistance 100 240 400 k
NOTES:
3. The output is used to test the VOS threshold. The output current will toggle between 0 and the CC current when VOS crosses over the threshold.
4. For junction temperature below +100°C.
5. The charge current can be affected by the thermal foldback function if the IC under the test setup cannot dissipate the heat.
Electrical Specifications Typical values are tested at V
IN
= 5V and the ambient temperature at +25°C. All maximum and minimum
values are established under the recommended operating supply voltage range and ambient temperature
range, unless otherwise noted. (Continued)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS
I
REF
12089
R
IREF
-----------------
mA=
(EQ. 1)
ISL9222A
P1-P3P4-P6P7-P8

ISL9222AIRTZ-T

Mfr. #:
Buy ISL9222AIRTZ-T
Manufacturer:
Renesas / Intersil
Description:
Battery Management HI INPUT LI-ION CHRG W/LOGIC OR GATE 8LD
Lifecycle:
New from this manufacturer.
Delivery:
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