LT3012 LINER [Linear Technology], LT3012 Datasheet
LT3012
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LT3012 Summary of contents
Page 1
... LT3012 an ideal choice. Quiescent current is also well controlled in dropout. Other features of the LT3012 include the ability to operate with very small output capacitors. The regulator is stable with only 3.3μF on the output while most older devices require between 10μ ...
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... Storage Temperature Range TSSOP Package ................................. –65°C to 150°C DFN Package ...................................... –65°C to 125°C Operating Junction Temperature Range (Notes 3, 10, 11) LT3012E ............................................. –40°C to 125°C LT3012HFE ......................................... –40°C to 140°C Lead Temperature (FE16 Soldering, 10 sec) ......... 300° ...
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... IN LOAD = 4V to 80V 1mA (Note 2) IN LOAD = 4.75V, ΔI = 1mA to 200mA LOAD = 4.75V, ΔI = 1mA to 200mA LOAD = 10mA = 10mA = 50mA = 50mA = 200mA = 200mA = 0mA = 100mA = 200mA LT3012 MIN TYP MAX l 4 4.75 1.225 1.24 1.255 l 1.2 1.24 1. 160 230 l 300 250 ...
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... Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LT3012 is tested and specifi ed for these conditions with the ADJ pin connected to the OUT pin. Note 3: Operating conditions are limited by maximum junction temperature. The regulated output voltage specifi ...
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... 25mA 1.24k 1mA* 0 INPUT VOLTAGE (V) LT3012 Dropout Voltage 600 500 I = 250mA L 400 300 I = 10mA L 200 I = 1mA L 100 0 – 250 –25 TEMPERATURE (°C) 3012 G02 Quiescent Current 25°C J ∞ ...
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... LT3012 TYPICAL PERFORMANCE CHARACTERISTICS GND Pin Current vs I LOAD 4.75V 25° 1.24V OUT 100 150 200 LOAD CURRENT (mA) 3012 G10 SHDN Pin Current 0 SHDN CURRENT FLOWS 0.5 OUT OF SHDN PIN 0.4 0.3 0.2 0.1 0 –50 ...
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... Output Noise Spectral Density 10 C OUT I LOAD 1 0.1 0. 100 125 150 10 3012 G22 Transient Response 0.15 0.10 0.05 0 –0.05 –0.10 –0.15 300 200 3012 G24 100 0 0 LT3012 Minimum Input Voltage 5 250mA LOAD 4.5 4.0 3.5 3.0 2.5 = 10μF 2.0 1.5 1.0 0 – –25 TEMPERATURE (°C) 3012 G20 = 3.3μF = 250mA 100 1k ...
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... In battery backup applications where the output can be held backup battery when the input is pulled to ground, the LT3012 acts like it has a diode in series with its output and prevents reverse current fl ow. 8 SHDN (Pin 8)/(Pin 11): Shutdown. The SHDN pin is used to put the LT3012 into a low power shutdown state. The output will be off when the ⎯ ...
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... OUT (12V/1.24V) • (–7mV) = –68mV Output Capacitance and Transient Response The LT3012 is designed to be stable with a wide range of output capacitors. The ESR of the output capacitor affects stability, most notably with small capacitors. A minimum output capacitor of 3.3μF with an ESR of 3Ω or less is recommended to prevent oscillations ...
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... For a ceramic capacitor the stress can be induced by vibrations in the system or thermal transients. Current Limit and Safe Operating Area Protection Like many IC power regulators, the LT3012 has safe oper- ating area protection. The safe operating area protection decreases the current limit as the input voltage increases and keeps the power transistor in a safe operating region ...
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... Some tantalum capacitors are available for high temperature operation, but ESR is often several ohms; capacitor ESR above 3Ω is unsuitable for use with the LT3012. Ceramic capacitor manufacturers (Murata, AVX, TDK, and Vishay Vitramon at this writing) now offer ceramic capacitors that are rated to 150° ...
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... OUTPUT VOLTAGE (V) Figure 4. Reverse Output Current When the IN pin of the LT3012 is forced below the OUT pin or the OUT pin is pulled above the IN pin, input cur- rent will typically drop to less than 2μA. This can happen if the input of the LT3012 is connected to a discharged (low voltage) battery and the output is held up by either a backup battery or a second regulator circuit ...
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... GND 249k 60μH ABOVE 1A 1 Buck Converter Effi ciency vs Load Current 100 OUT L = 68μ 10V 42V 0.25 0.50 0.75 1.00 LOAD CURRENT (A) LT3012 D2 D1N914 † V OUT 5V 1A/250mA 15.4k 100μF 10V SOLID R2 TANTALUM 4.99k 3012 TA03 1.25 3012 TA04 3012fd 13 ...
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... OFF ON Constant Brightness for Indicator LED over Wide Input Voltage Range 14 LT3012 Automotive Application IN OUT NO PROTECTION LT3012 750k DIODE NEEDED! SHDN ADJ GND 249k LT3012 Telecom Application IN OUT LT3012 750k NO PROTECTION DIODE NEEDED! SHDN ADJ GND 249k RETURN IN OUT LT3012 1μF ...
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... BSC (.020 – .030) 4. RECOMMENDED MINIMUM PCB METAL SIZE FOR EXPOSED PAD ATTACHMENT MILLIMETERS (INCHES) *DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.150mm (.006") PER SIDE LT3012 R = 0.115 TYP 0.05 TYP 3.30 ±0.10 3.00 ±0.10 1.70 ± 0.10 (2 SIDES 0.25 ± ...
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... LT3012 RELATED PARTS PART NUMBER DESCRIPTION LT1020 125mA, Micropower Regulator and Comparator V LT1120/LT1120A 125mA, Micropower Regulator and Comparator V LT1121/LT1121HV 150mA, Micropower, LDO LT1129 700mA, Micropower, LDO LT1676 60V, 440mA (I ), 100kHz, High Effi ciency OUT Step-Down DC/DC Converter LT1761 100mA, Low Noise Micropower, LDO ...