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AR3PJHM3/86A

P1-P3P4-P6P7-P8
1
FN6821.2
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. 2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL6294A
High Input Voltage Charger
The ISL6294A 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
7.3V, to prevent excessive power dissipation. The 28V rating
eliminates the overvoltage protection circuit required in a low
input voltage charger.
The charge current and the end-of-charge (EOC) current are
programmable with external resistors. When the battery
voltage is lower than typically 2.55V, the charger
preconditions the battery with typically 20% of the
programmed charge current. When the charge current
reduces to the programmable EOC current level during the
CV charge phase, an EOC indication is provided by the CHG
pin, which is an open-drain output. An internal thermal
foldback function protects the charger from any thermal
failure.
Two indication pins (PPR
and CHG) allow simple interface to
a microprocessor or LEDs. 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
• Programmable End-of-Charge Current
• Charge Current Thermal Foldback for Thermal
Protection
• Trickle Charge for Fully Discharged Batteries
• 28V Maximum Voltage for the Power Input
• Power Presence and Charge Indications
• 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 DFN Package
• Pb-Free (RoHS Compliant)
Applications
• Mobile Phones
• Blue-Tooth Devices
•PDAs
•MP3 Players
• Stand-Alone Chargers
• Other Handheld Devices
Pinout
ISL6294A
(8 LD DFN)
TOP VIEW
Ordering Information
PART
NUMBER
(Note)
PART
MARKING
TEMP.
RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL6294AIRZ-T* 94A -40 to +85 8 Ld 2x3 DFN L8.2x3
*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
CHG
EN
BAT
IREF
IMIN
GND
Data Sheet December 11, 2008
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2
FN6821.2
December 11, 2008
Absolute Maximum Ratings (Reference to GND) Thermal Information
VIN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 30V
IMIN, IREF, BAT, CHG
, 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)
DFN 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 T
A
at +25°C.
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.
3.3 3.9 4.3 V
Falling POR Threshold V
POR
2.7 3.4 3.6 V
VIN-BAT OFFSET VOLTAGE
Rising Edge V
OS
V
BAT
= 4.0V, use CHG pin to indicate the
comparator output (Note 3)
- 90 150 mV
Falling Edge V
OS
10 50 - mV
OVERVOLTAGE PROTECTION
Overvoltage Protection Threshold V
OVP
(Note 4)
Use PPR
to indicate the comparator output
6.9 7.3 7.7 V
OVP Threshold Hysteresis 100 240 400 mV
STANDBY CURRENT
BAT Pin Sink Current I
STANDBY
Charger disabled or the input is floating
V
BAT
=4.2V
--1.0µA
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
Charge current = 20mA 4.158 4.20 4.242 V
PMOS ON-Resistance r
DS(ON)
V
IN
= 4.1V, charge current = 0.3A - 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
V
IN
= 5V, R
IREF
= 24.3k, V
BAT
= 2.8V to 4.0V 450 500 550 mA
Trickle Charge Current I
TRK
V
IN
= 5V, R
IREF
= 24.3k, V
BAT
= 2.4V 70 95 130 mA
End-of-Charge Current I
MIN
V
IN
= 5V, R
IMIN
= 243k 33 45 57 mA
EOC Rising Threshold V
IN
= 5V, R
IMIN
= 243k 325 380 415 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
(Note 6)
T
FOLD
100 115 130 °C
ISL6294A
3
FN6821.2
December 11, 2008
Pin Descriptions
VIN - Power input. The absolute maximum input voltage is
28V. A 0.47µF 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 of the EN
pin input.
CHG - Open-drain charge indication pin. This pin outputs a
logic LOW when a charge cycle starts and turns to HIGH
when the end-of-charge (EOC) condition is qualified. This
pin is capable to sink 10mA minimum current to drive an
LED. When the charger is disabled, the CHG
outputs high
impedance.
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.
IMIN - End-of-charge (EOC) current program pin. Connect a
resistor between this pin and the GND pin to set the EOC
current. The EOC current IMIN can be programmed by
Equation 1:
Where R
IMIN
is in k. The programmable range covers 5%
(or 10mA, whichever is higher) to 50% of IREF. When
programmed to less than 5% or 10mA, the stability is not
guaranteed.
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 2:
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, V
IREF
= 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 as possible copper
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 1.3 - - V
EN
Pin Logic Input Low --0.5V
EN
Pin Internal Pull-Down Resistance 100 200 400 k
CHG
Sink Current when LOW Pin Voltage = 1V 10 20 - mA
CHG
Leakage Current when HIGH V
CHG
= 6.5V - - 1 µA
PPR
Sink Current when LOW Pin Voltage = 1V 10 20 - mA
PPR
Leakage Current when HIGH V
PPR
6 = 6.5V - - 1 µA
NOTES:
3. The 4.0V V
BAT
is selected so that the CHG output can be used as the indication for the offset comparator output indication. If the V
BAT
is lower
than the POR threshold, no output pin can be used for indication.
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.
6. Limits should be considered typical and are not production tested.
Electrical Specifications Typical Values Are Tested at V
IN
= 5V and the T
A
at +25°C. (Continued)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS
I
MIN
11000
R
IMIN
----------------
=
(EQ. 1)
mA
I
REF
12089
R
IREF
-----------------
=
(EQ. 2)
mA
ISL6294A
P1-P3P4-P6P7-P8

AR3PJHM3/86A

Mfr. #:
Buy AR3PJHM3/86A
Manufacturer:
Vishay
Description:
Rectifiers 3A 600V
Lifecycle:
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