LX2206 EVAL KIT

LX2206 EVALUATION BOARD USER GUIDE LX2206 DUAL LEVEL BATTERY CHARGER ® TM Copyright © 2002 Rev. 1.0, 2006-05-02 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 1 LX2206 EVALUATION BOARD USER GUIDE TABLE OF CONTENTS Introduction ............................................................................................................................................................ 3 Schematic .............................................................................................................................................................. 4 IC Block Diagram ................................................................................................................................................... 5 Evaluation Board Connections............................................................................................................................... 6 Typical Test Hookup .............................................................................................................................................. 7 PCB Layout Recommendations............................................................................................................................. 7 Evaluation Board Layout........................................................................................................................................ 8 Evaluation Board Bill of Materials .......................................................................................................................... 9 Copyright © 2002 Rev. 1.0, 2006-05-02 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 2 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 750mA. 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 ƒ ƒ ƒ ƒ MP3 player PDA PMC Digital Camera Charge cradle PART SPECIFIC INFORMATION Part Number LX2206ILD Product 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. 1.0, 2006-05-02 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 3 LX2206 EVALUATION BOARD USER GUIDE SCHEMATIC FOR LX2206 EVALUATION BOARD STATUS R6 2.5k PWR C1 10uF C3 0.47u 1 2 6 GND IN 7 L TMP HCP LCP I PGM R3 2.5k 4 R7 FULL BAT GND 9 10 POWER ATTACHED R8 121k 2.5k R9 Not Used R10 24.9k Battery Temperature Lockout Sensing BP R2 1.00k OFF LX2206 DCOK SD 8 3 CMP H/L 5 R1 1.00k H STAT CHARGING NTC RT1 ON RTN SHUTDOWN R5 19.6k R4 121k Current Programming BAT TEMP BAT+ C2 10uF RTN BATTERY Figure 1 – LX2206 Evaluation Board Schematic Copyright © 2002 Rev. 1.0, 2006-05-02 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 4 LX2206 EVALUATION BOARD USER GUIDE BLOCK DIAGRAM + SD ENABLE DCOK UVLO STAT TMP CHARGE CONTROL BAT IN CHARGE TERMINATION CONTROL CONSTANT VOLTAGE CONTROL TEMPERATURE CONTROL CONDITIONING THRESHOLD H/L COND. CURRENT LCP HCP LOW CHARGING CURRENT HIGH CHARGING CURRENT GND Figure 2 – Simplified Block Diagram Copyright © 2002 Rev. 1.0, 2006-05-02 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 5 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 Input Power PWR 5V +/- 0.65V Input RTN GND 0V Battery + BAT+ 0V to 4.3V 5) Monitor the charge current into the battery with a current probe. Battery - RTN 0V 6) Verify that the current changes levels between approximately 92mA and 460mA when the I PGM jumper is moved between its two positions. 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. 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. Hookup: The following is a demonstration scenario that can be used to evaluate the LX2206. 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. 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. 1.0, 2006-05-02 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 6 LX2206 EVALUATION BOARD USER GUIDE LX2206 TYPICAL TEST HOOKUP BAT TEMP NTC 3 R2 C1 C3 R6 R3 R7 GND 5V Power Supply R8 R10 R9 R5 R4 LX2206 PWR + R1 STATUS CHARGING FULL SHUTDOWN I PGM 1 31 + RT1 C2 Single Cell Lithium Ion Battery 1 BAT+ RTN - BATTERY INTEGRATED PRODUCTS RTN L H ON OFF POWER 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 Copyright © 2002 Rev. 1.0, 2006-05-02 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. Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 7 LX2206 EVALUATION BOARD USER GUIDE LX2206 PRINTED CIRCUIT BOARD LAYOUT BAT TEMP NTC R1 LX2206 PWR C1 R2 C3 R6 R3 R7 GND STATUS CHARGING FULL SHUTDOWN I PGM 1 31 R9 R5 R4 3 R8 R10 RT1 C2 BATTERY 1 BAT+ RTN INTEGRATED PRODUCTS RTN L H ON OFF POWER ATTACHED LX2206 DUAL LEVEL LITHIUM-ION BATTERY CHARGER EVAL PCB Figure 4 – LX2206 Evaluation Board Layout Copyright © 2002 Rev. 1.0, 2006-05-02 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 8 LX2206 EVALUATION BOARD USER GUIDE LX2206 EVALUATION BOARD BILL OF MATERIALS MISCELLANEOUS COMPONENTS Line Item 1 2 3 4 5 6 7 8 9 10 11 Part Description Microsemi IC – Dual Level Li-Ion Charger LED - Amber LED - Red LED - Green Thermistor – NTC, 100k 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 Manufacturer & Part # MICROSEMI LX2206ILD PANASONIC LNJ414K8YRA PANASONIC LNJ214K8ARA PANASONIC LNJ314G8TRA VISHAY NTHS0402N01N1003J OST OST/2/7.0 MICROSEMI Case 3x3 MLP 0603 0603 0603 0402 Reference Designators U1 CHARGING FULL POWER ATTACH RT1 BATTERY I PGM, SHUTDN BAT TEMP PWR, GND I PGM, SHUTDN SGE#3541 X1 Qty 1 1 1 1 1 1 2 1 2 2 1 CAPACITORS Line Item 1 2 Part Description Capacitor, X5R, 10uF, 10V, 10% Capacitor, X7R, 0.47uF, 16V, 20% Part Number Case Reference Designators Qty TAIYO YUDEN LMK316BJ106KD-T TAIYO YUDEN EMK212BJ474KD-T 1206 0805 C1,2 C3 2 1 Case Reference Designators Qty 0805 0805 0805 0805 0805 R1,2 R3,6,7 R4,8 R5 R10 2 3 2 1 1 RESISTORS Line Item 1 2 3 4 5 Part Description Resistor, 1.00K, 1%, 1/10W Resistor, 2.49K, 1%, 1/10W Resistor, 121K, 1%, 1/10W Resistor, 19.6K, 1%, 1/10W Resistor, 24.9K, 1%, 1/10W Copyright © 2002 Rev. 1.0, 2006-05-02 Part Number PANASONIC PANASONIC PANASONIC PANASONIC PANASONIC ERJ-6ENF1001V ERJ-6ENF2491V ERJ-6ENF1213V ERJ-6ENF1962V ERJ-6ENF2492V Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 9