lx2203 Microsemi Corporation, lx2203 Datasheet
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lx2203
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lx2203 Summary of contents
Page 1
... The LX2203 is a tiny linear battery charger for Lithium Ion or Lithium Polymer batteries. The LX2203 includes built in MOSFET, accurate current and voltage regulation, reverse blocking protection, over temperature control, and charge status indicator. The accurate programmable charge ...
Page 2
... 49qC/W MBIENT Description Microsemi Integrated Products Division LX2203 Li-Ion Battery Charger RODUCTION ATA HEET VIN 1 VIN 2 STAT 3 Connect Bottom to ...
Page 3
... Logic Logic < V BAT BAT VIN V UVLO+ V UVLO- Microsemi Integrated Products Division LX2203 D S RODUCTION ATA HEET 70qC except where otherwise A LX2203 Units Min Typ Max 4. 1.25 1.25 4.16 4.2 4. 0.9 1.0 1 4.5 0.5 2.0 0.8 ...
Page 4
... 1400 1200 1000 800 600 400 200 0 Microsemi Integrated Products Division LX2203 Li-Ion Battery Charger RODUCTION ATA HEET 4.0 8.0 12.0 Iccp Current (µA) V Post Trim Bat Volt mA 16 ...
Page 5
... ENABLE UVLO CHARGE CONTROL CONSTANT VOLTAGE CONTROL TEMPERATURE CONTROL CONSTANT CURRENT CONTROL Figure 1 – Simplified Block Diagram Microsemi Integrated Products Division LX2203 D S ATA HEET STAT BAT CHARGE CTP TERMINATION CONTROL Page 5 ...
Page 6
... TM LX2203 CONTROL FLOW DIAGRAM START YES V > UVLO YES V > BAT YES NO V >60% BAT YES CONSTANT CURRENT CHARGE MODE NO 150 TEMP < YES NO V > V BAT CV YES Copyright ¤ 2004 Rev. 1.0a, 2005-08-10 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 ® ...
Page 7
... LX2203 STAT CMP CTP EN 2.7k CCP GND 150k 90.9k VIN BAT VIN BAT LX2203 STAT CMP CTP EN CCP GND 150k BSS138DW-7 IBAT CP1 CP2 100mA L L 500mA Microsemi Integrated Products Division LX2203 D S ATA HEET 0.01uF + 0.01uF + 243k 165k 1.21M Page 7 ...
Page 8
... It is important to provide a low thermal impedance path from the thermal pad on the bottom of the LX2203 package to the ground plane of the circuit board to maximize the heat dissipation. To minimize charge time it is best not to rely on the thermal control feature as this feature will extend the charging time when activated. Copyright ¤ ...
Page 9
... For Vcc = 3.3V and Rsw = 243k 649k 392k. These values should provide charge currents of 100mA and . 500mA C OMPENSATION CAPACITOR A compensation capacitor of value 0.01uF is required between the CMP pin and V Microsemi Integrated Products Division LX2203 Li-Ion Battery Charger RODUCTION ATA HEET CCP Vcc ...
Page 10
... MIN MAX MIN MAX A 0.80 1.00 0.0315 0.0394 A1 0 0.05 0 0.0019 A3 0.20 REF 0.0079 REF b 0.18 0.30 0.0071 0.0118 D 3.00 BSC 0.1181 BSC D2 2.23 2.48 0.0878 0.0976 e 0.50 BSC 0.0197 BSC E 3.00 BSC 0.1181 BSC E2 1.49 1.74 0.0587 0.0685 L 0.30 0.50 0.0071 0.0197 Microsemi Integrated Products Division LX2203 D S ATA HEET L Bot View D2 A3 Page 10 ...
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... Microsemi reserves the right to change the configuration and performance of the product and to discontinue product at any time. Copyright ¤ 2004 Rev. 1.0a, 2005-08-10 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Li-Ion Battery Charger ® P RODUCTION Microsemi Integrated Products Division LX2203 D S ATA HEET Page 11 ...