LT1521-3.3 LINER [Linear Technology], LT1521-3.3 Datasheet
LT1521-3.3
Related parts for LT1521-3.3
LT1521-3.3 Summary of contents
Page 1
... The quiescent current is well controlled; it does not rise in dropout as it does with many other low dropout PNP regulators. Other features of the LT1521/LT1521-3/LT1521-3.3/ LT1521-5 include the ability to operate with very small output capacitors. They are stable with only 1 the output while most older devices require between 10 F and 100 F for stability ...
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... IN SENSE/ADJ GND GND 3 6 GND SHDN S8 PACKAGE 8-LEAD PLASTIC SO *PIN 2 = SENSE FOR LT1521-3/LT1521-3.3/LT1521-5 = ADJ FOR LT1521 T = 125 JMAX JA SEE THE APPLICATIONS INFORMATION SECTION ORDER PART NUMBER LT1521CS8 LT1521CS8-3 LT1521CS8-3.3 LT1521CS8-5 LT1521IS8 LT1521IS8-3 LT1521IS8-3.3 LT1521IS8-5 ...
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... V = 1V(Avg 0.5V , OUT RIPPLE P–P = 120Hz 150mA LOAD – 7V OUT (NOMINAL) + 1.5V – 0.1V OUT OUT LT1521/LT1521-3 LT1521-3.3/LT1521-5 MIN TYP MAX 2.950 3.000 3.050 2.900 3.000 3.100 3.250 3.300 3.350 < 300mA 3.200 3.300 3.400 4.925 5.000 5.075 4.850 5.000 5 ...
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... ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS Input Reverse Leakage Current V Reverse Output Current (Note 11) LT1521-3 LT1521-3.3 LT1521-5 LT1521 (Note 5) The denotes specifications which apply over the full operating temperature range. Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. ...
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... INPUT VOLTAGE (V) LT1521/LT1521-3 LT1521-3.3/LT1521-5 LT1521-5 Output Voltage 5.08 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4.92 100 125 –50 – TEMPERATURE ( C) LT1521 • TPC05 LT1521-3.3 Quiescent Current INPUT VOLTAGE (V) LT1521 • TPC08 ...
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... LOAD I = 100mA* LOAD INPUT VOLTAGE (V) LT1521 • TPC17 Ground Pin Current (LT1521- 3.3V (LT1521-3. 125 (LT1521- 3.75V (LT1521 DEVICE IS OPERATING IN DROPOUT ...
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... OUTPUT VOLTAGE (V) LT1521 • TPC26 Reverse Output Current (LT1521-3) OUT V = 3.3V (LT1521-3.3) OUT (LT1521-5) OUT V = 3.75V (LT1521) OUT –50 – 100 125 TEMPERATURE ( C) LT1521 • TPC29 LT1521/LT1521-3 LT1521-3 ...
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... Applications Information section for more on output capacitance and reverse output characteristics. SENSE (Pin 2): For fixed voltage versions of the LT1521 (LT1521-3, LT1521-3.3, LT1521-5), the sense pin is the input to the error amplifier. Optimum regulation will be obtained at the point where the sense pin is connected to ...
Page 9
... C, flows through R2 into the adjust pin. The output voltage can be calculated using the formula in Figure 2. The value of R1 should be less than 400k to minimize errors in the output voltage caused by the adjust pin bias current. Note that in shutdown the LT1521/LT1521-3 LT1521-3.3/LT1521-5 9 ...
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... LT1521/LT1521-3 LT1521-3.3/LT1521 APPLICATIONS INFORMATION IN OUT V LT1521 IN SHDN ADJ GND 3.75V R2) OUT ADJ 3.75V ADJ I = 50nA ADJ OUTPUT RANGE = 3.75V TO 20V Figure 2. Adjustable Operation output is turned off and the divider current will be zero. Curves of Adjust Pin Voltage vs Temperature and Adjust Pin Bias Current vs Temperature appear in the Typical Performance Characteristics ...
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... For the adjustable version of the device, the output pin is internally clamped at one diode drop below ground. Reverse current for the adjustable device must be limited to 5mA. LT1521/LT1521-3 LT1521-3.3/LT1521-5 11 ...
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... A (see Figure 4). The state of the shutdown pin will have no effect on the reverse output current when the output is pulled above the input. LT1521 LT1521 LT1521 • F03 (LT1521-3) OUT V = 3.3V (LT1521-3.3) OUT (LT1521-5) 4 OUT LT1521-3 LT1521-3 LT1521 ...
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... REF (0.65) TYP LT1521/LT1521-3 LT1521-3.3/LT1521-5 RESULTING CONDITIONS Reverse Output Current 5 A (See Figure 3) Input Current 1 A (See Figure 4) Reverse Output Current 5 A (See Figure 3) Input Current 1 A (See Figure 4) Reverse Output Current 5 A (See Figure 3) Reverse Output Current 5 A (See Figure 3) ...
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... LT1521/LT1521-3 LT1521-3.3/LT1521-5 PACKAGE DESCRIPTION 0.010 – 0.020 (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 0.016 – 0.050 0.406 – 1.270 * DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" ...
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... Dimensions in inches (millimeters) unless otherwise noted. ST Package 3-Lead Plastic SOT-223 (LTC DWG # 05-08-1630) 0.033 – 0.041 (0.84 – 1.04) 10 – MAX 0.025 – 0.033 0.012 (0.64 – 0.84) (0.31) MIN 0.181 (4.60) NOM LT1521/LT1521-3 LT1521-3.3/LT1521-5 0.010 – 0.014 (0.25 – 0.36) 10 – 16 0.0008 – 0.0040 (0.0203 – 0.1016) ST3 (SOT-233) 0792 15 ...
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