ISL9230IRZ [RENESAS]
High Power Li-Ion Charger W/I-Path Management; QFN16; Temp Range: -40° to 85°C;型号: | ISL9230IRZ |
厂家: | RENESAS TECHNOLOGY CORP |
描述: | High Power Li-Ion Charger W/I-Path Management; QFN16; Temp Range: -40° to 85°C |
文件: | 总20页 (文件大小:1213K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
DATASHEET
NOT RECOMM
RECOMMEND
ENDED FOR NE
ED REPLACEM
ISL9301
W DESIGNS
ENT PART
ISL9230
FN7642
Rev 2.00
September 22, 2011
High Power Li-Ion Charger W/I-Path Management
The ISL9230 is a fully integrated high input voltage single-cell
Li-ion battery charger with power path management function.
This charger performs the CC/CV charge function required by
Li-ion batteries. The charger can withstand an input voltage up
to 26V but is disabled when the input voltage exceeds 6.6V
OVP threshold. The input current limit and charge current are
programmable with external resistors. When the battery
voltage is lower than 3.0V, the charger preconditions the
battery with 10% of the programmed charge current. When
the charge current reduces to the end-of-charge (EOC) current
level during the CV charge phase, the EOC indicator (CHG) will
toggle to a logic high to indicate the end-of-charge condition.
Features
• Complete Charger for Single-Cell Li-ion/Polymer Batteries
• Current Path Management Optimize for Charge and System
Currents
• Intelligent Timeout Interval Based on Actual Charge Current
• 1% Charger Output Voltage Accuracy
• Programmable Input Current Limit
• Programmable Charge Current
• NTC Thermistor Input
• Complies with USB Charger
The ISL9230 uses separate power paths to supply the system
load and the battery. This feature allows the system to
immediately operate with a completely discharged battery.
This feature also allows the charge to terminate when the
battery is full while continuing to supply the system power
from the input source, thus minimizing unnecessary
charge/discharge cycles and prolonging the battery life.
• Charge Current Thermal Foldback for Thermal Protection
• Trickle Charge for Fully Discharged Batteries
• 26V Maximum Voltage at VIN Pin
• Power Presence and Charge Indications
• Ambient Temperature Range: -40°C to +85°C
• 16 Ld 3x3 TQFN Package
Two indication pins (PG and CHG) allow simple interface to a
microprocessor or LEDs.
• Pb-Free (RoHS Compliant)
Applications
• Mobile Phones
• Blue-Tooth Devices
• PDAs
• MP3 Players
• Stand-Alone Chargers
• Other Handheld Devices
INPUT
TO SYS
C3
PART
DESCRIPTION
4.7µF X5R ceramic capacitor
1µF X5R ceramic capacitor
4.7µF X5R ceramic capacitor
(Application specific)
VOUT
VBAT
VIN
C1
C
C
1
ISL9230
2
R2
C2
R1
CONT
}
FROM
µP
C3
CHGEN
IREF
R
R
IREF
D1
PG
CHG
NTC
(Application specific)
R
IREF
TIME
ILIM
R
(Application specific)
ILIM
R
ILIM
BATT
TIME
R , R 300 to 1k, 5% resistor
T
1
2
AC/USB
MODE
RTIME
FROM µP
}
D , D LEDs for indication
GND
1
2
FIGURE 1. TYPICAL APPLICATION CIRCUIT
FN7642 Rev 2.00
September 22, 2011
Page 1 of 20
ISL9230
Block Diagram
Q1
VIN
VOUT
VOUT
IOUT
ISL9230
VIN
VBAT
VBAT
Q2
ILIM
IBAT
ILIMREF
CHG
PUMP
VOUTREF
VOUT
155°C
IREF
NTC
DIE TEMP
IBATREF
HITEMP
IBAT
IREF
VIN
VBAT
IOUT
IBAT
CLK
TIME
LOTEMP
S
R
VBAT
Q
VBATREF
DIE TEMP
125°C
AC/USB
MODE
CHG
PG
CONT
CHGEN
GND
FN7642 Rev 2.00
Page 2 of 20
September 22, 2011
ISL9230
Pin Configuration
ISL9230
(16 LD QFN)
TOP VIEW
16 15 14 13
NTC
ILIM
12
1
2
3
4
11 VOUT
VBAT
VBAT
VOUT
CHG
10
9
CHGEN
5
8
7
6
Pin Descriptions
PIN NUMBER
SYMBOL
DESCRIPTION
1
NTC
The NTC pin sources a current to develop a voltage across the battery pack NTC resistor. Placing a 10kNTC thermistor
will check if the battery’s temperature is out of the safe temperature window. If the temperature is out of the safe
operating window, the charger is suspended. For applications that do not require the use of the NTC function, connect
a 10kfixed resistor from NTC to GND to maintain a valid voltage level on the NTC pin.
2, 3
4
VBAT
Charger output pin. Connect this pin to the battery. A 1µF or larger X5R ceramic capacitor is recommended for
decoupling and stability purposes.
CHGEN
Battery charger enable pin. The CHGEN pin is a logic input pin to provide external charge control. An internal 670k
pull-down resistor is connected to this pin. Drive the pin HIGH to disable the charger during charging. When CHGEN is
high, VOUT is still active and the battery power remains available at VOUT. To ensure proper operation, do not leave this
pin unconnected.
5
6
AC/USB Selects between Adapter and USB input power. Pull high for selecting adapter power and pull low for USB power. An
internal 670k pull-down resistor is connected to this pin. To ensure proper operation, do not leave this pin
unconnected.
MODE
In combination with the AC/USB pin, this pin selects the input current limit levels. If AC/USB pin is low, a low on the
Mode pin sets the USB current to 100mA, and a high selects the 500mA limit. If the AC/USB pin is high, a low on the
mode pin selects the ILIM programmed current and a high will put the ISL9230 into a suspend state. An internal
280k pull-down resistor is connected to this pin. To ensure proper operation, do not leave this pin unconnected.
7
PG
Open-drain power good indication. The open-drain MOSFET turns on when the input voltage is above the POR threshold
but below the OVP threshold. This pin is capable of sinking 5mA (minimum) to drive a LED. The maximum voltage rating
for this pin is 6.5V and it is recommended to use VOUT as the pull-up voltage.
8
9
GND
CHG
Connect to ground.
Open-drain charge indication pin. This pin outputs a logic LOW when a charge cycle starts and goes Hi-Z when an
end-of-charge (EOC) condition is qualified. This pin is capable of sinking 5mA min. to drive an LED. When the charger
is disabled, the CHG is also in a Hi-Z state.
10, 11
12
VOUT
ILIM
Output connection to the system. When a valid input power is present, this pin provides a 3.4V regulated voltage for the
system during trickle charge and is maintained at VBAT + 225mV during fast charging. A 4.7µF or larger X5R ceramic
capacitor is recommended for decoupling and stability purposes.
Input current limit programming pin. Connect a resistor between this pin and the GND to set the input current limit
determined by Equation 1 when AC/USB = 1, MODE = 0
1610
(EQ. 1)
--------------
I
=
mA
200mA ILIM 1.5A
LIM
R
ILIM
Where R
is in k
ILIM
If the ILIM pin is left unconnected, all input current is disabled.
FN7642 Rev 2.00
Page 3 of 20
September 22, 2011
ISL9230
Pin Descriptions(Continued)
PIN NUMBER
SYMBOL
DESCRIPTION
13
VIN
Power input. The absolute maximum input voltage is 26V. A 4.7µF or larger value capacitor is recommended to be
placed very close to the input pin for decoupling purposes. Additional capacitance may be required to provide a stable
input voltage.
14
TIME
Timing resistor pin. The TIME pin determines the oscillation period by connecting a timing resistor between this pin and
GND. The oscillator also provides a time reference for the charger calculated in Equation 2. Equation 3 provides the
formula for finding the Pre-conditioning time, which is 1/10 of the Fast Charge timer. Leaving the TIME pin unconnected
sets the timer to the default values of 30 minutes for pre-conditioning and 5 hours for fast charge.
t
= 8 R
Min
(EQ. 2)
FAST
TIME
t
= 0.8 R
Min
(EQ. 3)
PRE
TIME
Where R
is in k
TIME
15
16
CONT
IREF
Active high overrides the end-of-charge (EOC) or timer termination. By pulling the continuous charge CONT pin high, the
device will continue to charge the battery when the current has fallen below I or the safety timer has timed out. The
status of this pin can not be changed after POR. The CONT pin is internally pulled down to GND by a 280k resistor,
EOC
but to ensure proper operation, do not leave the CONT pin floating.
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 4:
890
--------------
(EQ. 4)
I
=
mA
FAST
R
IREF
Where R
is in k. The IREF pin voltage also monitors the actual charge current during the entire charge cycle,
IREF
including the trickle, constant-current, and constant-voltage phases. When disabled, V
= 0V.
IREF
-
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.
TABLE 1. INPUT CURRENT LIMIT SELECTION
AC/USB
MODE
DESCRIPTION
USB 100mA limit
USB 500mA limit
current programming
0
0
1
1
0
1
0
1
R
ILIM
Suspend mode
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
PART
MARKING
TEMP RANGE
(°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL9230IRZ
NOTES:
DLBB
-40 to +85
16 Ld 3x3 QFN
L16.3x3E
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. 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.
3. For Moisture Sensitivity Level (MSL), please see device information page for ISL9230. For more information on MSL please see techbrief TB363.
FN7642 Rev 2.00
Page 4 of 20
September 22, 2011
ISL9230
Absolute Maximum Ratings (Referenced to GND)
Thermal Information
VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 26V
All other pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.5V
Thermal Resistance (Typical)
QFN Package (Notes 4, 5) . . . . . . . . . . . . . .
(°C/W)
41
(°C/W)
3.0
JA
JC
I
(Input Current) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.6A
Maximum Junction Temperature (Plastic Package) . . . .-40°C to +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
VIN
Output Current (Continuous)
I
I
I
I
O
(Continuous) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A
(Discharge Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A
(Charging Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5A
VOUT
VBAT
VBAT
Output Sink Current CHG, PG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15mA
Recommended Operating Conditions
Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Maximum Supply Voltage (VIN Pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24V
Operating Supply Voltage (VIN Pin) . . . . . . . . . . . . . . . . . . . . . 4.3V to 6.25V
Programmed Fast Charge Current . . . . . . . . . . . . . . . . .300mA to 1500mA
I
I
I
I
Input current, VIN Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5A
VIN
Current, VOUT Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5A
Current, VBAT Pin (Discharging) . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5A
Current, BAT Pin (Charging). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5A
VOUT
VBAT
VBAT
ESD Ratings
Human Body Model (Tested per JESD22-A114F) . . . . . . . . . . . . . . .2.5kV
Machine Model (Tested per JESD22-A115-A). . . . . . . . . . . . . . . . . . 250V
Charged Device Model (Tested per JESD22-C101D) . . . . . . . . . . . 1000V
Latch Up (Tested per JESD78B, Class II, Level A) . . . . . . . . . . . . . . . 100mA
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:
4. is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
JA
Brief TB379.
5. For , the “case temp” location is the center of the exposed metal pad on the package underside.
JC
Electrical Specifications Typical values are tested at V = 5V, V
= 3.6V and the ambient temperature at +25°C. MIN/MAX
BAT
limits are across the operating conditions, unless otherwise specified. Boldface limits apply over the operating temperature range, -40°C to
IN
+85°C.
MIN
MAX
PARAMETER
POWER-ON RESET
SYMBOL
TEST CONDITIONS
(Note 8)
TYP
(Note 8) UNITS
Rising POR Threshold
Falling POR Threshold
POR Deglitch Time
V
V
V
= 3.0V, use PG to indicate the comparator output
BAT
3.2
3.36
3.05
1.2
3.5
V
V
POR_R
V
2.92
3.18
POR_F
t
>V to PG Low
POR
ms
PG
IN
V
OFFSET VOLTAGE
IN-BAT
Rising Threshold
V
V
V
= 3.6V, V ramps from 3.5V to 4V
IN
50
20
80
60
130
6.9
mV
mV
OS_R
BAT
BAT
Falling Threshold
V
= 3.6V, V ramps from 4V to 3.5V
IN
OS_F
VIN OVERVOLTAGE PROTECTION
Overvoltage Protection Threshold
OVP Threshold Hysteresis
Input Overvoltage Blanking
Input OVP Recovery Time
BATTERY DETECTION
Battery Detection Current
Detection Timer
V
6.25
6.6
110
50
V
OVP
V
mV
µs
OVP_HYS
t
OVP_BLK
t
1.2
ms
OVP-REC
I
V
= 2.5V (Note 7)
-5
-7.5
-10
mA
ms
DET
BAT
t
250
DET
ILIM, IREF SHORT CIRCUIT DETECTION (CHECKED DURING START-UP)
Current Source
I
VIN > VPOR and VIN > VBAT + VOS
1.4
mA
SC
FN7642 Rev 2.00
Page 5 of 20
September 22, 2011
ISL9230
Electrical Specifications Typical values are tested at V = 5V, V
= 3.6V and the ambient temperature at +25°C. MIN/MAX
BAT
limits are across the operating conditions, unless otherwise specified. Boldface limits apply over the operating temperature range, -40°C to
IN
+85°C. (Continued)
MIN
MAX
PARAMETER
SYMBOL
TEST CONDITIONS
(Note 8)
TYP
510
(Note 8) UNITS
Short-Circuit Detection threshold
SHORT CIRCUIT DETECTION
V
VIN > VPOR and VIN > VBAT + VOS
mV
SC
Battery Short Circuit Detection Current
Battery Short Circuit Threshold
Output Short Circuit Detection at Valid VIN
I
V
= 1.5V
BAT
3
5.5
1.8
0.9
8
mA
V
BSC
V
1.6
0.8
2.0
1.0
BSC
V
VIN > VPOR
V
OSC1
VIN > VBAT + VOS
Output Short Circuit Detection, Load
Sharing Mode (Note 7)
V
Referenced to VBAT
VIN > VPOR
-200
-250
-300
mV
OSC2
VIN > VBAT + VOS
Blanking Time for VSC2
Recovery Time for VSC2
OPERATING CURRENT
BAT Pin Supply Current
VIN Pin Suspend Current
VIN Pin Supply Current
VOLTAGE REGULATION
Output Voltage
BT
RT
250
60
s
OSC2
ms
OSC2
I
No supply at V , CHGEN = LOW
IN
6.5
200
1.5
µA
µA
VBAT
I
I
Charger enabled, AC/USB = Mode = 1
Charger enabled
VIN
VIN
mA
V
VIN > VOUT + VDO_Q1, VBAT > 3.2V
VBAT + VBAT + VBAT +
V
O_REG
System current + charge current = 15mA
0.150
0.225
0.270
VIN > VOUT + VDO_Q1, VBAT < 3.2V
3.3
3.4
3.5
System current + charge current = 15mA
Charger Output Voltage
V
Charge current = 10mA, T = +25°C
A
4.185
4.16
1.8
4.20
4.20
2.24
4.215
4.23
2.55
V
V
B_REG
Charge current = 10mA
IREF Pin Voltage
V
V
= 3.8V
BAT
IREF
POWER PATH
Output DPPM Threshold Voltage
V
Output voltage threshold where charge current starts to
reduce. Referenced to regulated V
-200
-100
4.36
-50
mV
V
DPPM
OUT
Input DPM Threshold Voltage
V
Input voltage threshold where the input current starts
to reduce, AC/USB = 0, MODE = X
IN-DPM
Battery Supply Enter Threshold
Battery Supply Exit Threshold
DROPOUT VOLTAGE
V
Referenced to VBAT, V
Referenced to VBAT, V
= 3.6V
= 3.6V
-40
-20
mV
mV
BSUP_ON
BAT
BAT
V
BSUP_OFF
Q1 Dropout Voltage (VIN-VOUT)
(Note 7)
V
V
V
V
= 4.3V, I = 1A, V = 4.2V
IN BAT
300
40
475
80
mV
mV
DO_Q1
DO_Q2
OUT
Q2 Dropout Voltage
(VBAT-VOUT)
= 0V, VBAT > 3V, IOUT = 1A
IN
RECHARGE THRESHOLD
Recharge Voltage Threshold
Recharge Deglitch Time
V
Referenced to V
-215
200
-120
300
20
-50
mV
ms
ms
RCH
B_REG
(CONT = 0)
t
t
includes t
DET
RCH
RCH
Delay Time, Input Power Loss to VOUT
LDO Turn-Off
t
V
= 3.6V Time is measure from VIN: 5V to 3V at 1µs
BAT
NO-IN
fall time
CURRENT REGULATION (Note 6)
Input Current Limit Range
I
LIM_RNG
AC/USB = 1, Mode = 0
1500
mA
FN7642 Rev 2.00
Page 6 of 20
September 22, 2011
ISL9230
Electrical Specifications Typical values are tested at V = 5V, V
= 3.6V and the ambient temperature at +25°C. MIN/MAX
BAT
limits are across the operating conditions, unless otherwise specified. Boldface limits apply over the operating temperature range, -40°C to
IN
+85°C. (Continued)
MIN
MAX
PARAMETER
SYMBOL
TEST CONDITIONS
(Note 8)
TYP
1000
375
88
(Note 8) UNITS
Input Current Limit Accuracy
I
I
I
I
R
R
= 1.62k
= 4.32k
955
340
78
1045
410
98
mA
mA
mA
mA
mA
mA
mA
mA
LIM_AC1
LIM_AC2
LIM_100
LIM_500
ILIM
ILIM
AC/USB = 0, Mode = 0
AC/USB = 0, Mode = 1
380
300
450
900
39
440
500
1500
550
1100
58
Fast Charge Current Range
Fast Charge Current
I
V
< 4.2V, AC/USB = 1, Mode = 0
BAT
FAST
R
R
= 1.78k
= 887
500
1000
49
IREF
IREF
Trickle Charge Current
End Of Charge Current
I
AC/USB, MODE not equal to (1, 1)
= 1.78kI 88R
TRK
R
)
IREF
IREF
TRK
I
I
AC/USB = 0, Mode = 0, R
= 887
= 887
13
70
76
29
96
96
25
46
mA
mA
mA
ms
EOC_USB100
IREF
IREF
AC/USB = 0, Mode = 1, R
125
116
EOC_USB500
I
R
= 887
IREF
EOC_AC
End Of Charge Deglitch Time
t
EOC
PRECONDITIONING VOLTAGE THRESHOLD
Preconditioning Threshold Voltage
V
VIN > VPOR and VIN > VBAT + VOS
2.9
3.0
25
3.1
V
MIN
Trickle Charge to Fast Charge Deglitch
Time
t
t
ms
CHG_LH
Fast Charge to Trickle Charge Deglitch
Time
25
ms
CHG_HL
CHARGING TIMERS (Note 7)
Fast Charge Timer
t
R
R
R
R
= 30k
180
240
240
300
24
300
360
Min
Min
FAST
TIME
TIME
TIME
TIME
= Floating
= 30k
Trickle Charge Timer
t
PRE
= Floating
24
30
36
INTERNAL TEMPERATURE MONITORING
Charger Current Thermal Foldback
Threshold
T
125
°C
FOLD
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
EXTERNAL TEMPERATURE MONITORING
Thermistor Bias Current
T
T rising
J
155
20
°C
°C
SD
T
SD_HYS
I
VIN >VPOR and VIN > VBAT + VOS
72
75
295
30
78
A
mV
mV
mV
mV
ms
mV
T
High Temperature Threshold
High Temperature Hysteresis
Low Temperature Threshold
Low Temperature Hysteresis
Temperature Trip Deglitch Time
V
V
V
V
V
falling
240
340
TMAX
NTC
NTC
NTC
NTC
V
rising after reaching V
rising
TMAX_H
TMAX
V
2000
2100
300
50
2200
TMIN
V
falling after reaching V
TMIN
TMIN_H
t
Measured from NTC fault to charger disabled
Referenced to VIN, NTC unconnected
T_DG
NTC Pin Disable Threshold
V
-300
DIS_NTC
LOGIC INPUT AND OUTPUTS
CHGEN, CONT, MODE, AC/USB Logic
Input High
1.4
V
FN7642 Rev 2.00
Page 7 of 20
September 22, 2011
ISL9230
Electrical Specifications Typical values are tested at V = 5V, V
= 3.6V and the ambient temperature at +25°C. MIN/MAX
BAT
limits are across the operating conditions, unless otherwise specified. Boldface limits apply over the operating temperature range, -40°C to
IN
+85°C. (Continued)
MIN
MAX
PARAMETER
SYMBOL
TEST CONDITIONS
(Note 8)
TYP
(Note 8) UNITS
CHGEN, CONT, MODE, AC/USB Logic
Input Low
0.4
770
340
V
CHGEN and AC/USB Pin Internal
Pull-Down Resistance
570
220
670
280
k
k
CONT and MODE Pin Internal Pull-Down
Resistance
PG, CHG
Driving Capability when LOW
Leakage Current when HIGH
NOTES:
Pin Voltage = 0.4V
Pin Voltage = 5V, V
5
mA
µA
= V
= 5V
BAT
1
OUT
6. The input current charge current can be affected by the thermal foldback function if the IC under the test setup cannot dissipate the heat.
7. Limits established by characterization and are not production tested.
8. 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.
FN7642 Rev 2.00
Page 8 of 20
September 22, 2011
ISL9230
Typical Characteristics
V
= 5V, V = 3.6V, AC/USB = 1, MODE = 0, T = +25°C, unless otherwise
BAT A
IN
specified.
2V/DIV
V
OUT
END OF CHARGE OCCURS
AGAIN WHEN VBAT > 4.2V
RECHARGE OCCURS WHEN
VBAT FALLS BELOW 100mV
FROM THE CV THRESHOLD
CV CHARGE OCCURS
WHEN VBAT REACHES
4.2V
VBAT RAMPING UP
FROM 0V
2V/DIV
2V/DIV
2V/DIV
FAST CHARGE BEGINS
WHEN VBAT > 3V
V
V
IN
BAT
END OF CHARGE OCCURS
WHEN IBAT < IEOC
CHG
2V/DIV
TRICKLE CHARGE
BEGINS WHEN
VBAT > 1.8V
I
BAT
200mA/DIV
200mA/DIV
V
OUT
5V/DIV
I
CHG
BAT
10ms/DIV
200s/DIV
FIGURE 2. DESCRIPTION OF CHARGING MODES AS V
VARIES
FIGURE 3. ADAPTER PLUG-IN WITH BATTERY CONNECTED
BAT
BATTERY NOT PRESENT
BATTERY REMOVED
2V/DIV
1V/DIV
2V/DIV
BATTERY INSERTED
V
V
BAT
IN
5V/DIV
2V/DIV
V
OUT
CHG
1V/DIV
5V/DIV
V
OUT
V
BAT
BATTERY DETECTION MODE
CHG
500mA/DIV
I
BAT
TRICKLE CHARGE
200ms/DIV
200ms/DIV
FIGURE 4. BATTERY DETECTION - BATTERY REMOVED
FIGURE 5. BATTERY DETECTION - BATTERY INSERTED/REMOVED
5V/DIV
5V/DIV
CHGEN
CHGEN
5V/DIV
5V/DIV
V
V
OUT
OUT
TRICKLE CHARGE
500mA/DIV
500mA/DIV
I
I
BAT
BAT
500mA/DIV
500mA/DIV
I
I
OUT
OUT
4ms/DIV
4ms/DIV
FIGURE 6. CHARGER ON/OFF BY CHGEN (R
= 10Ω
FIGURE 7. CHARGER ON/OFF CHGEN (R
= 10, V = 3.6V)
BAT
OUT
OUT
FN7642 Rev 2.00
Page 9 of 20
September 22, 2011
ISL9230
Typical Characteristics
V
= 5V, V = 3.6V, AC/USB = 1, MODE = 0, T = +25°C, unless otherwise
BAT A
IN
specified. (Continued)
V
OUT
2V/DIV
2V/DIV
5V/DIV
V
BAT
5V/DIV
5V/DIV
V
V
OUT
BAT
500mA/DIV
500mA/DIV
I
OUT
V
I
IN
BAT
2V/DIV
PG
10ms/DIV
20s/DIV
FIGURE 8. OVP FAULT V = 5V TO 15V, R
IN
= 10Ω
FIGURE 9. ENTERING AND EXITING DPPM MODE
OUT
5V/DIV
5V/DIV
2V/DIV
V
BAT
V
V
BAT
OUT
5V/DIV
2V/DIV
I
V
OUT
2A/DIV
VIN
CHG
10A/DIV
500mA/DIV
I
I
BAT
OUT
200µs/DIV
100ms/DIV
FIGURE 10. V
SHORTED WITH BATTERY CONNECTED
FIGURE 11. V
TOGGLE FROM 4.3V TO 3.8V (NO OUTPUT)
BAT
OUT
600
500
400
300
200
100
0
1.4
1.3
1.2
1.1
1.0
0
2
4
6
8
10 12 14 16 18 20 22 24
(V)
-50
-25
0
25
50
75
100
125
V
TEMPERATURE (°C)
IN
FIGURE 12. SHUTDOWN CURRENT CHGEN = 1
FIGURE 13. VIN PIN SUPPLY CURRENT CHGEN = 0
FN7642 Rev 2.00
Page 10 of 20
September 22, 2011
ISL9230
Typical Characteristics
V
= 5V, V
= 3.6V, AC/USB = 1, MODE = 0, T = +25°C, unless otherwise
IN
BAT A
specified. (Continued)
600
80
I
= 1A
I
= 1A
LOAD
LOAD
70
60
50
40
30
20
10
0
V
V
= 0V
IN
500
400
300
200
100
0
= 3.6V
BAT
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
TEMPERATURE (°C)
TEMPERATURE (°C)
FIGURE 14. DROPOUT VOLTAGE (Q1) vs TEMPERATURE
FIGURE 15. DROPOUT VOLTAGE (Q2) vs TEMPERATURE
43
1.2
1.0
0.8
0.6
0.4
0.2
0.0
I
V
= 1A
LOAD
= 0V
IN
41
39
37
35
33
3.0
3.2
3.4
3.6
3.8
4.0
4.2
100 105 110 115 120 125 130 135 140 145 150
TEMPERATURE (°C)
V
(V)
BAT
FIGURE 16. DROPOUT VOLTAGE (Q2) vs V
FIGURE 17. THERMAL REGULATION OF I
BAT
BAT
4.45
4.44
4.43
4.42
4.41
4.40
4.39
4.23
4.21
4.19
4.17
4.15
I
= 10mA
I
= 10mA
OUT
BAT
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
TEMPERATURE (°C)
TEMPERATURE (°C)
FIGURE 18. BATTERY VOLTAGE REGULATION vs TEMPERATURE
FIGURE 19. OUTPUT VOLTAGE REGULATION vs TEMPERATURE
FN7642 Rev 2.00
Page 11 of 20
September 22, 2011
ISL9230
Typical Characteristics
V
= 5V, V
BAT
= 3.6V, AC/USB = 1, MODE = 0, T = +25°C, unless otherwise
A
IN
specified. (Continued)
54
4.214
I
= 1A
I
= 100mA
BAT
LOAD
R
V
= 1.82kΩ
= 2V
4.212
4.210
4.208
4.206
4.204
4.202
4.200
IREF
BAT
53
52
51
50
49
48
4.5 4.7 4.9 5.1 5.3 5.5 5.7 5.9 6.1 6.3 6.5
(V)
-50
-25
0
25
50
75
100
125
V
TEMPERATURE (°C)
IN
FIGURE 20. TRICKLE CHARGE vs TEMPERATURE
FIGURE 21. BATTERY VOLTAGE vs INPUT VOLTAGE
4.2100
4.2095
4.2090
4.2085
4.2080
4.2075
4.2070
4.2065
4.2060
4.2055
4.2050
4.440
4.435
4.430
4.425
4.420
4.415
4.410
V
is FLOATING
BAT
0.1
0.3
0.5
0.7
0.9
(A)
1.1
1.3
1.5
0.0
0.2
0.4
0.6
0.8
(A)
1.0
1.2
1.4
1.6
I
I
OUT
BAT
FIGURE 22. BATTERY VOLTAGE vs CHARGE CURRENT (CV MODE)
FIGURE 23. OUTPUT VOLTAGE vs OUTPUT CURRENT
4.50
1.2
V
IS FLOATING
OUT
4.45
4.40
4.35
4.30
4.25
4.20
4.15
4.10
V
1.0
0.8
0.6
0.4
0.2
0
OUT
V
BAT
0.1
0.3
0.5
0.7
I
0.9
(A)
1.1
1.3
1.5
0.0
0.5
1.0
1.5
2.0
2.5
(V)
3.0
3.5
4.0
4.5
BAT
V
BAT
FIGURE 24. V
AND V
vs CHARGE CURRENT (CV MODE)
OUT
FIGURE 25. BATTERY VOLTAGE vs CHARGE CURRENT (CC MODE)
BAT
FN7642 Rev 2.00
September 22, 2011
Page 12 of 20
ISL9230
Typical Characteristics
V
= 5V, V
BAT
= 3.6V, AC/USB = 1, MODE = 0, T = +25°C, unless otherwise
A
IN
specified. (Continued)
1.2
1.0
0.8
0.6
0.4
0.2
0
3.50
3.45
3.40
3.35
3.30
3.25
3.20
3.6
4.0
4.4
4.8
5.2
(V)
5.6
6.0
6.4
6.8
-50
-25
0
25
50
75
100
125
V
TEMPERATURE (°C)
IN
FIGURE 26. CHARGE CURRENT vs INPUT VOLTAGE
FIGURE 27. INPUT VOLTAGE POR THRESHOLD vs TEMPERATURE
SHORT
REMOVED
Q2 ON
SHORT
Q2 OFF
BTOSC2
RTOSC2
OCCURED
Q2 OFF
Q2 ON
RTOSC2
T < BTOSC2
BTOSC2
SHORT
OCCURED
= VBAT
(VOUT = ~ 0V)
Q2 IS OFF
SHORT
REMOVED
= IOUT X RDSON (Q2)
IOUT = NORMAL,
Q2 IS ON
VOSC2
BTOSC2
= 0V
IOUT = 0,
Q2 IS ON,
VOUT = VBAT
= ISC X RDSON (Q2)
VOUT IS SHORTED, Q2 IS ON
TIME
FIGURE 28. VOUT SHORT CIRCUIT CHARACTERISTIC AT SUPPLEMENTAL MODE
FN7642 Rev 2.00
Page 13 of 20
September 22, 2011
ISL9230
PG Indication
The PG pin is an open-drain output to indicate the presence of a
good supply voltage on the VIN pin. If V is higher than the POR
threshold and lower than the OVP threshold, an internal open-drain
Theory of Operation
When a valid input voltage is applied at VIN, the ISL9230 first
IN
regulates V
at 3.4V or at VBAT plus 225mV, depending on the
OUT
battery voltage. If the battery voltage is below 3.2V, the ISL9230
regulates V at 3.4V. If the battery voltage is higher than 3.2V,
FET is turned on. If V suddenly falls below the POR falling
IN
OUT
will be regulated at VBAT plus 225mV. The charge current is
threshold or rises above the OVP rising threshold, the open-drain FET
will turn off. When turned on, the PG pin should be able to sink at
least 5mA current under all operating conditions.
V
OUT
also dependent on the battery voltage. When V
is less than
BAT
3.0V, the ISL9230 trickle charges the battery at a reduced
current, as specified in the "Electrical Specifications" table on
The PG pin can be used to drive a LED or to interface with a
microprocessor.
page 7. Once V
reaches 3.0V, the fast charge phase starts.
BAT
When the system exceeds the maximum available current, either
limited by the IC or by the input power supply, the charger FET Q2
is operated in a reverse mode, i.e. it provides battery current to
the system instead of charging.
Power-Good Range
The power-good range is defined by the following three conditions:
1. V > V
IN
POR
> V
TRICKLE
CC
CV
2. V - V
IN BAT
OS
4.2V
CHARGE
VOLTAGE
I
3. V < V
IN OVP
V
FAST
RCH
where V is the offset voltage between the input and charger
OS
CHARGE
CURRENT
output. The V
is the overvoltage protection threshold given in
the “Electrical Specifications” table on page 5. All V , V , and
OVP
POR OS
3.0V
V
have hysteresis.
OVP
I
TRK
CHG Indication
I
EOC
TIME
The CHG is an open-drain output. The open drain FET turns on
when the charger starts to charge and turns off when the EOC
condition is qualified. Once the EOC condition is qualified, the
CHG signal is latched in a Hi-Z state. The EOC condition is
qualified when both of the following conditions are satisfied:
CHG
CHG INDICATION
FIGURE 29. TYPICAL CHARGING CYCLE FOR CONT = L
1. V
> V
RCH
BAT
The charger function is similar to other Li-ion battery chargers,
i.e., it charges the battery at a constant current (CC) or a constant
voltage (CV) depending on the battery terminal voltage. The
2. I
< I
EOC
BAT
After being turned off, even if the battery is being automatically
recharged later, the CHG indication will not be turned on again
until one of the following events is encountered:
constant current I
is set by the external resistor R .
FAST
IREF
Depending on the combination of the AC/USB and the MODE pin
status, the actual charge current may be reduced by the input
current limit. When the battery voltage reaches the final voltage
of 4.2V, the charger enters the CV mode and regulates the
battery voltage at 4.2V to fully charge the battery without the risk
of overcharging. Upon reaching an end-of-charge (EOC) current,
the CHG will turn to high impedance to indicate a charge
complete state and if CONT is low, Q2 will be turned off to
terminate charging. Figure 29 shows the typical charge profile
with the EOC recharge events when CONT is low.
1. Input power being re-cycled
2. CHGEN signal being toggled
3. The battery is removed and re-inserted
The CHG signal can be interfaced either with a microprocessor
GPIO or a LED for indication. A de-glitch delay of 25ms for both
edges is implemented to prevent nuisance triggering during
some short transient conditions.
Charge Termination, Recharge and Timeout
The EOC current level is internally set at 10% of the fast charge
When an EOC condition is reached, the CHG pin changes to Hi-Z to
indicate the end-of-charge condition and the charging is terminated
if the CONT pin is in logic low. When a recharge condition is met, the
safety timer will be reset to zero and the charging re-starts.
current as set by R
types. For USB100 input, the EOC current is set at 3.3% of the
fast charge current as set by R . The CHG signal pulls low
when the trickle charge starts and turns to high impedance at an
EOC event.
for AC adapter input and USB500 input
IREF
IREF
In the event a timeout interval has elapsed before the EOC
condition is reached, a timeout fault condition is triggered. The
timeout fault condition is indicated by the CHG pin being toggled
between HI and LO every 0.5s. The timeout fault condition can be
cleared by removing and reapplying the input power to the IC.
A thermal foldback function reduces the charge current anytime
when the die temperature reaches typically +125°C. This function
guarantees safe operation when the printed-circuit board (PCB) is
not capable of dissipating the heat generated by the linear charger.
Under the EOC, timeout and timeout fault conditions, the power
The ISL9230 can withstand an input voltage up to 26V but will be
disabled when the input voltage exceeds the OVP threshold, 6.6V
typical, to protect against unqualified or faulty AC adapters.
delivery to V
is not impacted. The battery continues to supply
OUT
current to VOUT if needed, as described in “Dynamic Power Path
Management” on page 15.
FN7642 Rev 2.00
Page 14 of 20
September 22, 2011
ISL9230
The charge termination current is calculated as follows:
For AC or USB500 input:
from dropping further. Therefore, the V -DPM feature prevents
IN
the USB port from crashing.
(EQ. 5)
(EQ. 6)
I
= 0.1XI
EOC
FAST
Short Circuit Detection and Battery Presence
By setting CHGEN = LO, the ISL9230 first checks to see if there is
a short-circuit on the VBAT pin. During the short circuit detection,
a current of 5.5mA is sourced from VBAT to the battery. If VBAT is
USB100 input:
I
= 0.033XI
EOC
FAST
Where I
FAST
is the fast charge current set by R
.
IREF
above V
after the test, charging current I
begins. During
BSC
TRK
battery detection, a current sink of a duration t
detect if a battery has been installed or removed while power is
applied to the VIN pin. A pulsed switch sinks a 7.5mA current
is used to
DET
Disabling the Charge Termination Option
By setting the CONT pin low, the charge termination option will
occur when either I < I or the safety timer times out. This
BAT EOC
from VBAT. If V
is above V
after the sink test, charging
BAT
MIN
function can be disabled by selecting the CONT pin high but
choosing the correct charge termination function needs to be
done prior to POR. When CONT is high, the safety timers are
suspended. For EOC detection, CHG status is not affected by the
current begins. If the voltage drops below V
within t , it
DET
MIN
indicates the battery may have been removed or the battery
safety circuit is open. The IC will then apply I for t to close,
TRK DET
if possible, the battery safety circuit. If the voltage rises above
state of the CONT pin, i.e. when I
< I
, the CHG will turn to
BAT
EOC
V
, this indicates a missing battery condition. If the V
RCH
voltage is within V
BAT
, it is determined that a
high impedance regardless of the status of CONT.
< V
< V
MIN
BAT
RCH
battery has been installed and charging is initiated.
ILIM Pin Function
The ILIM pin is provided to control the maximum current drawn
by the ISL9230 at the VIN pin to supply the system and charge
the battery. This enables the system designer to ensure that the
IC does not draw more than the source can provide.
Intelligent Timer
The internal timer in the ISL9230 provides a time reference for
the maximum charge time limit. The nominal clock cycle for the
reference time is set by the external resistor connected between
the TIME pin and GND and is given by Equations 2 and 3.
IREF Pin Function
The nominal maximum charge time interval is calculated based on
the assumption that the programmed charge current is always
available during the entire charging cycle. However, due to the PPM
control, the current limit of the input source, or thermal foldback,
the actual charge current maybe reduced during the constant
current charge period. Under such conditions, the Intelligent Timer
control will increase the timeout interval accordingly to allow
approximately the same mAh product as the original timeout
interval at the programmed current. The Intelligent Timer is
suspended when CONT is asserted high.
The IREF pin has the two functions as described in the "Pin
Descriptions" on page 4. The fast charge current can be
programmed by the R
over the range of 300mA to 1500mA
IREF
for AC adapter input. The second function of the IREF pin is for
monitoring the charge current by measuring the voltage at this
pin, which is proportional to the charge current.
Dynamic Power Path Management
The power path management function of the ISL9230 controls
the charge current and the system current when charging the
battery with system load. The available input current, which is
either limited by the ISL9230 or by the input power source,
whichever is smaller, is properly split into two paths, one to the
battery and the other to the system. The priority is given to the
system. When the output voltage drops to the DPPM threshold,
which is the regulated output voltage minus 100mV, the
Dynamic Power Path Management (DPPM) starts to function.
The DPPM control will first allocate the available current to
satisfy the system needs, using the remaining current to charge
the battery. If the total available current is not enough to supply
the system need, when the output voltage drops to 40mV below
the battery voltage, the DPPM control will turn on the charge
control FET, allowing the battery to supply current to the system
load. Thus, when DPPM occurs, the battery may be charged at a
current smaller than the programmed constant current.
Thermistor Interface
To ensure a safe charging temperature range, the ISL9230
incorporates a NTC pin to interface with the NTC thermistor in the
battery pack to monitor the battery temperature. A constant current
source is provided at this pin. The temperature range is determined
by the external negative temperature coefficient (NTC) thermistor.
The voltage thresholds and the current source value of the ISL9230
are optimized for the 103AT type industry standard thermister.
The ISL9230 uses a window comparator to set the valid
temperature window. When the NTC pin voltage is out of the
window anytime during charging, indicating either the
temperature is too hot or too cold to charge, the ISL9230 stops
charging. The CHG, however will stay low to indicate a "charging"
condition. When such an invalid temperature condition is
encountered, the safety timer will stop counting. When the
temperature returns to the set range, the charging resumes and
the timer resumes counting from where it stopped.
Input DPM Mode (V -DPM)
IN
V
-DPM is a special feature that is designed for current-limited
IN
USB ports. V -DPM is engaged when the ISL9230 is configured
for USB100 (AC/USB = 0, MODE = 0) or USB500 (AC/USB = 0,
When the CONT is high, the temperature sensing function can be
disabled by pulling the NTC pin to a voltage level above the VDIS_NTC,
as shown on the “Electrical Specifications” table on page 7.
IN
MODE = 1) modes. During operation of V -DPM, the input
IN
voltage is monitored and if VIN drops to the threshold of
V
-DPM, the input current is reduced to keep the input voltage
IN
FN7642 Rev 2.00
Page 15 of 20
September 22, 2011
ISL9230
Q1
X3
X3 VOUT
VIN
Q2
X3
VBAT
TEMPERATURE
MONITORING
IT
ISEN
IR
+
-
+
-
CA
VA
VREF
REF
IREF
IREF
CONTROL
FIGURE 30. CHARGE CURRENT THERMAL FOLDBACK CONTROL
Thermal Foldback
Applications Information
Input Bypass Capacitor
The input capacitor is required to suppress the power supply
transient response during transitions. Typically, a 4.7µF capacitor
should be sufficient to suppress the power supply noise.
The thermal foldback function starts to reduce the charge current
when the internal temperature reaches a typical value of +125°C.
When thermal foldback is encountered, the charge current will be
reduced to a value where the die temperature stops rising.
Figure 31 shows the thermal foldback concept whereas the
current signals at the summing node of the current error
amplifier CA are shown in Figure 30. I is the reference. I is the
Due to the inductance of the power leads of the wall adapter or
USB source, the input capacitor value must be properly selected
to prevent high voltage transient during a hot-plug event. Also, for
increase reliability to high dv/dt, a 10µF or more is preferable on
the input.
R
T
temperature tracking current generated from the Temperature
Monitoring block. The I has no impact on the charge current
T
until the internal temperature reaches approximately +125°C;
then I starts to rise. In the meantime, as I rises, I
will fall at
T
T
SEN
VOUT and VBAT Capacitor Selection
the same rate (as the sum is a constant current I ). As a result,
R
the charging current, which is proportional to I
, also
SEN
The criteria for selecting the capacitor at the VOUT and VBAT pins is
to maintain the stability as well as to bypass any transient load
current. The recommended capacitance is a 4.7µF X5R ceramic
capacitor for VOUT and 1µF for VBAT. The actual capacitance
connected to the output is dependent on the actual application
requirement.
decreases, keeping the die temperature constant at +125°C.
The system output current, however, is not impacted by the thermal
foldback. Thus, when the charge current is reduced to zero, if the die
temperature still rises, the IC will shut down at ~155°C to prevent
damage to the IC.
I
R
Layout Guidance
The ISL9230 uses a thermally-enhanced QFN package that has
an exposed thermal pad at the bottom side of the package. The
layout should connect as much copper to the pad as possible.
Typically, the component layer is more effective in dissipating
heat. The thermal impedance can be further reduced by using
other layers of copper connecting to the exposed pad through a
thermal via array. Each thermal via is recommended to have
0.3mm diameter and 1mm distance from other thermal vias.
I
T
I
SEN
-40mA/°C
Input Power Sources
The input power source is typically a well-regulated wall cube
with 1m length wire or a USB port. The recommended input
voltage ranges from 4.3V to 6.4V. The ISL9230 can withstand up
to 26V on the input without damaging the IC. If the input voltage
is higher than the OVP threshold, the IC is disabled.
TEMPERATURE
+125°C
FIGURE 31. THERMAL FOLDBACK CONCEPT
FN7642 Rev 2.00
September 22, 2011
Page 16 of 20
ISL9230
described above and the charger is OFF. This state is latched until
the input power is removed and re-applied to start a new cycle.
State Diagram
The state diagram is shown in Figure 32. There are 15 states to
cover all the operation modes, including the Power Down, Sleep,
Standby, ILIM, IREF check, VOUT check, Idle, VBAT check, Trickle
Charge, CC/CV charge, Charge Complete, Battery Detect-1,
Battery Detect-2, Battery Detect-3, Fault and Charging and
Suspend states.
At any time during the operation, if the die temperature reaches the
OTP threshold, the IC will enter the OTP state, where PG is LO, CHG
remains in previous state, and the charger is OFF. VOUT is
disconnected from VIN and connected to VBAT internally to maintain
system power need. When the die temperature reduces by T
,
SD-HYS
normal charging operation occurs and the device returns to thermal
regulation.
The IC flow chart starts by checking the voltage applied at VIN. If
V
V
< V < V
+ V , the IC stays in the Sleep state. If V
+
POR
OS
IN BAT
OS
BAT
< V < V , the IC pulls the PG pin low and moves into the
IN OVP
ILIM, IREF check state where the ILIM and IREF pins are being
checked for short circuit condition. If there is no short at either
pin, the regulator FET Q1 will regulate V
limit. Following this, the IC moves to the V
OUT
with 100mA current
check state where
is checked for short circuit condition. If V is below 0.9V,
OUT
OUT
V
OUT
indicating a V
short condition, the IC will stay at the V
OUT
check state. If V
OUT
is above 0.9V, the IC will set the input current
OUT
limit according to the setting on the AC/USB and the MODE pins.
The IC then checks the status of the CHGEN pin.
If the CHGEN is low, the IC moves to the V
BAT
short circuit check
state where a 5.5mA current is sourced at the VBAT pin and the
voltage is checked against the 1.8V threshold. If V is above
BAT
1.8V, the IC moves to the trickle charge state where the trickle
charge timer starts, the charge current is set to I
turned on to indicate charging is in progress.
and CHG is
TRK
When V
BAT
starts where the charge current is set by R
current limit, whichever is smaller. When V
BAT
reaches the V
threshold (3.0V typ), the fast charge
MIN
or by the IC’s input
reaches the V
IREF
BAT
regulated voltage (4.2V typ), the charger moves to constant
voltage mode where V is regulated at 4.2V. If the charge
BAT
current drops to below the EOC threshold, the CHG turns off to
indicate a charge complete condition. The charge current will be
terminated if the CONT pin is at logic low status. Recharge will
occur when V
drops below the recharge threshold which is
BAT
120mV below the regulated VBAT voltage.
There are 3 scenarios for fast charge depending on the output
current. When the sum of the output current and the fast charge
current is smaller than the input current limit, the IC enters the
Fast Charge state with the charge current set by R
. When the
IREF
sum of the output current and the fast charge current are greater
than the input current limit, the IC will enter the DPPM mode,
where the charging current is reduced to a point such that the
sum of output current and the charging current equals to the
input current limit. If the output current by itself is greater than
the programmed input current limit, the IC enters the battery
supplemental mode, where the battery is discharged to the
system to aid in meeting the output demand.
The output voltage, depending on V , is regulated at either
BAT
V
V
+ 225mV (when V
< 3.2V).
> 3.2V) or regulated at 3.4V (when
BAT
BAT
BAT
During the constant voltage mode, the output voltage is
regulated at V
encountered.
+ 225mV if the DPPM event is not
BAT
If the timeout limit is reached before reaching the Charge
Complete state, the IC enters the Charger Fault state, where PG
is LO, CHG is blinking once in 0.5S, V
is regulated as
OUT
FN7642 Rev 2.00
Page 17 of 20
September 22, 2011
START
IF VBAT < VMIN
AFTER 25ms
ANY TIME AFTER (A) WHEN
VIN < VPOR_F
CC/CV CHARGE (I)
/CHG = L
GO TO (N) IF tFAST ELAPSED
PWR DOWN (A)
/PG = HI-Z
/CHG = HI-Z
(/CHG = Hi-Z DURING
RECHARGE)
VBAT
REACHES
VB_REG AND
YES
VIN < VPOR
NO
?
NO
I
BAT = IFAST
Tj > TSD
Q1=OFF, Q2=ON
ENABLE tFAST
ANY STATE (EXCEPT (N)) AFTER
I
BAT < IEOC?
TURN OFF Q1
Q2 REMAINS ON
GO TO (O)
(B) WHEN VIN<VBAT + VOS
_F
SLEEP (B)
/PG = HI-Z
/CHG = HI-Z
YES
AFTER 25ms
Tj < TSD – TSD_HYS
DISABLE IBAT
TURN OFF Q2
DISABLE tFAST
/CHG = Hi-Z
AFTER 20ms
YES
VPOR < VIN
& VIN < VBAT + VOS
Q1=OFF, Q2=ON
?
TURN ON Q1 at
AC/USB, MODE
ENABLE THERMAL
LOOP
ANY STATE AFTER (C)
WHEN VIN > VOVP
NO
STANDBY (C)
/PG = HI-Z
SINK IDET (7.5mA)
/CHG = HI-Z
Q1=OFF, Q2=ON
FOR tDET (250ms)
YES
AFTER 50µs
VIN > VOVP?
CHARGE
COMPLETE (J)
/CHG = HI-Z
Q1 = ON AT
AC/USB, MODE
Q2 = OFF
AFTER 50µs
NO
/PG = L
VBAT < VRCH
FOR tRCH
NO
?
ILIM, IREF
CHECK (D)
YES
YES
ILIM OR IREF
PIN SHORTED?
SINK IDET (7.5mA)
FOR tDET (250ms)
BATTERY DETECTION-1
(K)
(BATT REMOVAL
DETECTION)
NO
TURN ON Q1 @
100mA
ANY STATE AFTER (E) WHEN
VOUT < VOSC1
VOUT CHECK (E)
/CHG = HI-Z
Q1 = ON @
100mA
FAULT (N)
YES
/CHG FLASHING AT 2Hz
Q1 = ON AT AC/USB,
MODE
VBAT > VMIN?
YES
RESET tFAST
VOUT < VOSC1
?
Q2 = ON
Q2 = OFF
NO
(BATTERY SUPPLEMENT MODE STILL
NO
AVAILABLE)
Q1 CURRENT
LIMIT SET BY AC/
USB AND MODE
Q2 = OFF
SWITCH VO_REG
TO VB_REG
+
ANY STATE AFTER (F) WHEN
/CHGEN = H
225mV (4.425V)
IDLE (F)
Q1 = ON @
AC/USB, MODE
Q2 = OFF
ENABLE
ITRK
FOR tDET
TO START WHEN /CHGEN TOGGLES
BATTERY DETECTION-2(L)
(BATT REMOVAL
YES
YES
/CHGEN = H?
NO
DETECTION)
ANY STATE AFTER (G)
WHEN
ANYTIME WHEN
Tj > TSD
VBAT CHECK
(G)
/CHG = Hi-Z
Q1 = ON @
AC/USB, MODE
TURN ON IBSC
VBAT< VBSC
SWITCH
VO_REG
NO
VBAT > VRCH
YES
?
G
VBAT < VBSC
NO
?
TO NORMAL
OPERATION
CHARGING SUSPENDED (O)
Q1 = OFF, Q2 = ON
/CHG REMAINS PREVIOUS
STATE
GO TO (N) IF tPRE HAS
BEEN ELAPSED
TURN OFF IBSC
RESET tPRE
SINK IDET (7.5mA)
FOR DET (250ms)
t
BATTERY DETECTION-3(M)
(BATT REMOVAL
TRICKLE (H)
/CHG = L
ENABLE THERMAL LOOP
SET /CHG = L
HALT tFAST
HALT tPRE
Tj > TSD
DETECTION)
I
BAT = ITRK
ENABLE TPRE
TURN OFF Q1
Q2 REMAINS ON
GO TO (O)
SWITCH
VO_REG
To NORMAL
OPERATION
YES
YES
VBAT<VMIN?
NO
NO
VBAT > VMIN?
G
Tj < TSD -TSD_HYS
AFTER 25ms
TURN ON Q1 AT
AC/USB, MODE
ENABLE
DISABLE ITRK
DISABLE tPRE
RESET tFAST
THERMAL LOOP
FIGURE 32. STATE DIAGRAM (CONT = L)
ISL9230
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make
sure you have the latest revision.
DATE
REVISION
FN7642.2
CHANGE
August 9, 2011
On page 5: under "Recommended Operating Conditions," changed value of "Operating Supply Voltage (VIN Pin)"
from "4.3V to 6.4V" to "4.3V to 6.25V".
June 10, 2011
May 27, 2011
FN7642.1
-Replaced IBAT with IFAST for fast charge operation discussion.
-Corrected CHG state to remain in previous state when die temp reaches an over-temp condition
-Changed:
Programmed Charge Current . . . . . . . . . . . . . . . . . . . . .200mA to 1500mA
To:
Programmed Fast Charge Current . . . . . . . . . . . . . . . . . 300mA to 1500mA
-Corrected "IVIN" label in Figure 10 to "IOUT" (was a duplicate)
On page 14:
-Corrected some references of IREF to IBAT and IMIN to IEOC
-Corrected some references of VOUT to VBAT
On page 15:
-In Equations 5 and 6, changed "ICHG" to "IFAST"
May 12, 2011
FN7642.0
Initial Release
Products
Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The Company's products
address some of the industry's fastest growing markets, such as, flat panel displays, cell phones, handheld products, and notebooks.
Intersil's product families address power management and analog signal processing functions. Go to www.intersil.com/products for a
complete list of Intersil product families.
*For a complete listing of Applications, Related Documentation and Related Parts, please see the respective device information page
on intersil.com: ISL9230
To report errors or suggestions for this datasheet, please go to: www.intersil.com/askourstaff
FITs are available from our website at: http://rel.intersil.com/reports/sear
© Copyright Intersil Americas LLC 2011. All Rights Reserved.
All trademarks and registered trademarks are the property of their respective owners.
For additional products, see www.intersil.com/en/products.html
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such
modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets 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
FN7642 Rev 2.00
Page 19 of 20
September 22, 2011
ISL9230
Package Outline Drawing
L16.3x3E
16 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE
Rev 0, 3/11
4X 1.50
3.00
A
6
12X 0.50
PIN #1
INDEX AREA
B
13
16
6
PIN 1
INDEX AREA
12
1
+0.10
- 0.15
1.70
9
4
(4X)
0.15
0.10 M C A B
8
5
16X 0.40±0.10
BOTTOM VIEW
TOP VIEW
16X 0.25
+0.07
- 0.05
4
SEE DETAIL “X”
5
0 . 2 REF
C
0.10 C
C
0.90 ±0.10
0 . 02 NOM.
0 . 05 MAX.
0.08
C
SIDE VIEW
DETAIL "X"
NOTES:
1. Dimensions are in millimeters.
Dimensions in ( ) for Reference Only.
(12X 0.50)
2. Dimensioning and tolerancing conform to ASME Y14.5m-1994.
3. Unless otherwise specified, tolerance : Decimal ± 0.05
(2.80 TYP) ( 1.70)
(16X 0.25)
4. Dimension applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
Tiebar shown (if present) is a non-functional feature.
5.
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.
(16X 0.60)
TYPICAL RECOMMENDED LAND PATTERN
FN7642 Rev 2.00
September 22, 2011
Page 20 of 20
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