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TPS76427 Datasheet(PDF) 11 Page - Texas Instruments |
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TPS76427 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 18 page TPS76425, TPS76427, TPS76428, TPS76430, TPS76433 LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS SLVS180B – MARCH 1999 – REVISED MAY 2001 11 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 APPLICATION INFORMATION external capacitor requirements Although not required, a 0.047- µF or larger ceramic bypass input capacitor, connected between IN and GND and located close to the TPS764xx, is recommended to improve transient response and noise rejection. A higher-value electrolytic input capacitor may be necessary if large, fast-rise-time load transients are anticipated and the device is located several inches from the power source. Like all low dropout regulators, the TPS764xx requires an output capacitor connected between OUT and GND to stabilize the internal loop control. The minimum recommended capacitance value is 4.7 µF and the ESR (equivalent series resistance) must be between 0.2 Ω and 10 Ω. Capacitor values 4.7 µF or larger are acceptable, provided the ESR is less than 10 Ω. Solid tantalum electrolytic, aluminum electrolytic, and multilayer ceramic capacitors are all suitable, provided they meet the requirements described above. Most of the commercially available 4.7 µF surface-mount solid tantalum capacitors, including devices from Sprague, Kemet, and Nichico, meet the ESR requirements previously stated. Multilayer ceramic capacitors should have minimum values of 1 µF over the full operating temperature range of the equipment. CAPACITOR SELECTION PART NO. MFR. VALUE MAX ESR† SIZE (H × L × W)† T494B475K016AS KEMET 4.7 µF 1.5 Ω 1.9 × 3.5 × 2.8 195D106x0016x2T SPRAGUE 10 µF 1.5 Ω 1.3 × 7.0 × 2.7 695D106x003562T SPRAGUE 10 µF 1.3 Ω 2.5 × 7.6 × 2.5 TPSC475K035R0600 AVX 4.7 µF 0.6 Ω 2.6 × 6.0 × 3.2 † Size is in mm. ESR is maximum resistance in ohms at 100 kHz and TA = 25°C. Listings are sorted by height. |
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Similar Description - TPS76427 |
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