DATASHEET

ISL9228
®
Data Sheet
February 13, 2009
FN6687.0
Dual Input Li-ion/Li-Polymer Battery
Charger With Battery Removal Detection
Features
The ISL9228 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 ISL9228 is an ideal
charger for smart handheld devices that need to
communicate with a personal computer via USB.
• Dual Input Power Sources for Cradle and USB
The ISL9228 features 28V maximum voltages for both the
cradle and the USB inputs. Due to the 28V rated inputs, lowcost, large output tolerance adapters can be used safely.
The 28V rating eliminates the over voltage protection circuit
required in a low input voltage charger.
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 turn to logic high to
indicate the end-of-charge condition.
ISL9228IRZ
PART
MARKING
TEMP.
RANGE
(°C)
• 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
• 1% Constant Voltage Accuracy
• 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
• Pb-Free (RoHS Compliant)
Applications
• Smart Handheld Devices
• Cell Phones, PDAs, MP3 Players
• Digital Still Cameras
Related Literature
PACKAGE
(Pb-free)
PKG.
DWG. #
9228
-40 to +85
10 Ld 3x3 DFN L10.3x3C
ISL9228IRZ-T 9228
-40 to +85
10 Ld 3x3 DFN L10.3x3C
Tape and Reel
NOTE: Intersil 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. 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
• Battery Removal Detection
• Handheld Test Equipment
Ordering Information
PART
NUMBER
(Note)
• Complete Charger for Single-Cell Li-ion/Polymer Batteries
• 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
ISL9228
(10 LD DFN)
TOP VIEW
CRDL
1
10 BAT
USB
2
9
ICDL
PPR
3
8
GND
CHG
4
7
VF
EN
5
6
IMIN
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. Thermaguard is a trademark of Intersil Americas Inc.
All other trademarks mentioned are the property of their respective owners.
ISL9228
Block Diagram
CRDL
BAT
OVP
SHUTDOWN
USB
CA
+
SHUTDOWN
CPPR
TEMP
MONITOR
+
VA
VREF
REFERENCE
CURRENT
CONTROL
ICDL
IMIN
CPPR
LBAT
IR
USB
CRDL BAT
EN
PPR
EN
PPR
GND
CONTROL
CHG
VCC
CHG
1000k
VF
SHUTDOWN
2
FN6687.0
February 13, 2009
ISL9228
Typical Applications
TO AC ADAPTER
BAT
CRDL
RICDL
C1
ICDL
C3
R3
R1
TO USB
CONNECTOR
EN
ISL9228
USB
C2
BATT
R4
DISABLE
+
ENABLE
PPR
CHG
R2
D1
D2
RF
VF
RIMIN
GND
IMIN
COMPONENT SELECTION
RICDL
12.4kΩ for 0.55A cradle charge current
RIMIN
10kΩ for 55mA end-of-charge current
R3, R4
350Ω
RF
C1, C2, C3
3
ID Resistor, typically 20kΩ
1µF ceramic capacitor
R1, R2
1Ω
D1, D2
LEDs
FN6687.0
February 13, 2009
ISL9228
Absolute Maximum Ratings
Thermal Information
Supply Voltage (CRDL, USB) . . . . . . . . . . . . . . . . . . . . -0.3V to 28V
Other Input Voltage (EN, VF, ICDL, IMIN, BAT). . . . . . . . -0.3V to 7V
Open-Drain Pull-Up Voltage (PPR, CHG) . . . . . . . . . . . . -0.3V to 7V
Thermal Resistance
θJA (°C/W)
θJC (°C/W)
DFN Package (Notes 1, 2) . . . . . . . . . .
40
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
Supply Voltage
USB Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3V to 5.5V
CRDL Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3V to 24V
Typical Cradle Charge Current . . . . . . . . . . . . . . . . . . 100mA to 1A
Typical USB Charge Current . . . . . . . . . . . . . . . . . . . . . . . . . 380mA
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. θJA 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 theta θJC the "case temp." location is the center of the exposed metal pad on the package underside.
Electrical Specifications
Typical Values Are Tested at USB = CRDL = 5V and ambient temperature is at +25°C, Unless Otherwise Noted.
All Maximum and Minimum Values Are Guaranteed Under the Recommended Operating Conditions
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Rising USB/CRDL Threshold
3.4
3.9
4.2
V
Falling USB/CRDL Threshold
2.7
3.2
3.5
V
-
150
250
mV
20
80
-
mV
-
0.05
0.5
μA
-
150
220
μA
-
150
220
μA
-
0.55
0.8
mA
POWER-ON RESET
VIN-BAT OFFSET VOLTAGE
Rising Edge
VOS
Falling Edge
VOS
VBAT = 4.0V, use CHG pin with output current
to indicate the comparator output (Note 3)
STANDBY CURRENT
BAT Pin Sink Current
ISTANDBY EN = HIGH or both inputs are floating
CRDL Pin Supply Current
ICRDL
USB Pin Supply Current
EN = HIGH
IUSB
EN = LOW or floating
CRDL/USB Pin Supply Current
VOLTAGE REGULATION
Output Voltage
VCH
Load = 10mA
4.158
4.2
4.242
V
Output Voltage
VCH
Load = 10mA (TJ = +25°C)
4.174
4.2
4.226
V
CRDL PMOS On-Resistance
VBAT = 3.8V, ICHARGER = 0.3A, (TJ = +25°C)
200
600
850
mΩ
USB PMOS On-Resistance
VBAT = 3.8V, ICHARGER = 0.3A, (TJ = +25°C)
200
600
850
mΩ
VBAT = 3.8V
1.19
1.22
1.25
V
CHARGE CURRENT (Note 4)
ICDL Pin Output Voltage
VICDL
CRDL Input Constant Charge Current
ICHARGE RICDL = 12.4kΩ, VBAT: 2.7V to 3.8V
520
550
580
mA
CRDL Input Trickle Charge Current
ITRICKLE
RICDL = 12.4kΩ, VBAT = 2.2V
Given as a % of the CRDL ICHARGE
16
18
20
%
46.5
55
63.5
mA
CRDL and USB End-of-Charge Threshold
IMIN
RIMIN = 10.0kΩ
USB Input Constant Charge Current
ICHARGE VBAT: 2.7V to 3.8V
332
380
410
mA
USB Input Trickle Charge Current
ITRICKLE
66
80
91
mA
4
VBAT = 2.2V
FN6687.0
February 13, 2009
ISL9228
Electrical Specifications
Typical Values Are Tested at USB = CRDL = 5V and ambient temperature is at +25°C, Unless Otherwise Noted.
All Maximum and Minimum Values Are Guaranteed Under the Recommended Operating Conditions (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
VMIN
2.5
2.6
2.7
V
VRCH
3.8
3.9
4.0
V
100
-
-
kΩ
700
1000
1300
kΩ
TFOLD
-
125
-
°C
EN and VF Pins Logic Input High
VIH
1.3
-
-
V
EN and VF Pins Logic Input Low
VIL
-
-
0.4
V
350
600
850
kΩ
10
-
-
mA
PRECONDITIONING CHARGE THRESHOLD
Preconditioning Charge Threshold Voltage
RECHARGE THRESHOLD
Recharge Threshold Voltage
BATTERY REMOVAL DETECTION
Maximum External Resistor
RID
VIL = 0.4V
VF Pin Internal Pull Up Resistance
INTERNAL TEMPERATURE MONITORING
Current Foldback Threshold
LOGIC INPUT AND OUTPUT
EN Pin Internal Pull Down Resistance
CHG/PPR Sink Current
Pin Voltage = 0.8V
NOTES:
3. The 4.0V VBAT is selected so that the CHG output can be used as the indication for the offset comparator output indication. If the VBAT is lower
than the POR threshold, no output pin can be used for indication.
4. The charge current can be affected by the thermal foldback function if the IC under the test setup cannot dissipate the heat.
Typical Operating Performance The test conditions for the Typical Operating Performance are: VIN = 5V, TA = +25°C,
RICDL = 12.4kΩ, RIMIN = 10.0kΩ, VBAT = 3.7V unless Otherwise Noted.
4.2100
4.200
4.2075
CRDL
4.2050
VBAT (V)
VBAT (V)
4.180
4.160
USB
4.140
CHARGE CURRENT = 1mA
4.2025
CRDL
4.2000
USB
4.1975
CHARGE CURRENT = 1mA
4.1950
4.120
4.1925
4.100
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
100
120
140
FIGURE 1. CHARGER OUTPUT VOLTAGE vs TEMPERATURE
5
4.1900
0
5
10
15
20
25
VIN (V)
FIGURE 2. CHARGER OUTPUT VOLTAGE vs INPUT VOLTAGE
FN6687.0
February 13, 2009
ISL9228
Typical Operating Performance The test conditions for the Typical Operating Performance are: VIN = 5V, TA = +25°C,
RICDL = 12.4kΩ, RIMIN = 10.0kΩ, VBAT = 3.7V unless Otherwise Noted. (Continued)
600
600
550
CRDL, RICDL = 12.4k
CHARGE CURRENT (mA)
CHARGE CURRENT (mA)
550
500
450
400
USB
350
300
250
2.8
3.0
3.3
VBAT (V)
3.5
3.8
400
350
1.8
1.8
1.6
1.6
LEAKAGE CURRENT (μA)
2.0
1.4
1.2
CRDL
1.0
0.8
0.6
USB
-20
0
20
40
60
TEMPERATURE (°C)
80
120
140
1.2
1.0
VBAT = 4.2V
0.8
0.6
0.4
600
QUIESCENT CURRENT (µA)
600
CRDL
400
IOUT = 0mA
USB
200
100
-20
0
20
40
60
80
100
120
TEMPERATURE (°C)
FIGURE 7. CRADLE INPUT QUIESCENT CURRENT vs
TEMPERATURE
6
0
20
40
60
80
100
120
140
FIGURE 6. REVERSE CURRENT vs TEMPERATURE
700
500
-20
TEMPERATURE (°C)
700
0
-40
20
40
60
80
100
TEMPERATURE (°C)
1.4
0
-40
100
FIGURE 5. rDS(ON) vs TEMPERATURE AT 3.7V OUTPUT
300
0
0.2
0.2
0
-40
-20
FIGURE 4. CHARGE CURRENT vs AMBIENT TEMPERATURE
2.0
0.4
USB
300
200
-40
4.0
FIGURE 3. CHARGE CURRENT vs OUTPUT VOLTAGE
rDS(ON) (Ω)
450
250
200
2.5
QUIESCENT CURRENT (µA)
CRDL, RICDL = 12.4k
500
140
500
CRDL
400
300
IOUT = 0mA
200
USB
100
0
-40
-20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
FIGURE 8. USB INPUT QUIESCENT CURRENT vs
TEMPERATURE
FN6687.0
February 13, 2009
ISL9228
Typical Operating Performance The test conditions for the Typical Operating Performance are: VIN = 5V, TA = +25°C,
800
800
700
700
QUIESCENT CURRENT (µA)
QUIESCENT CURRENT (µA)
RICDL = 12.4kΩ, RIMIN = 10.0kΩ, VBAT = 3.7V unless Otherwise Noted. (Continued)
600
ENABLED
500
IOUT = 0mA
400
300
200
DISABLED
600
ENABLED
500
IOUT = 0mA
400
300
200
DISABLED
100
100
0
0
0
5
10
15
20
25
0
FIGURE 9. CRADLE INPUT QUIESCENT CURRENT vs INPUT
VOLTAGE
5
10
15
20
25
TEMPERATURE (°C)
TEMPERATURE (°C)
FIGURE 10. USB INPUT QUIESCENT CURRENT vs INPUT
VOLTAGE
Functional Pin Description
CRDL (Pin 1)
EN (Pin 5)
Cradle input. This pin is usually connected to a cradle power
input. The maximum input voltage is 28V. The charge
current from this pin is programmable with the ICDL pin up to
1A. When this pin is connected to a power source, no charge
current is drawn from the USB pin. A 1µF or larger value
ceramic capacitor is recommended for decoupling.
Enable logic input. Connect to LOW or leave floating to
enable the charger.
USB (Pin 2)
550
I MIN = ---------------R IMIN
USB input. This pin is usually connected to a USB port
power connector. Other sources that are also acceptable.
The charge current from the USB pin is fixed at typically
380mA. A 1µF or larger value ceramic capacitor is
recommended for decoupling. It is also recommended to
have a 1Ω resistor in series with the decoupling capacitor to
prevent an over-shoot voltage when a USB cable is plugged
in.
PPR (Pin 3)
Power presence indication. An open-drain output pin which
turns ON when either the USB input voltage or the CRDL
input voltage is within the power good range (refer to the
Description section for definition of power good condition),
regardless if the charger is enabled or disabled. Otherwise
turns OFF. This pin provides a wake-up signal to a
microprocessor when either the cradle or the USB power is
connected.
CHG (Pin 4)
Charge indication pin. An open-drain output which turns ON
when the charge current is above programmable threshold.
Otherwise turns OFF.
IMIN (Pin 6)
IMIN is the programmable input for the end-of-charge
current. IMIN is calculated by Equation 1:
(EQ. 1)
Where RIMIN is in kΩ. IMIN is applicable for both cradle and
USB charging.
VF (Pin 7)
VF is an input pin for the battery ID resistor connection. This
pin has an internal 1000kΩ pull-up resistor. Thus a typical
20kΩ ID resistor will pull this pin to logic low state, indicating
a valid battery connection. If the battery is removed, the VF
pin will be pulled to a logic high state by the internal resistor,
the charger will be disabled as a result, regardless of the
status of the EN pin. The maximum ID resistor is 100kΩ.
GND (Pin 8)
System ground.
ICDL (Pin 9)
The ICDL pin has two functions. The first function is to
program the cradle charge current during the constantcurrent mode. The voltage of this pin is 1.22V during the
constant-current mode of the cradle charger. The constantcurrent mode current is programmed by Equation 2:
6820
I CDL = ----------------R ICDL
7
( mA )
( mA )
(EQ. 2)
FN6687.0
February 13, 2009
ISL9228
where RICDL is the resistor in kΩ, connected to the ICDL pin
(see the Typical Application).
the rDS(ON) becomes a limiting factor of the charge current;
and the charger drops out the constant current regulation.
It is recommended that the charge current be programmed
in the range of 100mA to 1000mA.
Cradle Charge Current
The cradle charge current should be programmed equal or
higher than the USB current; otherwise, the ICDL pin voltage
will be higher than 1.22V during the constant current mode
when the USB charger is working. The charger still works
properly but the accuracy of the current monitoring voltage
degrades and saturates at approximately 2.1V.
The cradle charge current is programmed with the external
resistor connected between the ICDL pin and the GND pin.
The current can be calculated with Equation 2 in “ICDL (Pin
9)” on page 7. The typical rDS(ON) of the P-channel
MOSFET for the CRDL input is 600mΩ at room temperature.
When the head room between the input and output voltages
is small, the actual charge current, similar to the USB case,
could be limited by the rDS(ON). On the other hand, if the
head room between the input and output voltages is large,
the charge current may be limited by the thermal foldback
threshold.
BAT (Pin 10)
Floating Charge Voltage
Charger output pin. Connect this pin to the battery pack or
the battery cell. A 1µF or larger value ceramic capacitor is
recommended for decoupling. The charger relies on the
battery for stability so a battery should always be connected
to the BAT pin.
The floating voltage during the constant voltage phase is
4.2V. The floating voltage has an 1% accuracy over the
ambient temperature range of -40°C to +85°C.
The second function of the ICDL pin is to monitor the actual
charge current. The voltage of this pin, VICDL, is proportional
to the actual charge current, ICHG.
Description
The ISL9228 is designed for a single-cell Li-ion or Li-polymer
battery charging circuit that accepts both a USB port and a
desktop cradle as its power source. While the charge current
from the USB input source is fixed at 380mA, the charge
current from the cradle input is programmable between 0.1A
and 1.0A by the resistor RICDL. Similarly, the end-of-charge
current is programmable by connecting a resistor at the IMIN
pin. The end-of-charge threshold can be calculated with
Equation 1 in “Functional Pin Description” on page 7. The
same threshold applies to both the cradle and the USB inputs.
Input Auto Selection
When both input sources are present, the charger selects
only one power source to charge the battery. When the
CRDL input is higher than the POR threshold, CRDL is
selected as the power source. Otherwise the USB input is
selected. If the CRDL input voltage is below the battery
voltage but the USB input voltage is higher than the battery
voltage, then the USB input is used to charge the battery.
The control circuit always breaks both internal power
devices before switching from one power source to the other
to avoid a cross conduction of both power MOSFETs.
Trickle Charge Current
When the battery voltage is below the minimum battery
voltage VMIN given in the electrical specification, the charger
operates in a trickle/preconditioning mode, where the charge
current is typically 18% of the programmed charge current
for the cradle input. If power comes from the USB input, the
trickle current is approximately 80mA.
End-Of-Charge Indication
When an EOC condition (charge current falls below IMIN
during constant voltage charge) is encountered, the CHG pin
internal open-drain MOSFET turns off. The IMIN threshold is
programmable by the resistor at the IMIN pin for both cradle
and USB inputs. Once the EOC condition is reached, the
status is latched and can be reset at one of the following
conditions:
1. The part is disabled and re-enabled
2. The selected input source has been removed and reapplied
3. The BAT pin voltage falls below the recharge threshold
(~3.9V)
USB Charge Current
When the USB port is selected as the power source, the
charge current enabled by the logic input at the EN pin.
When the EN is driven to logic LOW, the charger is enabled.
Typically the P-channel MOSFET for the USB input has an
rDS(ON) of 600mΩ at room temperature. With a 380mA
charge current, the typical head room is 228mV. Thus, if the
input voltage drops to a level that the voltage difference
between the USB pin and the BAT pin is less than 228mV,
8
FN6687.0
February 13, 2009
ISL9228
Thermal Foldback (Thermaguard™)
Trickle
CC
CV
4.2V
ICDL
Charge
Voltage
VREC
Charge
Current
Input Bypass Capacitors
2.6V
18%IREF
IMIN
Charge
Indication
CHG
TIME
FIGURE 11. TYPICAL CHARGE CYCLE
Figure 11 shows the typical charge profile including the
end-of-charge event.
Power Presence Indication
When either the USB or the cradle input voltage is above the
POR threshold, the PPR pin internal open-drain MOSFET
turns on indicating the presence of input power.
Power-Good Conditions
Even if there is a power present, the charger will not deliver
any current to the output if the power-good conditions are
not met. The following two conditions together define the
power-good voltage range:
1. VCDRL or VUSB > VPOR
2. VCDRL or VUSB - VBAT > VOS
where VPOR is the power on reset threshold, VOS is the
offset voltage for the input and output voltage comparator. All
these thresholds have hysteresis, as given in the “Electrical
Specification” table on page 4. The charger will not charge
the battery if the input voltage does not meet the power-good
conditions.
9
The thermal foldback function reduces the charge current
when the internal temperature reaches the thermal foldback
threshold, which is typically +125°C. This protects the
charger from excessive thermal stress at high input voltages.
Due to the inductance of the power leads of the wall adapter
or USB source, the input capacitor type must be properly
selected to prevent high voltage transient during a hot-plug
event. A tantalum capacitors is a good choice for its high
ESR, providing damping to the voltage transient. Multi-layer
ceramic capacitors, however, have a very low ESR and
hence when chosen as input capacitors, a 1-Ω series
resistor must be used, as shown in the Typical Applications
Section, to provide adequate damping.
State Diagram
The state diagram for the charger functions is shown in
Figure 12. The diagram starts with the Power-Off state.
When at least one input voltage rises above the POR
threshold, the charge resets it self. If both input voltages are
in the power good range, the charger selects the CRDL input
as the power source. Then if the EN pin is at a logic HIGH
voltage, the charger stays in disabled state. If the EN pin
goes LOW, the fast charge starts. Any time the EN pin turns
HIGH, the charger returns to the disabled state. When the
EOC condition is reached, the CHG will turn to logic HIGH to
indicate a charge complete status but the charge will
continue. The EOC condition is then latched until one of the
three re-charge conditions is encountered, as shown in
Figure 11.
FN6687.0
February 13, 2009
ISL9228
VCRDL > VOVP OR VCRDL < VPOR
V USB > VOVP OR VUSB < VPOR
PWR OFF
CHARGER: OFF
/PPR: OFF
/CHG: OFF
VCRDL < VPOR
VOVP < VUSB > V POR
VUSB > VBAT + VOS
VOVP > VCRDL > VPOR
VOVP > VUSB > VPOR
VCRDL > VBAT + VOS
VOVP > VCRDL > VPOR
VUSB < VPOR
VCRDL > VBAT + VOS
POR
POR
USB INPUT SELECTED
CHARGER: OFF
/PPR: ON
/CHG: OFF
CRDL INPUT SELECTED
CHARGER: OFF
/PPR: ON
/CHG: OFF
YES
VFB = HI?
NO
CHARGER
DISABLED
NO
ANYTIME
WHEN
/EN = HI
CHARGER: OFF
/PPR: ON
/CHG: OFF
/EN = LO?
YES
YES
TRICKLE CHARGE
VBAT < VMIN?
CHARGER: ON
/PPR: ON
/CHG: ON
ANYTIME
WHEN
VFB=HI
NO
FAST CHARGE
CHARGER: ON
/PPR: ON
/CHG: ON
/EN TURNS
HIGH AND
THEN LOW
VBAT < VRCH
SELECTED
INPUT
REMOVED AND
RE-APPLIED
V BAT > VRCH
AND ICHG < IMIN
CHARGE
COMPLETE
CHARGER: OFF
/PPR: ON
/CHG: OFF
FIGURE 12. STATE DIAGRAM
10
FN6687.0
February 13, 2009
ISL9228
Dual Flat No-Lead Plastic Package (DFN)
L10.3x3C
2X
0.10 C A
A
10 LEAD DUAL FLAT NO-LEAD PLASTIC PACKAGE
D
MILLIMETERS
2X
0.10 C B
E
SYMBOL
MIN
NOMINAL
MAX
NOTES
A
0.85
0.90
0.95
-
A1
-
-
0.05
-
A3
6
INDEX
AREA
b
0.20 REF
0.20
D
TOP VIEW
B
D2
//
A
C
SEATING
PLANE
D2
6
INDEX
AREA
0.08 C
7
8
D2/2
1
2.33
2.38
2.43
7, 8
1.69
7, 8
3.00 BSC
1.59
e
1.64
-
0.50 BSC
-
k
0.20
-
-
-
L
0.35
0.40
0.45
8
N
10
2
Nd
5
3
NOTES:
1. Dimensioning and tolerancing conform to ASME Y14.5-1994.
NX k
2. N is the number of terminals.
3. Nd refers to the number of terminals on D.
E2
E2/2
4. All dimensions are in millimeters. Angles are in degrees.
5. Dimension b applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
NX L
N
N-1
6. The configuration of the pin #1 identifier is optional, but must be
located within the zone indicated. The pin #1 identifier may be
either a mold or mark feature.
NX b
e
(Nd-1)Xe
REF.
BOTTOM VIEW
5
0.10 M C A B
(A1)
9 L
5
7. Dimensions D2 and E2 are for the exposed pads which provide
improved electrical and thermal performance.
8. Nominal dimensions are provided to assist with PCB Land
Pattern Design efforts, see Intersil Technical Brief TB389.
CL
NX (b)
5, 8
Rev. 1 4/06
2
(DATUM A)
8
0.30
3.00 BSC
E
E2
A3
SIDE VIEW
(DATUM B)
0.10 C
0.25
-
9. COMPLIANT TO JEDEC MO-229-WEED-3 except for
dimensions E2 & D2.
e
SECTION "C-C"
C C
TERMINAL TIP
FOR ODD TERMINAL/SIDE
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
11
FN6687.0
February 13, 2009
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