LX2203CLD Microchip

WWW.Microsemi .COM LLXX22220033 LX2203 TM Li-Ion Battery Charger PRODUCTION DATA SHEET DESCRIPTION KEY FEATURES Up to 1A charge current The LX2203 is a tiny linear battery The LX2203 charges the battery in Low drop out design charger for Lithium Ion or Lithium two phases: constant current and Reverse leakage protection Polymer batteries. The LX2203 constant voltage. A reduced current Linear thermal control loop includes built in MOSFET, accurate conditioning mode is provided for Pre-charge conditioning current and voltage regulation, reverse deeply discharged batteries. The Programmable Termination blocking protection, over temperature LX2203 automatically restarts if the Current control, and charge status indicator. battery voltage falls below the top-off Short Circuit protected The accurate programmable charge threshold. The LX2203 enters a low Small 3x3mm MLP package current and independent termination quiescent current sleep mode when current programming make it easy to power is removed. APPLICATIONS logically reprogram the charge current limit at any time. PDAs, MP3 Players Cell Phones Charging cradles IMPORTANT: For the most current data, consult MICROSEMIs website: WWW.Microsemi .COM PPAACCKKAAGGEE DDAATTAA LX2203 TM Li-Ion Battery Charger PRODUCTION DATA SHEET ABSOLUTE MAXIMUM RATINGS PACKAGE PIN OUT Supply Voltage (VIN)....................................................................................... -0.3V to 7V Input Signals (SHDN, EN,CMP) ...................................................................... -0.3V to 7V Battery Charging Current (I )....................................................................................1.2A BAT 1 10 BAT VIN Operating Junction Temperature................................................................... -40C to 150C 2 9 Storage Temperature Range.........................................................................-65C to 150C VIN BAT RoHS / Pb-free Peak Package Solder Reflow Temp(40 seconds max. exposure) ............260C (+0 -5) 3 8 CMP STAT 4 Connect Bottom to 7 CTP EN Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Power GND Ground. Currents are positive into, negative out of specified terminal. 56 GND CCP LD PACKAGE (Top View) THERMAL DATA RoHS / Pb-free 100% Matte Tin Lead Finish Plastic Micro Leadframe Package 10-Pin LD THERMAL RESISTANCE-JUNCTION TO AMBIENT, 49C/W JA Junction Temperature Calculation: T = T + (P x ). J A D JA The numbers are guidelines for the thermal performance of the device/pc-board system. All of the JA above assume no ambient airflow. FUNCTIONAL PIN DESCRIPTION Name Description Charging Output - This pin is wired to the positive terminal of the battery. (The negative battery terminal is wired BAT to GND.) Charge Current Programming Pin - A resistor (Rccp) is connected between this pin and GND. See application CCP section for programming information. CMP Compensation Pin Apply a 0.01F capacitor between CMP and VIN pins. Charge Termination Programming Pin A resistor (Rctp) is connected between this pin and GND See CTP application section for programming information. Enable - Applying a TTL compatible Hi signal enables the charger, a Low signal disables the charger and puts it EN in sleep mode. GND Common Ground. STAT Status - This pin is a logic low level when the battery is being charged. Pin can sink up to 5mA. VIN Voltage Input Supply Voltage. Must be greater than VBAT to charge. Copyright 2004 Microsemi Page 2 Rev. 1.0a, 2005-08-10 Integrated Products Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570