E-L4971D STMicroelectronics, E-L4971D Datasheet
E-L4971D
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E-L4971D Summary of contents
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... The device is available in plastic dual in line, DIP8 for standard assembly, and SO16W for SMD as- sembly ...
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... E/A output to be used for frequency compensation Stepdown feedback input. Connecting directly to this pin results in an output voltage of 3.3V. An external resistive divider is required for higher output voltages. (*) Pins 10, 15 and 16 are not internally, electrically connected to the die. 2/13 VOLTAGES MONITOR INTERNAL INTERNAL ...
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... Table 3. Absolute Maximum Ratings Symbol Minidip S016 V V Input voltage Output DC voltage 5 6 Output peak voltage 0.1µs f=200KHz Maximum output current Bootstrap voltage Analogs input voltage ( Analogs input voltage ( 20V Power dissipation a Tamb ≤60°C P tot T ,T Junction and storage temperature ...
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... SVRR E/A Supply voltage ripple rejection DC open loop gain gm Transconductance Oscillator Section Ramp Valley Ramp peak Maximum duty cycle Maximum Frequency 4/13 = 24V, unless otherwise specified.) CC from 0 to 125°C j Duty Cycle = <0.9V inh Vcc = 55V; Vinh<0.9V Vcc = 8 to 55V V = 2.5V ...
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... Figure 4. Test and valuation board circuit. Vi=8V to 55V 220µF 220nF 63V C1=220µF/63V EKE C2=2.7nF C5=100nF C6=100nF C7=220nF/63V C8=330µF/35V CG Sanyo L1=126µH KoolMu 77120 - 65 Turns - 0.5mm R1=20K R2=9.1K D1=STPS3L60U Figure 5. PCB and component layout of the figure 4. Efficiency Line Regulation V =35V (%) 86 (%) 93 (%) 3mV ( 20K ...
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... D97IN724 100KHz R =20K 1 C =2.7nF 2 0Hz Vcc(V) Figure 10. Line Regulation D97IN731 200KHz R =22K 1 C =1.2nF 2 =20K 1 =2.7nF 2 0Hz Tj(˚C) Figure 11. Switching frquency vs. R1 and C2 D97IN732 Tj=125˚C ( (V) 3.377 Tj=125˚C 3.376 3.375 Tj=25˚C 3.374 3.373 3.372 3.371 3.370 (V) V 3.378 CC 3 ...
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... V Figure 13. Switching frequency vs. junction temperature. fsw (KHz) 105 100 Figure 14. Dropout voltage between pin 5 and 4 ∆ V (V) 0.5 0.4 0.3 0.2 0.1 0.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 I Figure 15. Efficiency vs output voltage. D97IN735 Tj=25˚C (V) CC Figure 16 ...
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... 8/13 Figure 21. Power dissipation vs. Vcc. Pdiss D97IN740 (mW) V =8V CC 800 600 400 fsw=200KHz V =5.1V 200 O 0 (A) O Figure 22. Efficiency vs. V D97IN741 fsw=200KHz V =3.36V O (A) O Figure 23. Pulse by pulse limiting current vs. . D97IN742 ( =5.1V O fsw=100KHz I =1. Pdiss (mW) V =35V CC fsw=100KHz 800 I =1.5A O 600 400 I =0 ...
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... Figure 26. Soft start capacitor selection Vs inductor and Vccmax. L 680nF (µH) fsw=100KHz 400 300 200 100 Figure 27. Soft start capacitor selection vs. Figure 28. Open loop frequency and phase of D97IN786 V O (mV 100 = 100KHz 0 -100 D97IN745 470nF 330nF 220nF 100nF (V) CCmax Inductor and Vccmax L (µ ...
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... L4971 Figure 29. DIP8 Mechanical Data & Package Dimensions mm DIM. MIN. TYP. MAX. A 3.32 a1 0.51 B 1.15 1.65 b 0.356 0.55 b1 0.204 0.304 D 10.92 E 7.95 9.75 e 2.54 e3 7.62 e4 7.62 F 6.6 I 5.08 L 3.18 3.81 Z 1.52 10/13 inch MIN. TYP. MAX. 0.131 0.020 0.045 0.065 0.014 ...
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... L 0.40 1.27 k 0˚ (min.), 8˚ (max.) ddd 0.10 (1) “D” dimension does not include mold flash, protusions or gate burrs. Mold flash, protusions or gate burrs shall not exceed 0.15mm per side. inch MIN. TYP. MAX. 0.093 0.104 0.004 0.012 ...
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... L4971 4 REVISION HISTORY Table 7. Revision History Date Revision October 2004 May 2005 12/13 10 First Issue in EDOCS 11 Updated the Layout look & feel. Changed name of the D1 on the figs. 1 and 4. Description of Changes ...
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