EL7563 INTERSIL [Intersil Corporation], EL7563 Datasheet
EL7563
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EL7563 Summary of contents
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... The minimal external components and full functionality make this EL7563 ideal for desktop and portable applications. The EL7563 is offered in 20-pin SO and 28-pin HTSSOP packages. Pinout EL7563 (20-PIN SO) ...
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... Note) (Pb-free) EL7563CMZ-T13 20-Pin SO (0.300”) (See Note) (Pb-free) EL7563CRE 28-Pin HTSSOP EL7563CRE-T7 28-Pin HTSSOP EL7563CRE-T13 28-Pin HTSSOP EL7563CREZ 28-Pin HTSSOP (See Note) (Pb-free) EL7563CREZ-T7 28-Pin HTSSOP (See Note) (Pb-free) EL7563CREZ-T13 28-Pin HTSSOP (See Note) (Pb-free) NOTE: Intersil Pb-free products employ special Pb-free material sets; ...
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... Output Temperature Stability FB_TC I Feedback Input Pull Up Current Input High Level EN_HI V EN Input Low Level EN_LO I Enable Pull Up Current EN 3 EL7563 = 25°C) Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C +0.3V Operating Ambient Temperature . . . . . . . . . . . . . . . .-40°C to +85°C IN +0.3V Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +135° ...
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... SYNC M Soft Start Slope SS t FET Break Before Make Delay BRM t High Side FET Minimum On Time LEB D Maximum Duty Cycle MAX Typical Application Diagrams R4 22Ω 330µ 3.3V 4 EL7563 3.3V CONDITIONS (Continued VREF 0.1µF 2 SGND ...
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... LOAD CURRENT I FIGURE 1. EL7563CM EFFICIENCY EL7563 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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... NOTE: The 28-Pin HTSSOP Package Offers Improved Performance V =3.3V IN 1.8 1.6 1.4 V =1.2V O 1.2 1 0.8 0.6 0.4 0 0.5 1 1.5 2 2.5 OUTPUT CURRENT I FIGURE 3. EL7563CM CONVERTER POWER LOSS =2.5V O 2.505 V 2.5 IN 2.495 2.49 2.485 2.48 2.475 2.47 2.465 0.5 1 1.5 2 2.5 LOAD CURRENT I FIGURE 5. EL7563CM LOAD REGULATION TEST CONDITION: CHIP IN THE CENTER OF COPPER AREA ...
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... Typical Performance Curves (20 Pin SO Package) NOTE: The 28-Pin HTSSOP Package Offers Improved Performance AIRFLOW 40 100 LFM 500 LPF (A) O FIGURE 9. EL7563CM JUNCTION TEMPERATURE RISE ON DEMO BOARD 360 350 340 I =4A O 330 320 310 I =0A O 300 290 280 -40 ...
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... ∆VIN ∆V O FIGURE 15. SWITCHING WAVEFORMS V =3.3V, V =1.8V, I =0. FIGURE 17. POWER-UP V =3.3V, V =1. FIGURE 19. ENABLE 8 EL7563 (Continued) V =3.3V, V =1.8V ∆V O FIGURE 16. TRANSIENT RESPONSE V =3.3V, V =1.8V FIGURE 18. POWER-DOWN V =3.3V, V =1. FIGURE 20. DISABLE =0 ...
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... NOTE: The 28-Pin HTSSOP Package Offers Improved Performance Block Diagram VTJ JUNCTION TEMPERATURE 2.2nF CONTROLLER SUPPLY 22Ω 3.3V 0.22µF EN STP POWER TRACKING STN SGND 9 EL7563 (Continued) V =3.3V, V =1.8V, I =4A TO SHORT FIGURE 21. SHORT-CIRCUIT PROTECTION 390pF 0.1µ REF OSC VOLTAGE ...
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... Applications Information Circuit Description General The EL7563 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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... Reference A 1.5% temperature compensated bandgap reference is integrated in the EL7563. The external V as the dominant pole of the amplifier and can be increased in size to maximize transient noise rejection. A value of 0.1µF is recommended. Oscillator The system clock is generated by an internal relaxation oscillator with a maximum duty-cycle of approximately 95%. ...
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... EL7563 STP 9 + STN - EL7563 8 STP 9 + STN - 10 12 EL7563 2. Offset Tracking The intended start-up sequence is shown in Figure 24. In this configuration, V value of × --------------------- - See Figure 23 ...
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... FIGURE 25. OFFSET TRACKING EL7563 STP STN - FIGURE 26. EXTERNAL SOFT START V O × × --------- TIME V OUT FN7296.2 May 13, 2005 ...
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... CRE package. Maximizing the copper area around these pins is preferable. In addition, a solid ground plane is always helpful for the EMI performance. The demo board is a good example of layout based on these principles. Please refer to the EL7563 Application Brief for the layout ...
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... SO Package Outline Drawing 15 EL7563 FN7296.2 May 13, 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 16 EL7563 FN7296.2 May 13, 2005 ...