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LX1995-2CSG Datasheet(PDF) 2 Page - Microsemi Corporation |
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LX1995-2CSG Datasheet(HTML) 2 Page - Microsemi Corporation |
2 / 9 page LX1995 PRODUCTION DATA SHEET Microsemi Integrated Products Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 2 Miniature LED Driver Copyright © 2000 Rev. 1.1, 2005-07-07 TM ® ABSOLUTE MAXI MUM RATI NGS Supply Input Voltage ........................................................................-0.3V to 7.0V Feedback Peak Pulse Input Voltage (VFB) ..............................-0.3V to VIN + 0.3V Shutdown Input Voltage (V SHDN ) ........................................... -0.3V to VIN + 0.3V Switch Voltage (VSW) ........................................................................-0.3V to 30V Switch Current (ISW) ...................................................................................500mA Operating Temperature Range .........................................................-40 °C to 85°C Maximum Operating Junction Temperature ................................................ 125 °C Storage Temperature Range...........................................................-65 °C to 150°C Peak Package Solder Reflow Temp. (40 second max. 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 ERM A L DATA SG Plastic TSOT 5-Pin THERMAL RESISTANCE -JUNCTION TO AMBIENT, θJA 207 °C/W SE Plastic SOT-23 5-Pin THERMAL RESISTANCE -JUNCTION TO AMBIENT, θJA 191 °C/W Junction Temperature Calculation: TJ = TA + (PD x θJA). The θJA numbers are guidelines for the thermal performance of the device/pc-board system. All of the above assume no ambient airflow. PACKAGE PI N OUT 1 2 34 5 SW GND FB IN SHDN SG PACKAGE (Top View) IN SW FB GND 1 2 34 5 SHDN SE PACKAGE (Top View) RoHS / Pb-free 100% Matte Tin Lead Finish FUNCTIONAL PIN DESCRIPTION Name Description SW Inductor Switching Connection – Internally connected to the drain of a 28V N-channel MOSFET. SW is high impedance in shutdown. GND Common terminal for ground reference. FB Feedback Input – Connect to a current sense resistor between the load and GND to set the maximum output current. FB pin is regulated to 320mV. SHDN Active-Low Shutdown Input – A logic low shuts down the device and reduces the supply current to <1 µA. Connect SHDN to VCC for normal operation. IN Unregulated IC Supply Voltage Input – Input range from +2.0V to +5.5V. Bypass with a 1 µF or greater capacitor for low voltage operation. |
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