LX2206
EVALUATION BOARD USER GUIDE
LX2206 DUAL LEVEL BATTERY
CHARGER
®
TM
Copyright © 2002
Rev. 1.1, 2006-11-17
Microsemi
Page 1
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
LX2206
EVALUATION BOARD USER GUIDE
INTRODUCTION TO PRODUCT
The LX2206 Evaluation Board is available from Microsemi for evaluating the performance of the LX2206 Battery Charger
integrated circuit. The component sizes used on the evaluation board facilitate easy probing, however, in practice, smaller
component sizes are recommended to minimize the circuit physical size.
KEY FEATURES
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
Two independent programmable charge currents
0.5% Float voltage tolerance
Charging up to 1A.
Charging from USB port.
USB current compliance
Full battery Indicator
CC/CV w thermal Feedback
Battery temp monitor
Precision charge termination
Power Good Indicator
APPLICATIONS
ƒ MP3 player
ƒ PDA
ƒ PMC
ƒ Digital Camera
ƒ Charge cradle
PART SPECIFIC INFORMATION
Part Number
Product
LX2206ILD
Dual Level Lithium Ion Battery Charger
TABLE 1 – PART INFORMATION
IC
EVALUATION BOARDS
LX2206ILD
LX2206 EVAL KIT
TABLE 2 – EVALUATION BOARD INFORMATION
Copyright © 2002
Rev. 1.1, 2006-11-17
Microsemi
Integrated Products
Page 3
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
LX2206
EVALUATION BOARD USER GUIDE
SCHEMATIC FOR LX2206 EVALUATION BOARD
STATUS
R6
2.49k
CHARGING
FULL
R3
2.49k
3
4
1
2
C3
0.47u
IN
STAT
PWR
C1
CMP
H/L
POWER
ATTACHED
10uF
6
5
R7
GND
DCOK
LX2206
R8
2.49k
121k
SD
9
R1
1.00k
Battery
Temperature
Lockout
TMP
BAT
8
7
H
HCP
LCP
R9
10
Not
Used
R10
24.9k
L
GND
BP
Sensing
I PGM
R2
NTC
RTN
1.00k
OFF
RT1
ON
SHUTDOWN
BAT TEMP
R5
19.6k
R4
110k
Current
Programming
BAT+
RTN
C2
10uF
BATTERY
Figure 1 – LX2206 Evaluation Board Schematic
Copyright © 2002
Rev. 1.1, 2006-11-17
Microsemi
Page 4
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
LX2206
EVALUATION BOARD USER GUIDE
BLOCK DIAGRAM
-
+
SD
ENABLE
DCOK
STAT
UVLO
TMP
IN
CHARGE
CONTROL
BAT
CHARGE
TERMINATION
CONTROL
CONSTANT
VOLTAGE
CONTROL
TEMPERATURE
CONTROL
CONDITIONING
THRESHOLD
H/L
COND.
CURRENT
LCP
LOW
CHARGING
CURRENT
HCP
GND
HIGH
CHARGING
CURRENT
Figure 2 – Simplified Block Diagram
Copyright © 2002
Rev. 1.1, 2006-11-17
Microsemi
Page 5
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
LX2206
EVALUATION BOARD USER GUIDE
and the Negative terminal to the RTN
terminal.
LX2206 EVAL CONNECTIONS
Connections: The LX2206 Evaluation Board has
one power input and one power output connection.
2) Apply a +5V power source to the PWR
terminal and the power supply return to the
GND terminal.
3) Move the SHUTDOWN jumper to the ON
position.
VOLTAGE
FUNCTION PIN NAME
4) The POWER ATTACHED and CHARGING
LEDs should be lit when the battery is
charging and the POWER ATTACHED and
FULL LEDs should be lit when the battery is
fully charged.
Input Power
Input RTN
Battery +
Battery -
PWR
GND
BAT+
RTN
5V +/- 0.65V
0V
0V to 4.3V
0V
5) Monitor the charge current into the battery
with a current probe.
6) Verify that the current changes levels
between approximately 92mA and 460mA
when the I PGM jumper is moved between
its two positions.
Jumpers: The LX2206 Evaluation Board has two
position jumper blocks. The jumper can be moved to
select either a high logic level or low logic level. It is
also possible to remove the jumper and apply a
voltage directly to the center pin of the jumper block.
7) Verify that moving the SHUTDOWN battery
to the OFF position extinguishes the LEDs
and terminates the charge cycle.
8) The thermal lockout can be tested by
removing RT1 and replacing it with a
variable resistor to simulate the resistance of
RT1 under extreme hot and cold conditions.
Hookup: The following is a demonstration scenario
that can be used to evaluate the LX2206.
1) Apply the single cell Lithium Ion or Lithium
polymer battery to the battery screw terminal
block. Be sure to connect the positive
terminal of the battery to the BAT+ terminal
Copyright © 2002
Rev. 1.1, 2006-11-17
Microsemi
Page 6
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
LX2206
EVALUATION BOARD USER GUIDE
LX2206 TYPICAL TEST HOOKUP
BAT TEMP
NTC
RTN
RT1
INTEGRATED PRODUCTS
-
Single Cell
Lithium Ion
Battery
L
R1
R2
H
+
LX2206
ON
PWR
OFF
+
GND
5V Power
Supply
FULL
STATUS
POWER
CHARGING
ATTACHED
LX2206 DUAL LEVEL LITHIUM-ION
BATTERY CHARGER EVAL PCB
-
Figure 3 – LX2206 Typical Test Hookup
PCB LAYOUT RECOMMENDATIONS
It is recommended that C1 and C2 be located within
1cm of the LX2206. The CMP capacitor should be
located close to the IN and CMP pins. Also the high
impedance summing node connecting to the TMP pin
should be kept relatively short to prevent the coupling
of noise into this node. It is important that the LX2206
have a good thermal path to ambient to dissipate
heat. The simplest way to do this is to heatsink the
LX2206 bottom pad directly to the ground plane by
placing 4 or more vias in the ground pad directly
under the LX2206 footprint.
Copyright © 2002
Rev. 1.1, 2006-11-17
Microsemi
Page 7
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
LX2206
EVALUATION BOARD USER GUIDE
LX2206 PRINTED CIRCUIT BOARD LAYOUT
BAT TEMP
NTC
RTN
RT1
INTEGRATED PRODUCTS
L
R1
R2
H
LX2206
ON
PWR
OFF
GND
FULL
STATUS
POWER
CHARGING
ATTACHED
LX2206 DUAL LEVEL LITHIUM-ION
BATTERY CHARGER EVAL PCB
Figure 4 – LX2206 Evaluation Board Layout
Copyright © 2002
Rev. 1.1, 2006-11-17
Microsemi
Page 8
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
LX2206
EVALUATION BOARD USER GUIDE
LX2206 EVALUATION BOARD BILL OF MATERIALS
MISCELLANEOUS COMPONENTS
Line
Item
1
2
3
4
5
Reference
Part Description
Manufacturer & Part #
Case
Qty
Designators
Microsemi IC – Dual Level Li-Ion Charger
LED - Amber
3x3 MLP
0603
0603
0603
0402
U1
1
1
1
1
1
MICROSEMI
PANASONIC
PANASONIC
PANASONIC
LX2206ILD
CHARGING
FULL
POWER ATTACH
RT1
LNJ414K8YRA
LNJ214K8ARA
LNJ314G8TRA
LED - Red
LED - Green
Thermistor – NTC, 100k
VISHAY
NTHS0402N01N1003J
6
7
8
9
10
11
Terminal Block 2 position/ 7mm spacing
Header 3 pin 0.100in spacing
Header 2 pin 0.100in spacing
Header 1 pin
Jumper, 2 Pos, 0.100 inch spacing
Printed Circuit Board
BATTERY
I PGM, SHUTDN
BAT TEMP
PWR, GND
I PGM, SHUTDN
1
2
1
2
2
1
OST
OST/2/7.0
MICROSEMI
SGE#3541 X1
CAPACITORS
Line
Item
1
Reference
Designators
C1,2
Part Description
Part Number
Case
Qty
Capacitor, X5R, 10uF, 10V, 10%
Capacitor, X7R, 0.47uF, 16V, 20%
1206
0805
2
1
TAIYO YUDEN LMK316BJ106KD-T
TAIYO YUDEN EMK212BJ474KD-T
2
C3
RESISTORS
Line
Item
Reference
Designators
Part Description
Part Number
Case
Qty
1
2
3
4
5
6
Resistor, 1.00K, 1%, 1/10W
Resistor, 2.49K, 1%, 1/10W
Resistor, 110K, 1%, 1/10W
Resistor, 19.6K, 1%, 1/10W
Resistor, 121K, 1%, 1/10W
Resistor, 24.9K, 1%, 1/10W
0805
0805
0805
0805
0805
0805
R1,2
R3,6,7
R4
R5
R8
2
3
1
1
1
1
PANASONIC
PANASONIC
PANASONIC
PANASONIC
PANASONIC
PANASONIC
ERJ-6ENF1001V
ERJ-6ENF2491V
ERJ-6ENF1103V
ERJ-6ENF1962V
ERJ-6ENF1213V
ERJ-6ENF2492V
R10
Copyright © 2002
Rev. 1.1, 2006-11-17
Microsemi
Page 9
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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