LD2985 ST Microelectronics, LD2985 Datasheet
LD2985
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LD2985 Summary of contents
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... LOW OUTPUT NOISE VOLTAGE 30 Vrms SMALLEST PACKAGE SOT23-5L TEMPERATURE RANGE: -40°C TO 125°C DESCRIPTION The LD2985 is a 150mA fixed output voltage regulator. The ultra low drop voltage and the low quiescent current make them particularly suitable for low noise, low power applications, and in ...
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... LD2985 SERIES ABSOLUTE MAXIMUM RATINGS Symbol V DC Input Voltage I V INHIBIT Input Voltage INH I Output Current O P Power Dissipation tot T Storage Temperature Range stg T Operating Junction Temperature Range op Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied ...
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... ELECTRICAL CHARACTERISTICS FOR LD2985A ( unless otherwise specified Symbol Parameter V Operating Input Voltage Op V Output Voltage O V Output Voltage O V Output Voltage O V Output Voltage O V Output Voltage O V Output Voltage O V Output Voltage O V Output Voltage O V Output Voltage ...
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... LD2985 SERIES Symbol Parameter V Output Voltage O V Output Voltage O I Short Circuit Current Line Regulation Dropout Voltage d I Quiescent Current d SVR Supply Voltage Rejection V Control Input Logic Low IL V Control Input Logic High IH I Control Input Current iNH eN Output Noise Voltage ...
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... ELECTRICAL CHARACTERISTICS FOR LD2985B ( unless otherwise specified Symbol Parameter V Operating Input Voltage Op V Output Voltage O V Output Voltage O V Output Voltage O V Output Voltage O V Output Voltage O V Output Voltage O V Output Voltage O V Output Voltage O V Output Voltage ...
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... LD2985 SERIES Symbol Parameter V Output Voltage O V Output Voltage O I Short Circuit Current Line Regulation Dropout Voltage d I Quiescent Current d SVR Supply Voltage Rejection V Control Input Logic Low IL V Control Input Logic High IH I Control Input Current iNH eN Output Noise Voltage ...
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... TYPICAL CHARACTERISTICS (unless otherwise specified T Figure 1 : Output Voltage vs Temperature Figure 2 : Dropout Voltage vs Temperature Figure 3 : Dropout Voltage vs Output Current = 25° =2 Figure 4 : Quiescent Current vs Load Current Figure 5 : Quiescent Current vs Temperature Figure 6 : Supply Voltage Rejection vs Temperature LD2985 SERIES =100nF) BYP 7/13 ...
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... LD2985 SERIES Figure 7 : Supply Voltage Rejection vs Output Current Figure 8 : Supply Voltage Rejection vs Output Current Figure 9 : Supply Voltage Rejection vs Frequency 8/13 Figure 10 : Supply Voltage Rejection vs Frequency Figure 11 : Line Transient V =2.5V 50mA =4 Figure 12 : Line Transient V =2.5V 50mA =4 ...
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... OUTPUT CAPACITOR The LD2985 is designed specifically to work with ceramic output capacitors. It may also be possible to use Tantalum capacitors, but these are not as attractive for reasons of size and cost. By the way, the output capacitor must meet both the requirement for minimum amount of capacitance and E.S.R. (equivalent series resistance) value. Due to the different loop gain, the stability improves for higher output versions and so the suggested minimum output capacitor value, if low E.S.R. ceramic type is used, is 1µ ...
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... LD2985 SERIES REVERSE CURRENT The power transistor used in the LD2985 has not an inherent diode connected between the regulator input and output. If the output is forced above the input, no current will flow from the output to the input across the series pass transistor. When a V flows to the GND across the two feedback resistors. This current typical value is 160µ ...
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... SOT23-5L MECHANICAL DATA DIM. MIN. A 0.90 A1 0.00 A2 0.90 b 0.35 C 0.09 D 2. 2.60 L 0.10 mm. TYP MAX. MIN. 1.45 0.10 1.30 0.50 0.20 3.00 110.2 1.75 0.95 3.00 102.3 0.60 . LD2985 SERIES mils TYP. MAX. 35.4 57.1 0.0 35.4 51.2 13.7 19.7 3.5 118.1 59.0 68.8 37.4 118.1 3.9 23.6 7049676C 3.9 7.8 11/13 ...
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... LD2985 SERIES Tape & Reel SOT23-xL MECHANICAL DATA DIM. MIN 12 3.13 Bo 3.07 Ko 1.27 Po 3.9 P 3.9 12/13 mm. TYP MAX. MIN. 180 13.0 13.2 0.504 0.795 2.362 14.4 3.23 3.33 0.123 3.17 3.27 0.120 1.37 1.47 0.050 4.0 4.1 0.153 4.0 4.1 0.153 inch TYP. MAX. 7.086 0.512 0.519 0.567 0.127 0.131 0.124 0.128 0.054 0.0.58 0.157 ...
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... STMicroelectronics - Printed in Italy - All Rights Reserved Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. STMicroelectronics GROUP OF COMPANIES © http://www.st.com LD2985 SERIES 13/13 ...