LT1762 LINER [Linear Technology], LT1762 Datasheet
LT1762
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LT1762 Summary of contents
Page 1
... A quiescent current makes them an ideal choice. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators. A key feature of the LT1762 regulators is low output noise. With the addition of an external 0.01 F bypass capacitor, output noise drops bandwidth. The LT1762 regulators are stable with output capacitors as low as 2 ...
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... LT1762 (Note RATINGS PACKAGE/ORDER OUT 1 SENSE/ADJ* 2 BYP 3 GND 4 8-LEAD PLASTIC MSOP *PIN 2: SENSE FOR LT1762-2.5/ LT1762-3/LT1762-3.3/LT1762-5 T JMAX SEE THE APPLICATIONS INFORMATION SECTION. Consult factory for Industrial and Military grade parts 1mA IN LOAD 3.5V < V < 20V, 1mA < I < 150mA ...
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... LT1762-3 LT1762-3.3 LT1762-5 LT1762 (Note 3) Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LT1762 regulators are tested and specified under pulse load conditions such that The LT1762 is 100% tested Performance at – ...
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... LOAD CURRENT (mA) 1762 G01 Quiescent Current (LT1762-2.5/-3/-3.3/- 250k (LT1762 SHDN – –50 100 TEMPERATURE ( C) 1762 G04 LT1762-3.3 Output Voltage 3 ...
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... R = 330 10mA* L 300 200 1mA* 100 INPUT VOLTAGE (V) 1762 G17 LT1762 Series LT1762-3.3 Quiescent Current 400 350 300 250 200 150 100 SHDN SHDN ...
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... LT1762 Series W U TYPICAL PERFORMANCE CHARACTERISTICS LT1762 GND Pin Current 800 700 IN SHDN *FOR V = 1.22V OUT 600 25mA* L 500 400 R = 122 10mA* L 300 200 R = 1.22k 1mA* 100 INPUT VOLTAGE (V) 1762 G19 LT1762-3 ...
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... INPUT VOLTAGE (V) 1762 G31 Reverse Output Current 1.22V (LT1762) OUT V = 2.5V (LT1762-2.5) 25 OUT (LT1762-3) OUT V = 3.3V (LT1762-3.3) OUT (LT1762-5) OUT 15 LT1762-2.5/-3/-3.3/-5 10 LT1762 5 0 –50 – 100 125 TEMPERATURE ( C) 1762 G34 SHDN Pin Input Current 1.6 V SHDN 1.4 1.2 1.0 0.8 ...
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... LT1762 Series W U TYPICAL PERFORMANCE CHARACTERISTICS Ripple Rejection OUT (NOMINAL 0.5V RIPPLE P 120Hz 150mA L 52 –50 – 100 125 TEMPERATURE ( C) 1762 G37 Output Noise Spectral Density BYP OUT I = 150mA L LT1762-3.3 ...
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... G44 V 100 V/DIV 1762 G46 0. OUT 0.02 –0.02 –0.04 1600 2000 1762 G48 LT1762 Series LT1762-5 10Hz to 100kHz Output Noise C = 100pF BYP OUT 1ms/DIV OUT I = 150mA L 1762 G45 LT1762-5 10Hz to 100kHz Output Noise C = 0.01 F BYP ...
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... SENSE (Pin 2): Output Sense. For fixed voltage versions of the LT1762 (LT1762-2.5/LT1762-3/LT1762-3.3/ LT1762-5), the SENSE pin is the input to the error ampli- fier. Optimum regulation will be obtained at the point where the SENSE pin is connected to the OUT pin of the regulator ...
Page 11
... In battery backup applications where the output can be held backup battery when the input is pulled to ground, the LT1762-X acts like it has a diode in series with its output and prevents reverse current flow. Additionally, in dual supply applications where the regulator load is re- ...
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... U APPLICATIONS INFORMATION Output Capacitance and Transient Response The LT1762 regulators are designed to be stable with a wide range of output capacitors. The ESR of the output capacitor affects stability, most notably with small capaci- tors. A minimum output capacitor of 2.2 F with an ESR less is recommended to prevent oscillations. The LT1762 micropower device and output transient response will be a function of output capacitance ...
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... Pin Current curves in the Typical Performance Character- istics. Power dissipation will be equal to the sum of the two components listed above. The LT1762 series regulators have internal thermal limit- ing designed to protect the device during overload condi- tions. For continuous normal conditions, the maximum junction temperature rating of 125 C must not be exceeded ...
Page 14
... Current flow back into the output will follow the curve shown in Figure 7. When the IN pin of the LT1762-X is forced below the OUT pin or the OUT pin is pulled above the IN pin, input current will typically drop to less than 2 A. This can happen if the ...
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... DWG # 05-08-1660) 0.118 0.004* (3.00 0.102) 0.193 0.006 (4.90 0.15) 0.040 0.006 (1.02 0.15) 0 – 6 TYP SEATING PLANE 0.012 0.021 0.006 (0.30) (0.53 0.015) 0.0256 REF (0.65) LT1762 Series 9 10 1762 F07 0.118 0.004** (3.00 0.102 0.034 0.004 (0.86 0.102) 0.006 0.004 (0.15 0.102) MSOP (MS8) 1098 BSC ...
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... LT1762 Series U TYPICAL APPLICATION + C1 V > 3. SHDN RELATED PARTS PART NUMBER DESCRIPTION LT1120 125mA Low Dropout Regulator with LT1121 150mA Micropower Low Dropout Regulator LT1129 700mA Micropower Low Dropout Regulator LT1175 500mA Negative Low Dropout Micropower Regulator LT1521 300mA Low Dropout Micropower Regulator with Shutdown ...