LX1684CD-TR MICROSEMI [Microsemi Corporation], LX1684CD-TR Datasheet
LX1684CD-TR
Related parts for LX1684CD-TR
LX1684CD-TR Summary of contents
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... Ohm Optional 12V only circuit T (° Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1684CD-TR) Copyright © 2000 Rev. 1.0c, 2005-03-08 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Voltage-Mode PWM Controller ® ...
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Supply Voltage (V ) ...................................................................................... 18V C1 Supply Voltage (V ...
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TM Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C otherwise noted. Test conditions: V =5V Parameter REFERENCE Reference Voltage OSCILLATOR Frequency Ramp Amplitude ERROR AMPLIFIER Input Resistance CURRENT SENSE Current Set V TRIP ...
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Com VCSP RESET TRIP SET 320k 20k 1 - Error Com plifier RESET Com pensation V REF R SS Hiccup Hiccup ...
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TM GENERAL DESCRIPTION The LX1684 is a voltage-mode pulse-width modulation controller integrated circuit. The internal oscillator and ramp generator frequency is fixed at 175kHz. The devices have internal compensation, so that no external compensation is required. POWER UP AND INITIALIZATION ...
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TM OUTPUT INDUCTOR The output inductor should be selected to meet the requirements of the output voltage ripple in steady-state operation and the inductor current slew-rate during transient. The peak-to-peak output voltage ripple is: V ESR = RIPPLE where ( ...
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TM SOFT-START CAPACITOR (continued) The capacitor current to follow the SS-pin voltage is OUT = = OUT OUT where C is the output capacitance. The typical value of C OUT should be ...
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TM FET SELECTION (continued) Synchronous Rectification – Lower MOSFET The lower pass element can be either a MOSFET or a Schottky diode. The use of a MOSFET (synchronous rectification) will result in higher efficiency, but at higher cost than using ...
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TM R1 300 Ohm R2 Css 100 Ohm 0.1µF Figure 3 R1 150 Ohm R2 Css 50K Ohm 0.1µF C3 Panasonic EEF-UE0D271R 270uF 3A 15mOhm ESR C4 Panasonic EEF-UE0J151R 150uF 3A 18mOhm ESR Copyright © 2000 Rev. 1.0c, 2005-03-08 11861 ...
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TM EFFICENCY VS. OUTPUT CURRENT 1.00 0.95 0.90 0.85 0.80 0.75 0. Output Current (A) OUTPUT VOLTAGE VS. TEMPERATURE 3.34 3.33 3.32 3.31 3.30 3.29 3. Temperature (°C) OUTPUT VOLTAGE ...
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Note: 1. Dimensions do not include mold flash or protrusions; these shall not exceed 0.155mm(.006”) on any side. Lead dimension shall not include solder coverage. Copyright © 2000 Rev. 1.0c, 2005-03-08 11861 Western ...
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TM PRODUCTION DATA – Information contained in this document is proprietary to Microsemi and is current as of publication date. This document may not be modified in any way without the express written consent of Microsemi. Product processing does not ...