Microsemi LX2207 0710 Three level lithium ion battery charger Datasheet

LX2207
®
TM
Three Level Lithium Ion Battery Charger
P RODUCTION D ATA S HEET
KEY FEATURES
DESCRIPTION
charge in progress, battery fully charged
and external power on. The STAT pin is
capable of sourcing or sinking 10mA.
The DCOK output is an open drain
output and can sink 20mA.
The LX2207 enters a low quiescent
current sleep mode when power is
removed or when it is logically
shutdown to minimize battery drain.
There are several protection features
which include: under voltage lock out,
reverse current blocking on the IN pin,
a thermal loop to reduce charge current
to maintain a low die temperature, an
unsafe battery temperature charge
inhibitor, and conditioning mode is
provided for deeply discharged
batteries.
ƒ Three charge levels for
adapter, and USB Hi and Low
ƒ 0.5% Float voltage tolerance
ƒ Charging up to 1A.
ƒ Charging from USB port.
ƒ USB current compliance
ƒ Full battery Indicator
ƒ CC/CV w thermal Feedback
ƒ Battery temp monitor
ƒ Precision charge termination
ƒ Power Good Indication
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The LX2207 can use a wall adapter
or USB power source to charge a
single cell Lithium Ion or Lithium
Polymer battery. There are three logic
selectable and programmable charge
current levels: the high charge
programming level is typically set for
charging from the adapter, the low
level charge programming level is
typically set to 500mA for USB full
USB charging and 100mA (20%) for
reduced level USB charging.
In addition to setting the high-level
charge current, the HCP programming
resistor also sets the termination
current at 10% of the constant current
level and the conditioning current at
5% of the constant current level.
Power status indicators (STAT and
DCOK) can be configured to show
APPLICATIONS
ƒ
ƒ
ƒ
ƒ
ƒ
MP3 player
PDA
PMC
Digital Camera
Charge Cradle
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PRODUCT HIGHLIGHT
LX2207
PACKAGE ORDER INFO
TA (°C)
LD
Plastic MLPD
12-Pin
RoHS Compliant / Pb-free
-40 to 85
LX2207ILD
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX2207ILD-TR)
Copyright © 2007
Rev. 1.0a, 2007-10-08
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
LX2207
®
TM
Three Level Lithium Ion Battery Charger
P RODUCTION D ATA S HEET
ABSOLUTE MAXIMUM RATINGS
PACKAGE PIN OUT
IN
1
12
BAT
CMP
2
11
TMP
STAT
3
10
HCP
DCOK
4
9
LCP
SD
5
8
H/L
20%
6
7
GND
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal.
LD Package
(Top View)
RoHS / Pb-free 100% matte Tin Finish
THERMAL DATA
Plastic Micro Leadframe Package 12-Pin
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
33°C/W
Junction Temperature Calculation: TJ = TA + (PD x θJA).
The θJA numbers are guidelines for the thermal performance of the device/pc-board system. All of the
above assume no ambient airflow.
2207
xxxx
MSC
LD
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Supply Input Voltage (IN, BAT) ...................................................................... -0.3V to 7V
All other pins ............................................................................................-0.3V to VSUPPLY
Battery Charging Current .............................................................................................1.1A
Operating Temperature Range .........................................................................-40 to 150°C
Maximum Operating Junction Temperature .............................................................. 150°C
Storage Temperature Range.........................................................................-65°C to 150°C
Peak Temp. for Solder Reflow (40 seconds maximum exposure).................. 260°C (+0 -5)
Part Marking
xxxx = Denotes date and
lot code Identification
FUNCTIONAL PIN DESCRIPTION
Pin #
BAT
12
Battery – Connect to a single cell Lithium Ion Battery.
CMP
2
Compensation – Connect a series combination of a 1k resistor and a 0.47µF capacitor from CMP to IN.
DCOK
4
Power status logic pin and LED driver – This pin is an open drain output that can sink 20mA of current to
drive an external LED. This pin is low impedance to GND when the Input voltage is high enough to charge
the Battery.
GND
7
Ground – Connect to the system ground.
HCP
10
High Current Programming (and Termination Current Programming) – Connect a resistor to ground to set the
constant current high level. The termination current is set to 1/10 of the High Current Programming Level.
For a value of 19.6k, the High Current is 460mA and the Termination Current is 46mA.
H/ L
8
High or Low load select logic input – A logic high selects the constant charge current level set by the HCP pin
resistor and a logic low selects the constant charge current level set by the LCP pin resistor
IN
1
Input Power – Connect to a wall adapter or a USB power plug.
LCP
9
Low Current Programming – Connect a resistor to ground to set the constant current low level.
For a value of 19.6k, the High Current is 460mA and the 20% current is 92mA.
SD
5
Shutdown – A logic high places the LX2207 in sleep mode; can also be used for USB suspend.
STAT
3
Charging status logic pin and LED driver – This pin can source or sink 10mA of current to drive an external
LED in either output state. This pin is low (current sinking mode) when the battery is in charging mode and
becomes high (current sourcing mode) when the charge cycle is finished. It becomes high impedance when
the input power is removed.
TMP
11
Battery Temperature Monitor – This sense pin determines the battery temperature for charging out of
temperature range lockout and is connected to a resistor network as defined in the Applications section. The
TMP pin is grounded if this function is not used.
20%
6
20% select logic input – When the low current level is selected by the H/L pin, a logic high on 20% selects the
constant charge current level set by the LCP pin resistor and a logic low selects 20% of this value.
Copyright © 2007
Rev. 1.0a, 2007-10-08
Description
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
PACKAGE DATA
Name
LX2207
®
TM
Three Level Lithium Ion Battery Charger
P RODUCTION D ATA S HEET
ELECTRICAL CHARACTERISTICS
` INPUT CIRCUITRY
Input Voltage
Battery Voltage
Under Voltage Charging Lockout
UVLO Hysteresis
Input Supply Current
`
VIN
VBAT
VIN UVLO
IIN
BATTERY CHARGER
Constant Voltage Charging
Constant Voltage Charging
HCP Bias Voltage
LCP Bias Voltage
Max Battery Charge Current
VBAT
VBAT
VHCP
VLCP
IBAT
Conditioning Current
Conditioning Current
Conditioning Current Threshold
Charge Termination Current
Charge Termination Current
Charge Termination Current
IBAT
ICOND
VBAT
IBAT
IBAT
IBAT
Top Off Charge Droop Threshold
VBAT
Battery Drain Current
IBAT
4.35
Rising input VBAT = 3.2V
3.5
VBAT = 4.2V; battery charged
SHDN = High
IBAT < 100mA
IBAT < 100mA @ 25C
IBAT > 100mA
4.16
4.18
HCP=12.1k
H/L = Low
H/L = Low, 20% = Low
VBAT < VCCT
VBAT < VCCT; HCP = 110k
Rising Battery Voltage
HCP = 19.6k
HCP = 110k
HCP = 210k
665
430
84
13
2.6
2.5
34
96
VBAT = 4.2V; battery charged
VBAT > VIN
SD = High (Shutdown Mode)
3.8
300
1
35
6
4.3
4
V
V
V
mV
mA
µA
2
50
4.2
4.2
1.25
1.25
710
460
92
23
4.6
2.7
46
9
5
4.24
4.22
V
V
V
V
mA
mA
mA
mA
mA
V
mA
mA
mA
97
98
1
5
1
30
30
5
µA
µA
µA
4.5
5
0.5
V
V
772
495
97
33
7.8
2.9
59
%
VBAT
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The following specifications apply over the operating ambient temperature -40°C ≤ TA ≤ 85°C except where otherwise noted and the
following test conditions:. IN = 5.0V; SD = Low; H/L = High, 20% = High; BAT = 3.6V; HCP =12.1k, LCP=19.6k; TMP = 0V.
LX2207
Parameter
Symbol
Test Conditions
Units
Min
Typ
Max
VCVL
` LOGIC
STAT Logic High Output
STAT Logic Low Output
VSTAT
VSTAT
Input Logic : SD, H/L, 20%
VLOG(IN)
Input Current : SD, H/L
ILOG(IN)
Input Current : 20%
I20%(IN)
VLOG(OUT)
Output Logic : DCOK
VIN = 5.0V, IDRV = -10mA
VIN = 5.0V, IDRV = 10mA
Logic Hi,
Logic Lo
Logic Hi, VLOG = 2V
Logic Lo, VLOG = 0V
Logic Hi, VLOG = 2V
Logic Lo, VLOG = 0V
Logic Hi, ILOG = 10k pullup to 3.3V
Logic Lo, ILOG = 20mA
4.2
1.2
0
-2
-2
-2
3.1
2
0
-0.8
-0.8
0.4
4
2
2
2
0.5
V
µA
uA
V
` BATTERY TEMPERATURE MONITOR
VCOLD
Hot Temp Fault Threshold
VHOT
TFB Disable Voltage
Temp Loop Regulation
VDIS
Copyright © 2007
Rev. 1.0a, 2007-10-08
Rising Threshold
Falling Threshold
Falling Threshold
Rising Threshold
75
130
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
0.75 x VIN
0.72 x VIN
0.28 x VIN
0.30 x VIN
100
140
150
150
V
V
V
V
mV
°C
ELECTRICALS
Cold Temp Fault Threshold
Page 3
LX2207
Three Level Lithium Ion Battery Charger
®
TM
P RODUCTION D ATA S HEET
SIMPLIFIED BLOCK DIAGRAM
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+
SD
ENABLE
DCOK
UVLO
STAT
TMP
CHARGE
CONTROL
BAT
IN
CHARGE
TERMINATION
CONTROL
CONSTANT
VOLTAGE
CONTROL
TEMPERATURE
CONTROL
CONDITIONING
THRESHOLD
H/L
COND.
CURRENT
20%
LCP
BLOCK DIAGRAM
HCP
LOW
CHARGING
CURRENT
HIGH
CHARGING
CURRENT
GND
Copyright © 2007
Rev. 1.0a, 2007-10-08
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 4
LX2207
®
TM
Three Level Lithium Ion Battery Charger
P RODUCTION D ATA S HEET
CONTROL LOGIC DIAGRAM
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RETURN TO START IF
VIN > VBAT, UVLO, SD, CHANGE STATE.
START
YES
SD
NO
VIN > VBAT
NO
SLEEP
YES
YES
UVLO
NO
VOLTAGE
MONITORING
MODE (STATE).
VBAT<97%
NO
YES
VBAT>60%
NO
CONDITION
CHARGE
MODE
CONSTANT VOLTAGE
CHARGE MODE
YES
CONSTANT CURRENT
CHARGE MODE
IMAX DETERMINED BY THE
STATE OF H/L, RHCP, RLCP
and 20%.
TEMP < 140
NO
REDUCE
CHARGE
CURRENT
YES
TEMP < 140
NO
YES
ICC < IMAX
NO
REDUCE
CHARGE
CURRENT
ICC< IMAX
NO
REDUCE
CHARGE
CURRENT
YES
REDUCE
CHARGE
CURRENT
NO
ITAPER DETERMINED BY
RHCP.
APPLICATIONS
IBAT<ITAPER
YES
YES
NO
VBAT> VCV
RETURN TO THE TOP
OF THE CHART.
YES
Copyright © 2007
Rev. 1.0a, 2007-10-08
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
LX2207
Three Level Lithium Ion Battery Charger
®
TM
P RODUCTION D ATA S HEET
APPLICATION CIRCUITS
Adapter or USB
Power Pin
1k
0.47u
H/L
Shutdown
SD
USB Hi/Low
20%
Control Logic
HCP
LX2207
LCP
12.1k
2.49k
Full
CMP
10k
Grounded Pin
in USB cable.
Leave open in
Adapter Cable.
STAT
IN
Charging
19.6k
DCOK
2.49k
Power On
121k
TMP
BAT
GND
Battery
Current
Programming
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Status
2.49k
24.9k
Battery
Temperature
Lockout
Sensing
Figure 1 – Typical Application – 750mA adapter charge current and 500mA or 100mA maximum
USB charge currents. A grounded spare pin in the USB power cable can be used to sense when
the 500mA USB current power source is being used. This application also uses three LED
indicators for Power attached, Battery Charging and Battery full. This configuration also
implements circuitry to lockout battery charging if the battery is less than 0C or greater than 60C.
APPLICATIONS
Copyright © 2007
Rev. 1.0a, 2007-10-08
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 6
LX2207
®
TM
Three Level Lithium Ion Battery Charger
P RODUCTION D ATA S HEET
THEORY OF OPERATION
GENERAL DESCRIPTION
CONDITIONING CURRENT CHARGE MODE
A conditioning current is applied to batteries that are
deeply discharged and have a terminal voltage less than
60% of the constant voltage level. The conditioning current
is 5% of the HCP programmable constant current level.
Once the battery terminal voltage exceeds the conditioning
current threshold, the full constant current level is applied
(unless one of the other charger control loops limits
charging current).
CHARGE TERMINATION MODE
To increase system battery life and avoid float charging,
the LX2207 turns off the pass element once the battery is
fully charged. The charge termination state occurs at the
end of constant voltage mode. The value of the resistor
connected to the HCP programming pin sets the
termination current. The STAT pin changes state when
charge cycle has completed.
TOP OFF CHARGE MODE
Once the charger has completed a charge cycle, if power
remains applied, the LX2207 enters a Voltage Monitoring
mode. In this mode the LX2207 monitors the battery
terminal voltage and applies a top off charge if the battery
voltage drops below the top of threshold.
USB CHARGE MODE AND CURRENT LIMIT
The LX2207 is fully compliant with, and supports, the
USB specifications – the Low Power Peripheral (100mA)
and High Power Peripherals (500mA). USB current levels
can be set using the appropriate values for the LCP
programming resistor. 20% logic input selects USB
high/low charge currents. When the SD pin is pulled high,
the USB input enters Suspend mode and will not present a
load to the IN pin.
DCOK
The IN input is monitored and DCOK is set to a logic
low to report the presence of the power source with
sufficient voltage to charge the battery. The DCOK
threshold is the larger of the UVLO threshold or the battery
voltage.
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The LX2207 charges a single cell Lithium Ion battery
using two steps: a constant current mode followed by a
constant voltage mode. The maximum charging current
during the Constant Current Mode of the charging profile
can be logically set (using H/L) to two preprogrammed
levels set by resistors connected to HCP and LCP (High
and Low current). A 20% logic input selects either the full
current set by the LCP resistor or 20% of that value. The
charger will terminate constant voltage charging once the
current drops below the taper current setting, which is 10%
of the high charge current setting (determined by HCP
resistor value).
PROTECTION FEATURES
Conditioning Current Mode – If the battery terminal
voltage is less than 2.7V, the battery charger will reduce the
charge current to 5%. This also protects the appliance from
overheating by trying to drive the full charging current into a
short circuited battery.
Under Voltage Lockout – The charge cycle will not start
until the IN voltage rises above 3.8V. Hysteresis helps
alleviate chattering on and off.
Thermal Control loop – If the power dissipation of the
charger becomes excessive, the charge current will be
reduced to prevent the die temperature from getting above
140°C. This does not cause the charge cycle to stop.
Reverse current blocking – If IN input is grounded,
current will not flow from the BAT pin through the charger.
No external blocking diode is required on the input.
Sleep Mode – If the SD pin is a logic high, the charger
enters a sleep mode where a very low quiescent current
prevents drain from the battery.
ADAPTER OR USB SELECTION
Copyright © 2007
Rev. 1.0a, 2007-10-08
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
APPLICATIONS
The LX2207 supports battery charging from a system that
provides adapter power or USB power using the same
external connector. Figure 1 shows one example of a
system using a special USB adapter cable to determine
whether the power source is USB or Wall Adapter.
Similarly, if the system processor senses the absence of
USB data, it can logically set the H/L logic level high for
the wall adapter.
Page 7
LX2207
®
TM
Three Level Lithium Ion Battery Charger
P RODUCTION D ATA S HEET
APPLICATION NOTE
Using the table below it can be seen that for a
programming current value of 11.4µA, the corresponding
maximum charge current is 92mA.
The termination current determines the point at which
the charge cycle is terminated and the battery is determined
to be fully charged. The termination current is determined
by the value of the HCP programming current as
determined by the HCP programming resistor. For a value
of IHCP = 11.4µA (as was used in the previous example),
the termination current from the chart below can be seen to
be 9mA.
Term ination Current vs IHCP
120
CURRENT PROGRAMMING RESISTORS
1.25
1.25
=
= 11.4µA
RHCP 110k
100
80
60
40
20
0
0.00
50.00
100.00
150.00
IHCP (in uA)
The termination current is always roughly 10% of the
maximum charge current set by the HCP resistor.
INDEPENDENT TERMINATION CURRENT PROGRAMMING
Charge Current vs IHCP (or ILCP)
1000
800
600
400
200
0
0.00
50.00
100.00
150.00
IHCP (in uA)
Copyright © 2007
Rev. 1.0a, 2007-10-08
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 8
APPLICATIONS
For applications where a termination current other than
10% is required, the termination current can be set using
the HCP resistor and the charge current can be set using
the LCP resistor. In this case, the H/L pin is held low so
that the HCP charge mode is never utilized. In this way
the HCP pin only programs the termination current and
conditioning current.
1200
Charge Current (in mA)
Termination Current (in mA)
The LX2207 has two programming resistors to control
the battery charging current during the constant current
charging mode of the battery charging cycle. When the
H/L pin is high (selecting the High Current charging mode),
the charge current is determined by the value of the HCP
programming resistor. The maximum charge current is
determined by the programming current at either the HCP
or LCP programming pins (depending on the state of H/L);
the range of each of these channels is identical. The
programming current is the HCP or LCP pin voltage
(typically 1.25V) divided by the value of the programming
resistor. For example, the HCP current with a 110k resistor
to GND is:
IHCP =
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LAYOUT
In the layout of the Printed Circuit Board (PCB) it is
important to provide a solid path from the IC power and
ground pins to the power and ground planes of the PCB to
provide a good conduction path for heat. This insures the
LX2207 stays cool and can provide the maximum charge
current to minimize the time required to charge the battery.
For stability, and to reduce turn on – turn off transients, it
is important to place capacitors close to the IN and BAT
pins. Use a 10uF capacitor (X5R or X7R dielectric) for this
purpose.
The CMP pin resistor and capacitor should be located
close to the CMP pin. The CMP pin is located next to the
IN pin to facilitate this. The 1K resistor is not required for
stability, but reduces the inrush current into the CMP pin
when the IN voltage transient is applied.
LX2207
®
TM
Three Level Lithium Ion Battery Charger
P RODUCTION D ATA S HEET
APPLICATION NOTE
To finish the design it is necessary to create the
Thevenin Voltage and resistance using a voltage
divider from the input pin (IN).
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BATTERY TEMPERATURE MONITOR
The LX2207 has an input to monitor the battery
temperature during battery charging; this method
assumes the battery pack contains a thermistor
expressly for this purpose. A typical Lithium ion battery
should only be charged from a range of 0°C to 60°C.
For this calculation, a Vishay NTHS0402N01N1003J
Thermistor was used. This thermistor is 327kΩ at 0°C,
100kΩ at 25°C and 24.9kΩ at 60°C. The thermistor
must be biased with a Thevenin voltage source and
series resistance to achieve the proper thresholds. A
fixed value resistor is added in series with the
thermistor to prevent it from becoming too low an
impedance at high temperatures and causing the TMP
input to default to off.
VIN
R1
TMP
RMIN
R2
RNTC
VTH
The values of R1 and R2 can be calculated as:
RTH
R1 =
TMP
R TH
= 122k
K
RMIN
R2 =
RNTC
Using a value of RMIN that is equal to the thermistor
temperature at 60°C works well; therefore, for this
example, set the value of RMIN to 24.9k. This has the
effect of adding 24.9k to the thermistor resistance
values so it becomes 352kΩ at 0°C, 125kΩ at 25°C and
49.8kΩ at 60°C.
R1 × R TH
= 14,800k
R1 − R TH
In this case, it is not necessary to use R2, because the
value is so large it is insignificant. In this case, R1 = RTH.
The final circuit for this example is:
VIN
121k
The equations for RTH and VTH are:
TMP
0.29 × 0.74 × (R T = 0C − R T = 60C )
VTH
=
VIN (0.29 × R T = 0C ) − (0.74 × R T = 60C )
24.9k
= K = 0.99
RNTC
The TMP voltages with this circuit are:
Where R at temperature is the sum of the thermistor
plus RMIN.
Copyright © 2007
Rev. 1.0a, 2007-10-08
APPLICATIONS
⎞
⎛ K
R TH = ⎜
− 1⎟ × R T = 0C = 121k
⎝ 0.74 ⎠
TEMP (°C)
-20
0
25
60
80
RNTC
971k
327k
100k
24.9k
12.6k
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
VTMP (%VIN)
89%
74%
51%
29%
24%
Page 9
LX2207
®
TM
Three Level Lithium Ion Battery Charger
P RODUCTION D ATA S HEET
APPLICATION NOTE
POWER STATUS INDICATORS
Conditions
STAT
Charge in process
Low
Charge completed
High
Adapter or USB
WWW . Microsemi .C OM
The STAT pin is designed to source or sink current.
LEDs can be configured to indicate charging or battery full.
The battery full indicator can be connected to DCOK rather
than GND to insure it is off when the input power is
removed and the STAT pin and DCOK pin go to a high
impedance state.
INPUT POWER SOURCE DETECTION
In order to detect when the input power source has been
removed, the LX2207 requires that a small current (up to
200uA) momentarily flow out of the IN pin (in the reverse
direction). Once detected, the reverse IN current is shut off
(the IN pin becomes a very high impedance until an input
power source is later reapplied). In most applications, there
is sufficient loading on the IN pin from external circuitry to
accomplish this, which includes the “Full” and/or “Power
On” LED loads and the TFB resistor string. If there is no
external load on the IN pin, then it is recommended to
provide a 15k resistor from IN to GND as shown below.
IN
CMP
1k
15k
LX2207
CHARGING PROFILE
CONDITIONING CURRENT
Battery Charging USB High Level
Conditioning Current vs IHCP
0.50
4.25
60
0.40
4.15
0.30
Ibat
4.10
0.25
4.05
0.20
0.15
4.00
0.10
3.95
B attery C u u ren t
0.35
Vbat
Conditioning Current (in mA)
0.45
4.20
B attery V o ltag e
0.47uF
0.05
3.90
0.00
0.0
60.0
120.0
50
40
30
20
10
0
0.00
50.00
100.00
150.00
IHCP (in uA)
Time in minutes
CHARTS
Copyright © 2007
Rev. 1.0a, 2007-10-08
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 10
LX2207
®
TM
Three Level Lithium Ion Battery Charger
P RODUCTION D ATA S HEET
CONSTANT CURRENT (USB LOW)
20% CHARGE RATIO
ADAPTER CHARGE CURRENT
CONDITIONING CURRENT
TERMINATION CURRENT
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CONSTANT VOLTAGE
CHART S
Copyright © 2007
Rev. 1.0a, 2007-10-08
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 11
LX2207
TM
®
P RODUCTION D ATA S HEET
COLD TMP THRESHOLDS (VIN = 5V)
Rising voltage:
HOT TMP THRESHOLDS (VIN = 5V)
Rising voltage:
WWW . Microsemi .C OM
Falling Voltage:
Three Level Lithium Ion Battery Charger
Falling Voltage:
CHARTS
Copyright © 2007
Rev. 1.0a, 2007-10-08
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 12
LX2207
Three Level Lithium Ion Battery Charger
®
TM
P RODUCTION D ATA S HEET
PACKAGE DIMENSIONS
LD
12-Pin Plastic MLP Dual Exposed Pad
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D
D2
L
K
E
E2
Pin 1 ID
A
e
MILLIMETERS
MIN MAX
0.80 1.00
0.00 0.05
0.20 REF
3.00 BSC
3.00 BSC
1.87 2.12
1.06 1.31
0.45 BSC
0.20 MIN
0.30 0.50
0.15 0.25
INCHES
MIN
MAX
0.031
0.039
0.000
0.002
0.008 REF
0.118 BSC
0.118 BSC
0.074
0.083
0.042
0.052
0.018 BSC
0.008 MIN
0.012
0.020
0.06
0.010
Note:
1.
Dimensions do not include mold flash or protrusions; these shall not exceed 0.155mm(.006”) on any side. Lead dimension shall
not include solder coverage.
Copyright © 2007
Rev. 1.0a, 2007-10-08
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 13
MECHANICALS
Dim
A
A1
A3
D
E
D2
E2
e
K
L
b
A3
A1
b
LX2207
TM
®
Three Level Lithium Ion Battery Charger
P RODUCTION D ATA S HEET
NOTES
WWW . Microsemi .C OM
NOTES
Copyright © 2007
Rev. 1.0a, 2007-10-08
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 14
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