el7564 Intersil Corporation, el7564 Datasheet
el7564
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el7564 Summary of contents
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... The minimal external components and full functionality make this EL7564 ideal for desktop and portable applications. The EL7564 is specified for operation over the -40°C to +85°C temperature range. Typical Application Diagrams EL7564 [20-PIN SO (0.300” ...
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... Note) (Pb-free) EL7564CMZ-T13 20-Pin SO (0.300”) (See Note) (Pb-free) EL7564CRE 28-Pin HTSSOP EL7564CRE-T7 28-Pin HTSSOP EL7564CRE-T13 28-Pin HTSSOP EL7564CREZ 28-Pin HTSSOP (See Note) (Pb-free) EL7564CREZ-T7 28-Pin HTSSOP (See Note) (Pb-free) EL7564CREZ-T13 28-Pin HTSSOP (See Note) (Pb-free) NOTE: Intersil Pb-free products employ special Pb-free material sets; ...
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... PGP V Negative Power Good Threshold PGN V Power Good Drive High PG_HI V Power Good Drive Low PG_LO V Over Voltage Protection OVP V Output Initial Accuracy (EL7564CM Output Initial Accuracy (EL7564CRE) V Output Line Regulation FB_LINE V Output Load Regulation FB_LOAD V Output Temperature Stability FB_TC I ...
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... FET Break Before Make Delay BRM t High Side FET Minimum On Time LEB D Maximum Duty Cycle MAX Typical Application Diagrams C5 0.1µF C4 390pF R4 22: C2 2.2nF 330µF 4 EL7564 5V 25° CONDITIONS (Continued) EL7654 (28-PIN HTSSOP) TOP VIEW 1 VREF SGND FB ...
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... LOAD CURRENT I FIGURE 1. EL7564CM EFFICIENCY 5 EL7564 Bandgap reference bypass capacitor; typically 0.1µF to SGND Control circuit negative supply or signal ground Oscillator timing capacitor (see performance curves) Control circuit positive supply; normally connected to VIN through an RC filter Junction temperature monitor; connected with 2.2nF to 3.3nF to SGND Ground return of the regulator ...
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... FIGURE 7. EL7564CM T vs COPPER AREA JA 6 EL7564 (Continued) V =3. =2. =1.8V O 2.5 3 3.5 4 (A) O FIGURE 4. EL7564CRE TOTAL CONVERTER POWER LOSS V =5. = =4. 3.5 4 (A) O WITH NO AIRFLOW 3 3 FIGURE 8. EL7564CRE THERMAL RESISTANCE vs PCB 1.8 1.6 1.4 V =3.3V O 1.2 1 0.8 0.6 0.4 0 0.5 1 1 =3. =4.5V IN 0 =5. ...
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... T (°C) J FIGURE 11. CURRENT LIMIT vs T 1.27 1.268 1.266 1.264 1.262 1.26 1.258 1.256 -50 - DIE TEMPERATURE (°C) FIGURE 13 DIE TEMPERATURE REF 7 EL7564 (Continued = 100 120 J 110 150 1000 900 800 700 600 500 400 300 200 100 ...
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... FIGURE 15. TRANSIENT RESPONSE V =5V, V =3.3V FIGURE 17. POWER-DOWN V =5V, V =3.3V FIGURE 19. SHUT-DOWN 8 EL7564 (Continued =5V, V =3.3V FIGURE 16. POWER-UP V =5V, V =3.3V FIGURE 18. RELEASING EN V =5V IN FIGURE 20 ...
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... TEMPERATURE Block Diagram V TJ JUNCTION TEMPERATURE 2.2nF CONTROLLER SUPPLY 22 0.22µF EN STP POWER TRACKING STN SGND FB 9 EL7564 (Continued) 100 125 150 FIGURE 22. PACKAGE POWER DISSIPATION vs AMBIENT 0.1µF 390pF V C REF OSC VOLTAGE OSCILLATOR REFERENCE POWER FET PWM DRIVERS CONTROLLER POWER ...
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... Applications Information Circuit Description General The EL7564 is a fixed frequency, current mode controlled DC/DC converter with integrated N-channel power MOSFETs and a high precision reference. The device incorporates all the active circuitry required to implement a cost effective, user-programmable 4A synchronous step- down regulator suitable for use in DSP core power supplies. ...
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... NMOS Power FETs and Drive Circuitry The EL7564 integrates low on-resistance (30m:) NMOS FETs to achieve high efficiency at 4A. In order to use an NMOS switch for the high-side drive it is necessary to drive the gate voltage above the source voltage (L accomplished by bootstrapping the V voltage with an external capacitor C VHI and diode ...
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... HI output forces the PWM controller to skip switching cycles EL7564 EL7564 EL7564 1. Linear Tracking In this application always the case that the lower voltage supply V C Figure 22 below OUT ...
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... STP 9 STN STP 9 STN 10 13 EL7564 reaches a preset EL7564 EL7564 FIGURE 25. OFFSET POWER TRACKING OUT C TIME FN7297.3 May 9, 2005 ...
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... FIGURE 26. OFFSET TRACKING EL7564 STP STN - FIGURE 27. EXTERNAL SOFT START --------- TIME V OUT FN7297.3 May 9, 2005 ...
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... PCB in order to dissipate heat out and away from the device. The conductive paths for the EL7564CM package are the fused leads 11, 12, and 13 sufficient amount of PCB metal area is connected to the fused package leads, a junction-to-ambient resistance of 43° ...
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... Package Outline Drawing - 20-Pin SO (0.300”) Package NOTE: The package drawing shown here may not be the latest version. To check the latest revision, please refer to the Intersil website at <http://www.intersil.com/design/packages/index.asp> 16 EL7564 FN7297.3 May 9, 2005 ...
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... 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 17 EL7564 FN7297.3 May 9, 2005 ...