¬
ISL9219R5360
Data Sheet
December 4, 2009
FN6823.1
USB Compliant Li-ion Battery Charger
The ISL9219R5360 is a fully integrated high input voltage
single-cell Li-ion battery charger. These chargers are fully in
compliance with the USB electrical specification. The
chargers perform the CC/CV charge function required by
Li-ion batteries. The chargers accept an input voltage up to
28V but are disabled when the input voltage exceeds the
OVP threshold, to prevent excessive power dissipation. The
28V rating eliminates the overvoltage protection circuit
required in a low input voltage charger.
The fast charge current is programmable with an external
resistor, and the end-of-charge (EOC) current is fixed at
50mA for any input source type. When the input power
source is identified as a USB port, the host controller will
further identify the power type of the port and drive the USBI
pin accordingly.
When the battery voltage is lower than the trickle charge
threshold, which is also programmable with an external
resistor, the charger preconditions the battery with an 85mA
constant current. Charge is complete when the charge current
reduces to the EOC current level during the CV charge phase.
The STAT1 and STAT2 provide unique indication for each
charging condition. An internal thermal foldback function
protects the charger from any thermal failure.
The STAT1 and STAT2 pins are of open drain type, allowing
a simple interface to a microprocessor or an LED. When no
adapter is attached or when disabled, the charger draws less
than 1µA leakage current from the battery.
Additional features include an OVP protected power-good
source, preconditioning of an over-discharged battery, an
NTC thermistor interface for charging the battery in a safe
temperature range, automatic recharge, and thermally
enhanced QFN package.
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
• 0.7% Voltage Accuracy
• Programmable Charge Currents
• 250µA (Typ) Suspend Quiescent Current
• USB 100mA/500mA Charge Current Setting
• Charge Current Thermal Foldback for Thermal Protection
• Trickle Charge for Fully Discharged Batteries
• 28V Maximum Voltage for the Power Input
• Charge Status 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
• Pb-free (RoHS Compliant)
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
• Technical Brief TB379 “Thermal Characterization of
Packaged Semiconductor Devices”
• Technical Brief TB389 “PCB Land Pattern Design and
Surface Mount Guidelines for QFN Packages”
Pinout
ISL9219R5360
(20 LD 3X4 QFN)
TOP VIEW
VOUT
16 VOUT
15 TS
14 PG
13 NC
12 TIMER
11 GND
7
PRECH
8
ISET
9
ACFLT
10
EN
VIN
NC
Ordering Information
PART
NUMBER
ISL9219IRZR5360
PART
MARKING
219
TEMP.
RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
VIN 1
USBI
2
20 19 18 17
-40 to +85 20 Ld 3x4 QFN L20.3x4
-40 to +85 20 Ld 3x4 QFN L20.3x4
AC_IN 3
TRKL 4
STAT1 5
STAT2 6
ISL9219IRZ-TR5360* 219
*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.
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. 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
NC
ISL9219R5360
Absolute Maximum Ratings
Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 30V
Output Pin Voltage (STAT1, STAT2, PG) . . . . . . . . . . . . . -0.3V to 7V
All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 5.5V
Maximum Output Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A
Thermal Information
Thermal Resistance (Junction to Ambient)
θ
JA
(°C/W)
θ
JC
(°C/W)
3x4 QFN Package (Notes 1, 2) . . . .
41
2.5
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
Recommended Operating Conditions
Ambient Temperature Range . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Maximum Supply Voltage, V
IN
. . . . . . . . . . . . . . . . . . . . . . . . . . .28V
Supply Voltage, V
IN
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3V to 6V
Programmable Charge Current . . . . . . . . . . . . . . . . . . . 50mA to 1A
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.
θ
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
θ
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
3. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
Electrical Specifications
Typical values are tested at VIN = 5V and T
A
at +25°C, maximum and minimum values are established over the
Recommended Operating Conditions, unless otherwise noted.
SYMBOL
TEST CONDITIONS
MIN
(Note 3)
TYP
MAX
(Note 3)
UNITS
PARAMETER
POWER-ON RESET
Rising VIN Threshold
Falling VIN Threshold
VIN-BAT OFFSET VOLTAGE
Rising Edge
Falling Edge
AC FAULT DETECTION THRESHOLD
AC Fault Threshold
STANDBY CURRENT
VOUT Pin Sink Current
VIN Pin Supply Current
VIN Pin Supply Current
VOLTAGE REGULATION
Output Voltage
Output Voltage
Dropout Voltage
OVERVOLTAGE PROTECTION
Overvoltage Protection Rising Threshold
Overvoltage Protection Falling Threshold
OUTPUT CURRENT
Constant Charge Current
Output Current Set Voltage
Constant Charge Current
Constant Charge Current
Trickle Charge Current
V
POR
V
POR
V
OS
V
OS
V
ACFLT
I
LEAK
I
STANDBY
I
RUN
V
CH
V
CH
VIN < V
POR
or EN = HI
VOUT floating and EN = HI
VOUT floating and EN = LO
3.4
2.2
3.6
2.4
3.8
2.6
V
V
-
10
90
50
150
-
mV
mV
4.3
4.4
4.5
V
-
-
-
1
250
1
5.0
300
2
µA
µA
mA
T
A
= +25°C, I
OUT
= 100mA
I
OUT
= 100mA
V
OUT
= 4.2V, I
OUT
= 1A
4.185
4.169
-
4.20
4.20
300
4.215
4.231
430
V
V
mV
V
OVPR
V
OVPF
I
CHARGE
V
ISET
I
CHARGE
I
CHARGE
I
TRICKLE
AC input, V
IN
= 5V, V
OUT
= 3.8V
R
ISET
= 24k
AC input, V
IN
= 5V, V
OUT
= 3.8V,
I
OUT
= 1A
USBI = HI, V
IN
= 5V, V
OUT
= 3.8V
USBI = LO, V
IN
= 5V, V
OUT
= 3.8V
For any input type, V
IN
= 5V, V
OUT
= 2V
5.64
5.54
6.0
5.6
6.36
-
V
V
0.9
2.364
380
65
65
1.0
2.4
430
85
85
1.1
2.436
490
95
95
A
V
mA
mA
mA
2
FN6823.1
December 4, 2009
ISL9219R5360
Electrical Specifications
Typical values are tested at VIN = 5V and T
A
at +25°C, maximum and minimum values are established over the
Recommended Operating Conditions, unless otherwise noted.
(Continued)
SYMBOL
I
MIN
V
RECH
V
MIN
V
MIN
V
MIN_HYS
I
TS
V
TMIN
V
TMAX
V
RMV
T
FOLD
G
FOLD
t
OSC
t
DEG
C
TIME
= 15nF
PRECH is floating
RPRECH = 82.5k
TEST CONDITIONS
For any input type, V
IN
= 5V
MIN
(Note 3)
30
TYP
50
MAX
(Note 3)
70
UNITS
mA
PARAMETER
End-of-Charge Threshold
RECHARGE THRESHOLD
Recharge Voltage Threshold
TRICKLE CHARGE THRESHOLD
Trickle Charge Threshold Voltage
Trickle Charge Threshold Voltage
Trickle Charge Threshold Hysteresis
TEMPERATURE MONITORING
Constant Current Source For TS
Low Battery Temperature Threshold
High Battery Temperature Threshold
Battery Removal Threshold
Charge Current Foldback Threshold
Current Foldback Gain
OSCILLATOR
Oscillation Period
DE-GLITCH TIME
De-Glitch Time For EOC, Recharge
LOGIC INPUT AND OUTPUT
Input High (USBI,
EN, AC_IN)
Input Low (USBI,
EN, AC_IN)
Open Drain Leakage Current When HI
(STAT1, STAT2, ACFLT, TRKL)
Open Drain Sink Current When LOW
(STAT1, STAT2, ACFLT, TRKL)
VIN to PG Switch
PMOSFET ON-Resistance
Maximum Output Current
4.05
4.1
4.15
V
2.9
2.375
35
3.0
2.475
60
3.1
2.575
150
V
V
mV
4.8
1.86
0.145
-
-
-
5.0
1.88
0.16
2.25
125
100
5.3
1.91
0.175
-
-
-
µA
V
V
V
°C
mA
/
°C
2.5
3.0
3.3
ms
40
100
170
ms
1.4
-
Pin Voltage = 6V
Pin Voltage = 0.3V
-
20
-
-
-
-
-
0.4
1
-
V
V
µA
mA
r
DS(ON)
I
PG
-
-
3
60
5
-
Ω
mA
Pin Descriptions
VIN (Pin 1, 20)
Input supply voltage, Connect a 1µF ceramic capacitor to
power ground.
AC_IN (Pin 3)
Input source type configuration pin. Pull this pin to logic HI to
configure the charger for an AC adapter. If this pin is left
floating or driven to logic LO, the charger is configured for
USB source type, where the charge current is set at 430mA
or 85mA, depending on the USBI status. There is a 600k
pull-down resistor between the AC_IN pin to GND.
USBI (Pin 2)
USB power type selection logic input. When this pin is left
floating or driven to logic LOW, the USB port is regarded as
a low-power port with 100mA maximum output current. In
such cases, the charge current is internally set to 85mA.
When this pin is driven to logic HIGH, the USB port is
considered a high-power port with a 500mA maximum
current available. In such cases, the charge current is set at
430mA regardless of the ISET resistor. There is a 600k
pull-down resistor between the USBI pin to GND.
TRKL (Pin 4)
Open-drain indication pin which turns on when charger is in
trickle mode, otherwise turns off. This pin is capable to sink
20mA minimum current to drive an LED.
STAT1 (Pin 5)
Open-drain indication pin. In conjunction with STAT2 this pin
provides a unique indication for each charging state of the
3
FN6823.1
December 4, 2009
ISL9219R5360
cycle. This pin is capable to sink 20mA minimum current to
drive an LED.
LED. The open drain indication also turns off when an input
OVP condition (VIN > 6V) is encountered.
STAT2 (Pin 6)
Open-drain indication pin. In conjunction with STAT1 this pin
provides a unique indication for each charging state of the
cycle. This pin is capable to sink 20mA minimum current to
drive an LED.
EN (Pin 10)
IC enable input. Drive this pin to logic LO or leave it floating
to enable the charger. Drive this pin to logic HI to disable the
charger. There is a 600k pull-down resistor between the EN
pin to GND.
PRECHG (Pin 7)
Trickle charge threshold voltage programming input pin.
Connect a resistor between this pin and GND to set the
threshold voltage by Equation 1:
3
×
R
TRKLV
-
V
TRKLV
= -------------------------------
100
(
V
)
(EQ. 1)
PG (Pin 14)
The PG pin is a bypass switch that connects to VIN through
an internal P-Channel MOSFET when VIN is within the
power-good window. Otherwise the PG pin is in a high
impedance (floating) state. When VIN is within the
power-good window, the PG pin can source up to 60mA
output current for the down stream circuit. It is
recommended that a 2.2µF ceramic capacitor be connected
at the PG pin to absorb any transient voltage due to the
delay turning off the PMOS under a fast OVP condition.
Where R
TRKLV
is in kΩ, valid for R
TRKLV
≤
100kΩ.
ISET (Pin 8)
Charge-current programing and monitoring pin. Connect a
resistor between this pin and the GND pin to set the charge
current limit by Equation 2:
24000
-
I
OUT
= ----------------
R
ISET
(
mA
)
(EQ. 2)
TS (Pin 15)
Input
for an external NTC thermistor for temperature
monitoring. A 5µA internal current source is provided at this
pin and the pin voltage is monitored and compared with the
set thresholds to provide over temperature protection.
Where R
ISET
is in kΩ.
The ISET pin voltage also monitors the actual charge current
during the entire charge cycle, including the trickle,
constant-current, and constant-voltage phases. However,
when the dropout voltage is reached, the ISET pin voltage
will no longer follow the output current due to fact that the
output current is no longer controlled by the IC. When
disabled, VISET = 0V.
When monitoring the charging current at USB input, to
achieve the best accuracy of current monitoring, a one-point
calibration is recommended determine a calibration factor K.
The procedure is described in Equation 3:
I
OUTM
×
V
ISET
I
OUT
–
calibrated
= -----------------------------------------
V
ISETM
(EQ. 3)
TIMER (Pin 12)
The TIMER pin sets the oscillation period by connecting a
timing capacitor between this pin and GND. The oscillator
also provides a time reference for the charger. The timer
function can be disabled by connecting the TIMER pin to
GND. If the timer is disabled, there will be no timeout
function for any operation mode including trickle charge and
fast charge modes.
VOUT (Pin 16, 17)
Charger output pin. Connect this pin to the battery. A 1µF or
larger X5R ceramic capacitor is recommended for
decoupling and stability purposes.
GND (Pins 11)
System ground connection
Where I
OUTM
is the applied known current for the calibration
and V
ISETM
is the resulting voltage measured at the VISET
pin with a given RISET. Applying this procedure at each
system during the manufacturing process can result in the
best accuracy. However if it is too difficult to implement the
procedure during the manufacturing process, using an
average value for I
OUTM
/V
ISETM
through characterizing
some parts at a reasonably large sample size can also
achieve good accuracy.
NC (Pins 13, 18, 19)
No connect pins.
EPAD
Exposed pad. Connect to GND electrically. Thermally,
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.
ACFLT (pin 9)
Open-drain indication pin which turns off when
the adapter
plugged in does not have sufficient current rating and
the resulting input voltage is dropped to below 4.4V.
This pin is capable to sink 20mA minimum current to drive an
4
FN6823.1
December 4, 2009
ISL9219R5360
Typical Application
TO INPUT SO URCE
VIN
C
1
R
1
VO UT
R
2
R
3
D
2
R
4
D
3
TO BATT
R
5
C
2
*
EN
USBI
AC_IN
PRECG
ISL9219R5360
D
1
ACFLT
STAT1
STAT2
TRKL
PG
G ND
TS
D
4
DIS
EN
500MA
100MA
AC
AC/USB
R
6
TIMER
ISET
TO DO W N STREAM
CIRCUIT
R
7
C
T
R
T
*
SEE INPUT AND O UTPUT CAPACITO R SELECTIO N
5
FN6823.1
December 4, 2009
