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ISL9214
Data Sheet
January 3, 2006
ISL6299A
FN9212.1
Li-ion/Li-Polymer Battery Charger
Accepting Two Power Sources
Features
The ISL6299A 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
ISL6299A 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 ISL6299A features 28V and 7V maximum voltages for
the cradle and the USB inputs respectively. Due to the 28V
rating for the cradle input, low-cost, large output tolerance
adapters can be used safely. 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 for the cradle input 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 100°C, a thermal foldback function reduces
the charge current automatically to prevent further
temperature rise. The charger preconditions the battery with
low current when the battery voltage is below 2.6V. 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 minimum current, the CHG
pin indicates a logic HIGH signal and the status is latched.
The latch will be reset at one of these events: (1) the part is
disabled and re-enabled; (2) the selected input source has
been removed and re-applied, (3) The USBON turns LOW,
or (4) The BAT pin voltage falls below the recharge threshold
(~4.0V).
• Charge Current Thermaguard™ for Thermal
Protection
• Complete Charger for Single-Cell Li-ion/Polymer Batteries
Ordering Information
PART #
ISL6299AIRZ
(Note)
PART
TEMP.
MARKING RANGE (°C)
99AZ
ISL6299AIRZ-T 99AZ
(Note)
-40 to 85
PACKAGE
PKG.
DWG. #
10 Ld 3x3 DFN L10.3x3C
(Pb-free)
• Low Component Count
• Integrated Pass Element
• Fixed 380mA USB Charge Current
• Programmable Cradle Charge Current
• 28V Maximum Voltage for the Cradle Input
• Charge Indication
• Adapter Presence Indication
• Less than 0.5µA Leakage Current off the Battery when No
Input Power Attached
• Programmable end-of-charge current with latch for Cradle
Input
• Ambient Temperature Range: -40°C to 85°C
• No External Blocking Diode Required
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Smart Handheld Devices
• Cell Phones, PDAs, MP3 Players
• Digital Still Cameras
• Handheld Test Equipment
Related Literature
• 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
ISL6299A (DFN)
TOP VIEW
10 Ld 3x3 DFN Tape and Reel (Pb-free)
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
CRDL
1
10 BAT
USB
2
9
ICDL
PPR
3
8
GND
CHG
4
7
USBON
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 LLC.
Copyright Intersil Americas LLC. 2005-2006. All Rights Reserved. Thermaguard is a trademark of Intersil Americas LLC.
All other trademarks mentioned are the property of their respective owners.
ISL6299A
Block Diagram
CRDL
BAT
USB
TEMP
MONITOR
CA
+
CPPR
VA
ICDL
IR
CONTROL
USB
CPPR
VREF
REFERENCE
CURRENT
IMIN
+
CRDL
BAT
ENA
LBAT
EN
PPR
CONTROL
GND
CHG
USBON
2
FN9212.1
January 3, 2006
ISL6299A
Typical Applications
A Simple Charger Accepting Power from Both a USB Port and a Desktop Cradle
TO CRADLE
CONNECTOR
TO USB
CONNECTOR
TO BATTERY
CRDL
C1
ISL6299A
USB
R1
C2
BAT
RICD
ICDL
L
C3
ON
OFF
USBON
PPR
D1
D2
DISABLE
ENABLE
GND
IMIN
R3
CHG
EN
RIMIN
R2
COMPONENT SELECTION
RICDL
28.71k for 0.55A cradle charge current
RIMIN
158kfor 80mA end-of-charge current
R2, R3
350
C1, C2, C3
R1
1µF ceramic capacitor
1
D1, D2
LEDs
A Simple Charger with Programmable Charge Current and Wide Input Voltage Range
TO CRADLE
CONNECTOR
TO BATTERY
BAT
CRDL
C1
RICDL
ICDL
ISL6299A
USB
PPR
D1
D2
CHG
GND
IMIN
R3
USBON
EN
RIMIN
C3
R2
DISABLE
ENABLE
COMPONENT SELECTION
RICDL
28.71k for 0.55A cradle charge current
RIMIN
158kfor 80mA end-of-charge current
R2, R3
350
C1, C3
1µF ceramic capacitor
R1
D1, D2
3
1
LEDs
FN9212.1
January 3, 2006
ISL6299A
Absolute Maximum Ratings
Thermal Information
Supply Voltage (USB) . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V
Supply Voltage (CRDL) . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 28V
Other Input Voltage (EN, USBON, ICDL, IMIN, BAT) . . . -0.3V to 7V
Open-Drain Pull-Up Voltage (PPR, CHG) . . . . . . . . . . . . -0.3V to 7V
Thermal Resistance
JA (°C/W)
JC (°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
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300°C
Recommended Operating Conditions
Ambient Temperature Range . . . . . . . . . . . . . . . . . . . .-40°C to 85°C
Supply Voltage (USB Pin) . . . . . . . . . . . . . . . . . . . . . . 4.3V to 5.5V
Supply Voltage (CRDL Pin) . . . . . . . . . . . . . . . . . . . . . . 4.3V to 24V
Typical Cradle Charge Current . . . . . . . . . . . . . . . . . . 300mA to 1A
Typical USB Charge Current . . . . . . . . . . . . . . . . . . . . . . . . . 380mA
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
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 theta JC 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
3.2
3.7
4.0
V
-
150
250
mV
20
80
-
mV
-
0.05
0.5
A
-
150
220
A
-
150
220
A
-
0.4
0.8
mA
4.158
4.2
4.242
V
POWER-ON RESET
VIN-BAT OFFSET VOLTAGE
Rising Edge
VOS
Falling Edge
VOS
VBAT = 4.0V, use CHG pin 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
CRDL/USB Pin Supply Current
EN = LOW or floating
VOLTAGE REGULATION
Output Voltage (Note 4)
VCH
Load = 10mA
CRDL PMOS On Resistance (Note 8)
VBAT = 3.8V, ICHARGER = 0.3A
200
600
900
m
USB PMOS On Resistance (Note 8)
VBAT = 3.8V, ICHARGER = 0.3A
200
700
900
m
VBAT = 3.8V
1.17
1.20
1.23
V
500
550
600
mA
RICDL = 28.7k, VBAT = 2.0V, VCRDL = 5V
Given as a % of the CRDL ICHARGE
11
15
19
%
RIMIN = 158k
69
88
107
mA
CHARGE CURRENT (Note 5)
ICDL Pin Output Voltage
VICDL
CRDL Input Constant Charge Current
ICHARGE RICDL = 28.7k, VBAT = 3.8V, VCRDL = 5V
CRDL Input Trickle Charge Current
ITRICKLE
CRDL End-of-Charge Threshold
IMIN
USB Input Constant Charge Current
(Note 6)
ICHARGE USBON = HIGH, VBAT = 3.8V
325
380
425
mA
USB Input Trickle Charge Current (Note 4)
ITRICKLE
12
14
17
%
64
76
84
mA
USB End-of-Charge Threshold
IMIN
4
VBAT = 2.0V, given as a % of the USB ICHARGE
FN9212.1
January 3, 2006
ISL6299A
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
TFOLD
85
100
115
°C
USBON Logic Input High
1.3
-
-
V
USBON Logic Input LOW
-
-
0.4
V
EN Pin Logic Input High
1.3
-
-
V
EN Pin Logic Input Low
-
-
0.4
V
EN Pin Internal Pull Down Resistance
350
600
850
k
USBON Pin internal Pull Down Resistance
700
1000
1300
k
10
-
-
mA
PRECONDITIONING CHARGE THRESHOLD
Preconditioning Charge Threshold Voltage
INTERNAL TEMPERATURE MONITORING
Current Foldback Threshold (Note 7)
LOGIC INPUT AND OUTPUT
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 maximum and minimum limits are guaranteed over -40°C to 70°C ambient temperature range.
5. The charge current can be affected by the thermal foldback function if the IC under the test setup cannot dissipate the heat.
6. Constant current can be affected if the junction temperature exceeds 70 °C.
7. Guaranteed by characterization or correlation to other test.
8. Tested at TJ = 25°C.
Functional Pin Description
CRDL (Pin 1)
CHG (Pin 4)
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.
Charge indication pin. An open-drain output which turns ON
when the charge current from the cradle input is above
programmable IMIN or when the charge current from the
USB input is above the fixed end of charge current
threshold. Otherwise turns OFF.
USB (Pin 2)
Enable logic input. Connect to LOW or leave floating to
enable the charger.
USB input. This pin is usually connected to a USB port
power connector. Other sources that are lower than 5.5V 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 1 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 above its POR level, 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.
5
EN (Pin 5)
IMIN (Pin 6)
IMIN is the programmable input for the end-of-charge
current. IMIN is calculated by the following equation:
14478
I MIN = ---------------- – 4
R IMIN
 mA 
Where RIMIN is in k IMIN is only applicable to the cradle
charging. The USB EOC current has been fixed as shown on
the electrical specification table.
FN9212.1
January 3, 2006
ISL6299A
USBON (Pin 7)
Input Auto Selection
The USBON pin is a control input to turn off the USB charge
function if desired. Connect to LOW or leave floating to turn
off USB charge.
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.
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 the following
equations:
16685.5
I CLD = --------------------- – 0.026
R ICDL
0.1A  I CLD  0.7A
21242.1
I CDL = --------------------- – 0.188
R ICDL
0.7A  I CDL  1.1A
where RICDL is the resistor in connected to the ICDL pin
(see the Typical Application).
It is recommended that the charge current be programmed
in the range of 350mA to 650mA.
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.
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.
BAT (Pin 10)
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.
Description
The ISL6299A is designed for a single-cell Li-ion or Lipolymer 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 fixed at typically 80mA for the USB
input and programmable for the cradle input by the resistor
RIMIN.
6
USB Charge Current
When the USB port is selected as the power source, the
charge current enabled by the logic input at the USBON pin.
When the USBON is driven to logic LOW, the charger is
disabled. When the USBON is driven to logic HIGH, the
charge current is fixed at a typical value of 380mA. Thus for
the USB input, the USBON pin has a similar function as the
EN pin. The following table describes the USB charge
control by both the USBON pin and EN pin:
TABLE 1. USB CHARGE CONTROL
EN = LOW
EN = HIGH
USBON = LOW
Disabled
Disabled
USBON = HIGH
Enabled
Disabled
The USBON pin is equivalent to a logic LOW when left
floating. Typically the P-channel MOSFET for the USB input
has an rDS(ON) of 700m at room temperature. With a
380mA charge current, the typical head room is 260mV.
Thus, if the input voltage drops to a level that the voltage
difference between the USB pin and the BAT pin is less than
260mV, the rDS(ON) becomes a limiting factor of the charge
current; and the charger drops out the constant current
regulation.
Cradle Charge Current
The cradle charge current is enabled by the EN pin only, the
USBON pin has no control on the cradle charge current. 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 one of the equations
given in the ICDL pin description. Two equations are used
for the cradle current calculation, each corresponds to a
different range of currents. The typical rDS(ON) of the
P-channel MOSFET for the CRDL input is 600m 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.
FN9212.1
January 3, 2006
ISL6299A
Floating Charge Voltage
Power Presence Indication
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 70°C.
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.
Trickle Charge Current
Power-Good Range
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 14% of the programmed charge current
for the cradle input. If power comes from the USB input, the
trickle mode current is approximately 53mA.
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:
End-of-Charge Indication
The CHG pin internal open-drain MOSFET turns off when
the charge current falls below the IMIN threshold, which is
programmable for the cradle input and fixed for the USB
input. Once the end-of charge-current is reached, the CHG
status will be latched. The latch 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 USBON turns LOW and turns back to HIGH for the
USB input
1. VCDRL or VUSB > VPOR
2. VCDRL or VUSB - VBAT > VOS
where the VOS is the offset voltage for the input and output
voltage comparator, discussed shortly. Both VPOR, VOS
have hysteresis, as given in the Electrical Specification table.
The charger will not charge the battery if the input voltage
does not meet the power-good conditions.
Thermal Foldback (Thermaguard™)
The thermal foldback function reduces the charge current
when the internal temperature reaches the thermal foldback
threshold, which is typically 100°C. This protects the charger
from excessive thermal stress at high input voltages.
4. The BAT pin voltage falls below the recharge threshold
(~4.0V)
Regardless of the CHG pin status, however, the charger
does not turn off as long as an input power source is
attached.
7
FN9212.1
January 3, 2006
ISL6299A
Dual Flat No-Lead Plastic Package (DFN)
L10.3x3C
2X
10 LEAD DUAL FLAT NO-LEAD PLASTIC PACKAGE
0.15 C A
A
D
MILLIMETERS
2X
0.15 C B
E
SYMBOL
MIN
0.80
0.90
1.00
-
-
-
0.05
-
0.20 REF
0.18
D
D2
B
A
C
SEATING
PLANE
D2
6
INDEX
AREA
0.08 C
A3
SIDE VIEW
(DATUM B)
0.10 C
7
8
2.48
7, 8
-
3.00 BSC
1.49
e
1.64
1.74
7, 8
0.50 BSC
-
k
0.20
-
-
-
L
0.30
0.40
0.50
8
N
10
2
Nd
5
3
2. N is the number of terminals.
NX k
3. Nd refers to the number of terminals on D.
4. All dimensions are in millimeters. Angles are in degrees.
E2
5. Dimension b applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
E2/2
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 L
N-1
NX b
e
(Nd-1)Xe
REF.
BOTTOM VIEW
5
0.10 M C A B
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.
9. COMPLIANT TO JEDEC MO-229-WEED-3 except for
dimensions E2 & D2.
CL
NX (b)
2.38
1. Dimensioning and tolerancing conform to ASME Y14.5-1994.
(DATUM A)
8
5, 8
NOTES:
2
N
0.30
Rev. 0 3/05
D2/2
1
E2
0.25
-
3.00 BSC
2.23
E
//
NOTES
A
b
TOP VIEW
MAX
A1
A3
6
INDEX
AREA
NOMINAL
(A1)
9 L
5
e
SECTION "C-C"
C C
TERMINAL TIP
FOR ODD TERMINAL/SIDE
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9001 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
8
FN9212.1
January 3, 2006
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