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(R) EL7516 Data Sheet May 4, 2004 FN7333.1 PRELIMINARY 600kHz/1.2MHz PWM Step-Up Regulator The EL7516 is a high frequency, high efficiency step-up voltage regulator operated at constant frequency PWM mode. With an internal 1.5A, 200m MOSFET, it can deliver up to 600mA output current at over 90% efficiency. The selectable 600kHz and 1.2MHz allows smaller inductors and faster transient response. An external compensation pin gives the user greater flexibility in setting frequency compensation allowing the use of low ESR Ceramic output capacitors. When shut down, it draws < 10A of current and can operate down to 2.5V input supply. These features along with 1.2MHz switching frequency makes it an ideal device for portable equipment and TFT-LCD displays. The EL7516 is available in an 8-pin MSOP package with a maximum height of 1.1mm. The device is specified for operation over the full -40C to +85C temperature range. Features * > 90% efficiency * 1.6A, 200m power MOSFET * VIN > 2.5V * 600kHz/1.2MHz switching frequency selection * Adjustable soft-start * Internal thermal protection * 1.1mm max height 8-pin MSOP package * Pb-free Available Applications * TFT-LCD displays * DSL modems * PCMCIA cards * Digital cameras * GSM/CDMA phones Pinout EL7516 (8-PIN MSOP) TOP VIEW COMP 1 FB 2 SHDN 3 GND 4 8 SS 7 FSEL 6 VDD 5 LX * Portable equipment * Hand-held devices Ordering Information PART NUMBER EL7516IYZ (See Note) EL7516IYZ-T7 (See Note) EL7516IYZ-T13 (See Note) PACKAGE 8-Pin MSOP (Pb-free) 8-Pin MSOP (Pb-free) 8-Pin MSOP (Pb-free) TAPE & REEL 7" 13" PKG. DWG. # MDP0043 MDP0043 MDP0043 NOTE: Intersil Pb-free products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which is compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J Std-020B. 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright (c) Intersil Americas Inc. 2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc. All other trademarks mentioned are the property of their respective owners. EL7516 Absolute Maximum Ratings (TA = 25C) LX to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18V VDD to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6V COMP, FB, SHDN, SS, FSEL to GND . . . . . . -0.3V to (VDD +0.3V) Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65C to +150C Operating Ambient Temperature . . . . . . . . . . . . . . . .-40C to +85C Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +135C CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA Electrical Specifications PARAMETER IQ1 IQ2 IQ3 VFB IB-FB VDD DMAX-600kHz DMAX-1.2MHz ILIM ISHDN RDS-ON ILX-LEAK VOUT/VIN VOUT/IOUT FOSC1 FOSC2 VIL VIH GM AV VDD-ON VDD-OFF ISS RCS VIN = 3.3V, VOUT = 12V, IOUT = 0mA, FSEL = GND, TA = 25C unless otherwise specified. CONDITIONS SHDN = 0V SHDN = VDD, FB = 1.3V SHDN = VDD, FB = 1.0V 1.272 MIN TYP 0.6 0.7 1.3 1.294 0.01 2.6 FSEL = 0V FSEL = VDD 84 84 1.3 SHDN = 0V VDD = 2.7V, ILX = 1A VSW = 18V 3V < VIN < 5.5V, VOUT = 12V VIN = 3.3V, VOUT = 12V, IO = 30mA to 200mA FSEL = 0V FSEL = VDD 500 1000 90 90 1.5 0.01 0.2 0.01 0.1 6.7 620 1250 740 1500 0.5 2.7 I = 5A 90 130 350 2.40 2.20 4 2.51 2.30 6 0.08 2.60 2.40 8 170 3 0.1 2 1.309 0.5 5.5 MAX 10 UNIT A mA mA V A V % % A A A % mV/A kHz kHz V V 1/ V/V V V A V/A DESCRIPTION Quiescent Current - Shut-down Quiescent Current - Not Switching Quiescent Current - Switching Feedback Voltage Feedback Input Bias Current Start-Up Input Voltage Range Maximum Duty Cycle Maximum Duty Cycle Current Limit - Max Peak Input Current Shut-down Input Bias Current Switch ON Resistance Switch Leakage Current Line Regulation Load Regulation Switching Frequency Accuracy Switching Frequency Accuracy SHDN, FSEL Input Low Level SHDN, FSEL Input High Level Error Amp Tranconductance Voltage Gain VDD UVLO On Threshold VDD UVLO Off Threshold Soft-start Charge Current Current Sense Transresistance 2 EL7516 Block Diagram FSEL SHDN SS VDD REFERENCE GENERATOR OSCILLATOR SHUTDOWN & START-UP CONTROL LX PWM LOGIC CONTROLLER COMPARATOR FET DRIVER CURRENT SENSE GND FB GM AMPLIFIER COMP Pin Descriptions PIN NUMBER 1 2 3 4 5 6 7 8 PIN NAME COMP FB SHDN GND LX VDD FSEL SS DESCRIPTION Compensation pin. Output of the internal error amplifier. Capacitor and resistor from COMP pin to ground. Voltage feedback pin. Internal reference is 1.263V nominal. Connect a resistor divider from VOUT. VOUT = 1.26V (1 + R1 / R2). See Typical Application Circuit. Shutdown control pin. Pull SHDN low to turn off the device. Analog and power ground. Power switch pin. Connected to the drain of the internal power MOSFET. Analog power supply input pin. Frequency select pin. When FSEL is set low, switching frequency is set to 600kHz. When connected to high or VDD, switching frequency is set to 1.2MHz. Soft-start control pin. Connect a capacitor to control the converter start-up. Typical Application Circuit R3 3.9k C5 4.7nF 1 COMP R1 85.2k R2 10k 2 FB 3 SHDN 4 GND SS 8 FSEL 7 VDD 6 LX 5 C3 27nF C2 + C1 22F 10H + C2 22F 12V 2.7V TO 5.5V 0.1F D1 3 EL7516 Typical Performance Curves 95 LOAD REGULATION (%) 0 100 200 IOUT (mA) 300 400 0.6 0.4 EFFICIENCY (%) 90 0.2 0 -0.2 -0.4 -0.6 -0.8 85 80 75 -1 0 50 100 150 200 250 300 350 IOUT (mA) FIGURE 1. EFFICIENCY - 3.3V VIN TO 12V VOUT @ 1.3MHz FIGURE 2. LOAD REGULATION - 3.3V VIN TO 12V VOUT @ 1.3MHz 90 LOAD REGULATION (%) 0 100 200 IOUT (mA) 300 400 1 EFFICIENCY (%) 0.5 85 0 80 -0.5 75 -1 0 50 100 150 200 250 300 350 IOUT (mA) FIGURE 3. EFFICIENCY - 3.3V VIN TO 12V VOUT @ 620kHz FIGURE 4. LOAD REGULATION - 3.3V VIN TO 12V VOUT @ 620kHz 95 90 EFFICIENCY (%) 85 80 75 70 LOAD REGULATION (%) 0 100 200 300 400 500 1 0.5 0 -0.5 -1 0 100 200 300 400 500 IOUT (mA) IOUT (mA) FIGURE 5. EFFICIENCY - 3.3V VIN TO 9V VOUT @ 1.2MHz FIGURE 6. LOAD REGULATION - 3.3V VIN TO 9V VOUT @ 1.2MHz 4 EL7516 Typical Performance Curves (Continued) 90 LOAD REGULATION (%) 0 100 200 300 400 500 1 0.6 0.2 -0.2 -0.6 -1 EFFICIENCY (%) 85 80 75 0 100 200 300 400 500 IOUT (mA) IOUT (mA) FIGURE 7. EFFICIENCY - 3.3V VIN TO 9V VOUT @ 600kHz FIGURE 8. LOAD REGULATION - 3.3V VIN TO 9V VOUT @ 600kHz 95 LOAD REGULATION (%) 0 100 200 300 IOUT (mA) 400 500 600 0.8 0.6 EFFICIENCY (%) 90 0.4 0.2 1 -0.2 -0.4 -0.6 -0.8 85 80 75 -1 0 100 200 300 IOUT (mA) 400 500 600 FIGURE 9. EFFICIENCY - 5V VIN TO 12V VOUT @ 1.2MHz FIGURE 10. LOAD REGULATION - 5V VIN TO 12V VOUT @ 1.2MHz 92 LOAD REGULATION (%) 100 200 400 0.8 0.6 EFFICIENCY (%) 90 0.4 0.2 1 -0.2 -0.4 -0.6 -0.8 88 86 84 0 300 IOUT (mA) 500 600 -1 0 100 200 300 IOUT (mA) 400 500 600 FIGURE 11. EFFICIENCY - 5V VIN TO 12V VOUT @ 600kHz FIGURE 12. LOAD REGULATION - 5V VIN TO 12V VOUT @ 600kHz 5 EL7516 Typical Performance Curves (Continued) 95 LOAD REGULATION (%) 0 400 800 1K 0.6 0.4 EFFICIENCY (%) 90 0.2 0 -0.2 -0.4 -0.6 -0.8 85 80 75 200 600 -1 0 200 400 600 800 1K IOUT (mA) IOUT (mA) FIGURE 13. EFFICIENCY - 5V VIN TO 9V VOUT @ 1.2MHz FIGURE 14. LOAD REGULATION - 5V VIN TO 9V VOUT @ 1.2MHz 0.2 VOUT=12V IOUT=80mA LINE REGULATION (%) 1.2MHz 0.1 VOUT=8V IOUT=80mA 1.2MHz LINE REGULATION (%) 0.1 0.05 0 600kHz -0.1 0 600kHz -0.05 -0.2 2 3 4 VIN (V) 5 6 -0.1 2.5 3.5 4.5 VIN (V) 5.5 6.5 FIGURE 15. LINE REGULATION FIGURE 16. LINE REGULATION 95 600kHz 90 EFFICIENCY (%) 85 1.2MHz 80 75 70 10 LOAD REGULATION (%) 0.5 1.2MHz 0.3 0.1 -0.1 -0.3 -0.5 600kHz 110 210 310 IOUT (mA) 410 510 610 0 100 200 300 IOUT (mA) 400 500 600 FIGURE 17. EFFICIENCY vs IOUT - 3.3V TO 8V FIGURE 18. LOAD REGULATION - 3.3V TO 8V 6 EL7516 Typical Performance Curves (Continued) 94 92 FREQUENCY (MHz) 90 EFFICIENCY (%) 88 86 84 82 80 78 76 0 200 400 600 IOUT (mA) 600kHz 800 1K 1.2K 1.2MHz 1.29 1.28 1.27 1.26 1.25 1.24 1.23 1.22 1.21 1.2 2.5 3 3.5 4 VIN (V) 4.5 5 5.5 FIGURE 19. EFFICIENCY vs IOUT FIGURE 20. FREQUENCY (1.2MHz) vs VIN 670 660 FREQUENCY (kHz) 650 640 630 620 610 600 2.5 3 3.5 4 VIN (V) 4.5 5 5.5 EFFICIENCY (kHz) 93 91 89 87 85 83 81 0 200 400 600 800 1K IOUT (mA) FIGURE 21. FREQUENCY (600kHz) vs VIN FIGURE 22. EFFICIENCY - 5V VIN TO 9V VOUT @ 600kHz 0.4 LOAD REGULATION (%) VIN = 3.3V VOUT = 12V IOUT = 50mA TO 300mA 0.2 0 200mV/DIV -0.2 -0.4 0 200 400 600 800 1K 0.1ms/DIV IOUT (mA) FIGURE 23. LOAD REGULATION - 5V VIN TO 9V VOUT @ 600kHz FIGURE 24. TRANSIENT REPONSE - 600kHz 7 EL7516 Typical Performance Curves (Continued) 1 POWER DISSIPATION (W) VIN = 3.3V VOUT = 12V IOUT = 50mA TO 300mA 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0.1ms/DIV JEDEC JESD51-7 HIGH EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD 870mW JA = 200mV/DIV M SO 11 P8 5 C/ W 0 25 50 75 85 100 125 AMBIENT TEMPERATURE (C) FIGURE 25. TRANSIENT RESPONSE - 1.2MHz FIGURE 26. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE 0.6 POWER DISSIPATION (W) 0.5 JEDEC JESD51-3 LOW EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD 486mW 0.4 0.3 0.2 0.1 0 JA = M SO P8 20 6 C/ W 0 25 50 75 85 100 125 AMBIENT TEMPERATURE (C) FIGURE 27. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation's quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 8 |
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