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LX838585A85B-05 Datasheet(PDF) 8 Page - Microsemi Corporation |
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LX838585A85B-05 Datasheet(HTML) 8 Page - Microsemi Corporation |
8 / 11 page PRODUCTION DATA SHEET Microsemi Inc. Integrated Products Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 8 Copyright © 2000 Rev. 2.0b, 2005-10-25 LX8385x-xx 3A Low Dropout Positive Regulators TM ® TY PICAL APPLICATIONS 10µF LX8385x R1 121Ω 1% R2 365Ω 1% IN ADJ OUT FIGURE 4 - IMPROVING RIPPLE REJECTION V IN V OUT C1 10µF* 150µF + + * C1 improves ripple rejection. X C should be R1 at ripple frequency. (Note A) ≈ C1* 10µF LX8385x R1 121Ω 1% R2 1k IN ADJ OUT FIGURE 5 - 1.2V - 8V ADJUSTABLE REGULATOR V IN V OUT** C2 100µF + + * Needed if device is far from filter capacitors. ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ + = R1 R2 1 1.25V *V * OUT (Note A) 10µF 365Ω 1% LX8385x 100µF 1k 1k 121Ω 1% 2N3904 IN ADJ OUT FIG URE 6 - 5V REGULATOR W ITH SHUTDOW N TTL Output V IN 5V + + (note A) LX8385x IN ADJ OUT FIGURE 7 - FIXED 3.3V OUTPUT REGULATOR V IN 3.3V 10µF Tantalum or 100µF Alum inum Min. 15µF Tantalum or 100µF Alum inum capacitor. May be increased without lim it. ESR m ust be less than <400m Ω . Note A: X) DROPOUT(MA OUT IN(MIN) V ) V ( V Intended + = |
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