LX2207
PRODUCTION DATA SHEET
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
Copyright © 2007
Rev. 1.0a, 2007-10-08
WWW.Microsemi .COM
Three Level Lithium Ion Battery Charger
TM
®
ABSOLUTE MAXIMUM RATINGS
Supply Input Voltage (IN, BAT) ...................................................................... -0.3V to 7V
All other pins ............................................................................................-0.3V to V
SUPPLY
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)
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
.
THERMAL DATA
LD
Plastic Micro Leadframe Package 12-Pin
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θ
JA
33°C/W
Junction Temperature Calculation: T
J
= T
A
+ (P
D
x θ
JA
).
The θ
JA
numbers are guidelines for the thermal performance of the device/pc-board system. All of the
above assume no ambient airflow.
PACKAGE PIN OUT
BAT
TMP
HCP
LCP
GND
SD
STAT
CMP
IN
20%
DCOK
H/L
1
2
3
4
5
67
8
9
10
11
12
LD Package
(Top View)
RoHS / Pb-free 100% matte Tin Finish
2207
xxxx
MSC
Part Marking
xxxx = Denotes date and
lot code Identification
FUNCTIONAL PIN DESCRIPTION
Name Pin # Description
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.
P
P
A
A
C
C
K
K
A
A
G
G
E
E
D
D
A
A
T
T
A
A
