LT1585A ON Semiconductor, LT1585A Datasheet
LT1585A
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LT1585A Summary of contents
Page 1
... Low Dropout Fast Response Positive Adjustable and Fixed Voltage Regulators The LT1585A is a low dropout 3–terminal voltage regulator with 5A output current capability. Design has been optimized for low voltage applications where transient response and minimum input voltage are critical. This voltage regulator features a low dropout voltage and fast transient response ...
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... Minimum Load Current (LT1585A) 1. –V out ) Quiescent Current (LT1585A–1. Ripple Rejection LT1585A 120Hz, C out = ant –V out ) = 3V, I out = 5A LT1585A–1. 120Hz, C out = ant 4.5V, I out = 5A Thermal Regulation 30ms Pulse Temperature Stability Long Term Stability 125 C, 1000 Hrs RMS Output Noise (% of V out ) 10Hz NOTES 1 ...
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... TEMPERATURE ( C) MOTOROLA ANALOG IC DEVICE DATA LT1585A Figure 2. Short–Circuit Current vs Temperature 7.0 6.8 6.6 – 6.2 125 C 6.0 5.8 5.6 5.4 5.2 5.0 5.0 6.0 –60 –40 –20 Figure 4. LT1585A Reference Voltage vs 1.275 1.27 1.265 1.26 1.255 1.25 1.245 1.24 1.235 1.23 1.225 80 100 120 140 –60 –40 –20 Figure 6. LT1585A–1.5 Quiescent Current vs 10 9.5 9.0 8.5 8.0 7.5 7.0 6 ...
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... Stability The circuit design in the LT1585A requires the use of an output capacitor as part of the frequency compensation. For all operating conditions, the addition solid tantalum or a 100 F aluminium electrolytic on the output ensures stability ...
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... Only with large values of output capacitance, such as 1000 F to 500 F, and with the input pin instantaneously shorted to ground can damage occur. A crowbar circuit at the input of the LT1585A can generate those levels of current, and a diode from output to input is then recommended. This is shown in Figure 10. Usually, normal power supply cycling or system “ ...
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... Use a thermally conductive spacer if the case of the device must be electrically isolated and include its contribution to the total thermal resistance. For example, using an LT1585ACT (TO–220 package) with an output adjusted to 3.3 V and assuming (Max Continuous) = 5.25V (5V + 5%), V out = 3.3V OUT = 5A ...
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... Minimum Parts Count LT1585A Adjustable Circuit for the Intel 120 MHz Pentium Processor Thermalloy Ç Ç Ç Ç Ç Ç 7020B–MT Ç Ç Ç Ç Ç Ç LT1585ACT 4. 5. ADJ m 220 AVX TPS C4 3 EACH 330 AVX X7R0805 LT1585A Transient Response for 3 ...
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... A CHAMFER 0.010 (0.254 LT1585A OUTLINE DIMENSIONS T SUFFIX PLASTIC PACKAGE CASE 221A–09 NOTES: ISSUE Z 1. DIMENSIONING AND TOLERANCING PER ANSI SEATING 2. CONTROLLING DIMENSION: INCH. –T– PLANE 3. DIMENSION Z DEFINES A ZONE WHERE ALL SUFFIX PLASTIC PACKAGE CASE 936– ...
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... Motorola, Inc. Motorola, Inc Equal Mfax is a trademark of Motorola, Inc. JAPAN: Motorola Japan Ltd.; SPD, Strategic Planning Office, 141, 4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan. 81–3–5487–8488 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre, 852–26629298 LT1585A/D 9 ...