WWW.Microsemi .COM LX13043 LX13043 LX13043 TM 1.0A Low Dropout Regulator PRODUCTION DATA SHEET DESCRIPTION KEY FEATURES Accurate Output Voltage The LX13043 positive voltage linear The LX13043 features on-chip Typical Dropout of 1.2V at 1.0A regulator is configured with a fixed trimming of the internal voltage Independent Thermal and Current 3.3V output, featuring low dropout, enabling precise output voltages. The Limit Protection tight line, load and thermal regulation. BiPolar output transistor has a low No Minimum Load Rqmt. for I OUT VOUT is controlled and predictable dropout voltage even at full output Tight Load Regulation (0.4%) as UVLO and output slew rate govern current (V < 1.2V typical 1.0A). DO Wide DC Supply: 4.5V to 10V the start-up phase. Output voltage overshoot is minimized Loop Stability Independent of The LX13043 regulator is stable for rapid supply rise times on V , such IN Output Capacitor Type with ceramic, tantalum or electrolytic as 5V / S ramp. 1mm Height SMT Power Package, 3x3mm Footprint capacitors typically 10F is sufficient Thermal and Short Circuit Current Package is Lead Free and RoHS Protection are integrated on-chip. in most applications. This provides Compliant designers with a flexible power Microsemis micro power package is JEDEC compliant with MO-229 and management solution. The regulator design is optimized meets the full RoHS initiative for Pb- APPLICATIONS free content. for system efficiency by consuming 5V to 3.3V Regulator minimal ground current and directing Hard Disk Drives, CD-ROMs quiescent current to the load. ADSL and Cable Modems IMPORTANT: For the most current data, consult MICROSEMIs website: WWW.Microsemi .COM PACKAGE DATA PACKAGE DATA LX13043 TM 1.0A Low Dropout Regulator PRODUCTION DATA SHEET ABSOLUTE MAXIMUM RATINGS PACKAGE PIN OUT Input Voltage (VIN)....................................................................................................13.5V Load Current............................................................................................Internally Limited N.C. 6 1 GND Power Dissipation ....................................................................................Internally Limited Short-Circuit Protection ........................................................................................Indefinite V 2 5 N.C. OUT Operating Junction Temperature................................................................................ 150C Storage Temperature Range.........................................................................-65C to 150C 3 4 V N.C. IN Peak Package Solder Reflow Temp. (40 seconds max. exposure) ................. 260C (+0,-5) LD PACKAGE (Top View) 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. RoHS / Pb-free 100% Matte Tin Lead Finish *HS Must be connected to GND or left floating (see pages 6 and 7 for details) THERMAL DATA N.C. No Internal Connection Plastic MO-229 6-Pin LD THERMAL RESISTANCE-JUNCTION TO TAB, 6C/W JT THERMAL RESISTANCE-JUNCTION TO AMBIENT, JA 25-50C/W (TYPICAL, DEPENDING ON MOUNTING / PCB LAYOUT) 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. can vary significantly depending on mounting technique. (See JA Application Notes Section: Thermal considerations) FUNCTIONAL PIN DESCRIPTION PIN NAME DESCRIPTION Positive unregulated supply input for the regulator. Bypass to GND with at least 10F of low ESR and ESL V IN capacitance. Common terminal for ground reference. The input and output bypass capacitors should be connected to this pin. GND In addition the tab on the LD package is also used for heat sinking the device. Regulator output. It is recommended to bypass to GND with at least 10F. Size your output capacitor to meet V the transient loading requirement. If you have a very dynamic load, a lower ESR capacitor will improve the OUT response to these load steps. OPERATING RATING LX13043 Parameter Symbol Units Min Typ Max Input Voltage V 4.5 10 V IN Load Current (with adequate heat sinking) I 1000 mA L Operating Junction Temperature T 140 C J Operating Rating: Conditions for which the device is intended to be functional but does not guarantee electrical characteristics meet the minimum / maximum limits. V to remain within 10% of nominal from 125 to 140C T OUT J Copyright 2005 Microsemi Page 2 Rev. 1.0, 2006-06-26 Integrated Products Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570