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LX2202 Datasheet(PDF) 2 Page - Microsemi Corporation |
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LX2202 Datasheet(HTML) 2 Page - Microsemi Corporation |
2 / 12 page LX2202 PRODUCTION DATA SHEET Microsemi Integrated Products Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 2 Copyright © 2004 Rev. 1.0a, 2006-02-09 2A Li-Ion Linear Charger and Power Control TM ® ABSOLUTE MAXIMUM RATINGS Supply Voltage (VUSB or VDD ) ..........................................................-0.3V to 7V Analog Input Signals (VIDx, VM, SNS) .............................................-0.3V to 7V Battery Charging Current (IBAT).........................................................................2A Discharge Current (IVDD)....................................................................................3A Operating Junction Temperature.................................................................. 150 °C Storage Temperature Range...........................................................-65 °C to 150°C USB Maximum DC Current .......................................................................500mA USB Maximum Surge Current...........................................................................2A RoHS / Pb-free Peak Package Solder Reflow Temperature (40 second 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 . TH ERMAL DATA LQ Plastic Micro Lead Frame Quad Package 20-Pin THERMAL RESISTANCE -JUNCTION TO AMBIENT, θ JA 40 °C/W Junction Temperature Calculation: TJ = TA + (PD x θJA). 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 VDD VDD VDD VDD USB CMP BAT BAT BAT NU 1 6 11 16 2 3 4 5 78 9 10 12 13 14 15 17 18 19 20 Pad Is GND LQ PACKAGE (Top View) RoHS / Pb-free 100% Matte Tin Lead Finish FUNCTIONAL PIN DESCRIPTION Name Description BAT Charging Output - This pin is wired to the positive terminal of the battery. (The negative battery terminal is wired to GND.) CCP Charge Current Programming Pin - A resistor (RCP) is connected between this pin and GND. The constant current is determined by the following relationship: CCP ) MAX ( BAT R 73200 I = CMP Compensation Pin – Connect a 0.1µF compensation capacitor from this pin to VDD. CTP Charge Termination Programming Pin – A resistor (RTP) is connected between this pin and GND. The termination charge current is determined by the following relationship: CTP ) MIN ( BAT R 5250 I = CUS Maximum USB Current Programming Pin – A resistor (RUS) is connected between this pin and GND. The Hi Level charge current is determined by the following relationship: USB ) HIGH ( USB R 1211 I = GND Common Ground NU This pin is floating and will not affect performance. PSW PMOS Switch driver – This output is designed to drive the gate of an external PMOS power switch. The driver is pulled low (PMOS on state) when VDD > VBAT. VDD Common Power Node – Connects to system power bus. VIDx State Select Input – Applying a two bit TTL compatible signal sets the desired state of the charger corresponding to the Truth Table. USB Voltage Input – Current limited USB input. Apply a USB compliant power input. VM Voltage Mode Select - Selects the constant voltage charge level. Wired to USB for 4.1V and GND for 4.2V. STAT Status - This pin is a logic high level when the battery is being charged. A low signal indicates either under voltage lockout, charge completed, or VBAT > VDD, or VID0 = VID1 = 0. |
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