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參數(shù)資料
| 型號： | LX2208ILD-TR |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO12 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, PLASTIC, MLPD-12 |
| 文件頁數(shù)： | 4/11頁 |
| 文件大小： | 250K |
| 代理商： | LX2208ILD-TR |
LX2208
PRODUCTION DATA SHEET
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
WWW
.Microse
m
i
.CO
M
2 Amp Three Level Lithium Ion Battery Charger
TM
LL
XX
22
00
88
Copyright
2007
Rev. 1.0, 2007-04-03
ABSOLUTE MAXIMUM RATINGS
Supply Input Voltage (IN, BAT) ...................................................................... -0.3V to 7V
All other pins ............................................................................................-0.3V to VSUPPLY
Battery Charging Current .............................................................................................2.5A
Operating Ambient Temperature Range (TA) ..................................................-40 to 125°C
Maximum Operating Junction Temperature .............................................................. 150
°C
Storage Temperature Range.........................................................................-65
°C to 150°C
Lead Temperature (Soldering 10 seconds)................................................................. 300
°C
Peak Temp. for Solder Reflow (40 seconds maximum exposure).................. 260°C (+0 -5)
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.
TH ERMAL DATA
LD
Plastic Micro Leadframe Package 12-Pin
THERMAL RESISTANCE
-JUNCTION TO AMBIENT,
θ
JA
33
°C/W*
Junction Temperature Calculation: TJ = TA + (PD x θJA).
*The
θ
JA numbers are guidelines for the thermal performance of the device/pc-board system. All of
the above assume no ambient airflow. See layout guidelines section for important details.
PACKAGE PIN OUT
CMP
H/L
GND
DC OK
1
2
3
4
58
9
10
11
12
IN
STAT
BAT
LCP
HCP
TMP
20%
6
7
SD
2208
XX
MSC
LD Package
(Top View)
RoHS / Pb-free 100% matte Tin Pin Finish
FUNCTIONAL PIN DESCRIPTION
Name
Pin
Description
BAT
12
Output, Battery Connection – This pin is wired to the positive terminal of a single cell Lithium Ion/Polymer battery.
CMP
2
Input, Compensation – Connect a series combination of a 1k resistor and 0.47F capacitor from IN to CMP.
OK
DC
4
Output, Power status logic pin and LED driver – This pin is an open drain output that can sink 10mA of current to
drive an external LED. This pin is low impedance to GND when the IN pin input voltage is high enough to charge
the battery.
GND
7
Common Ground – Used as chip ground and as a reference for the battery return.
HCP
10
Input, High Current Programming and Termination Current Programming – A resistor (RHCP) between this pin and
GND sets the constant current high level. The following relationship determines the charging current of constant
current mode: Typically IBAT=7150/RHCP when H/ L is high. The termination current is set to 1/10 of the HCP
current level, and the conditioning current is set to 1/20 of the HCP current level.
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 RHCP and a logic low selects the constant charge current level set by the LCP pin resistor RLCP.
IN
1
Input Power – Connect to a wall adapter or a USB port.
LCP
9
Input, Low Current Programming – A resistor (RLCP) between this pin and GND sets the constant current low
level. The following relationship determines the charging current of constant current mode: Typically
IBAT=7150/RLCP when H/ L is low and 20% is high.
SD
5
Input, Shutdown – A logic high places the LX2208 in shut down mode; it can also be used for USB suspend
mode.
STAT
3
Output, Charging status logic pin and LED driver – This pin can source or sink 5mA of current to drive an external
LED in either output state. This pin is low when the battery is in charging mode and becomes high when the
charge cycle is finished. It becomes high impedance when the input power is removed.
TMP
11
Input, Battery Temperature Monitor – This sense pin determines the battery temperature. It is connected to a
resistor network as defined in the application note. When the TMP pin falls below 29% (typ) of VIN or rises above
74% (typ) of VIN it suspends charging. Ground the TMP pin if it is not used.
20%
6
20%
Select logic input – This pin is only monitored when the H/ L pin is low. A logic high on 20% pin selects the
constant charge current level set by the LCP pin resistor RLCP. A logic low selects 20% of the constant charge
current level set by the LCP pin resistor RLCP .
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