LT1121-3.3 Linear Technology, LT1121-3.3 Datasheet
LT1121-3.3
Related parts for LT1121-3.3
LT1121-3.3 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 LT1121/LT1121-3.3/LT1121-5 in- clude the ability to operate with very small output capaci- tors. They are stable with only 0. the output while most older devices require between 1 F and 100 F for stability ...
Page 2
... Output Pin Reverse Current ................................. 10mA Adjust Pin Current ............................................... 10mA Shutdown Pin Input Voltage (Note 1) ........ 6.5V, – 0.6V Shutdown Pin Input Current (Note 1) .................. 20mA Output Short-Circuit Duration ......................... Indefinite U PACKAGE/ORDER I FOR ATIO TOP VIEW PIN FOR LT1121-3.3/LT1121-5 * OUT ADJ FOR LT1121 ** PINS 6 AND 7 ARE FLOATING (NO ...
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... The regulated output voltage specification will not apply for all possible combinations of input voltage and output current. When operating at maximum input voltage, the output current range must be limited. When operating at maximum output current the input voltage range must be limited. LT1121/LT1121-3.3/LT1121 1mA to 150mA, T LOAD J ...
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... 100 LOAD OPEN SHDN SHDN INPUT VOLTAGE (V) 1121 G04 LT1121-3.3 Output Voltage 3. 1mA OUT 3.36 3.34 3.32 3.30 3.28 3.26 3.24 3.22 – 100 125 –25 TEMPERATURE (°C) 1121 G22 HARA TERISTICS C Dropout Voltage ...
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... LOAD 50mA* LOAD 1 *FOR V = 3.3V OUT INPUT VOLTAGE (V) 1121 G09 Ground Pin Current 14 V 3.3V (LT1121-3. (LT1121- 3.75V (LT1121) IN DEVICE IS OPERATING 10 IN DROPOUT T 125° 25° –55° ...
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... TEMPERATURE (°C) 1121 G15 Reverse Output Current (LT1121-5) 25 OUT V = 3.3V (LT1121-3.3) OUT V = 3.8V (LT1121) OUT –50 – 100 125 TEMPERATURE (°C) 1121 G13 Reverse Output Current 100 T = 25°C ...
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... See the Applications Information section for recommended value of output capacitance and information on reverse output characteristics. Shutdown Pin: This pin is used to put the device into shutdown. In shutdown the output of the device is turned LT1121/LT1121-3.3/LT1121-5 C HARA TERISTICS C CE LT1121-5 ...
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... LT1121/LT1121-3.3/LT1121 PPLICATI S I FOR ATIO The LT1121 is a micropower low dropout regulator with shutdown, capable of supplying up to 150mA of output current at a dropout voltage of 0.4V. The device operates with very low quiescent current (30 A). In shutdown the quiescent current drops to only addition to the ...
Page 9
... Tab of device attached to topside copper LT1121/LT1121-3.3/LT1121 Table 5. TO-92 Package Package alone Package soldered into PC board with plated through holes only THERMAL RESISTANCE (JUNCTION-TO-AMBIENT) Package soldered into PC board with 1/4 sq ...
Page 10
... T = 25° < OUT CURRENT FLOWS 80 INTO OUTPUT PIN TO GROUND 70 LT1121 OUT ADJ 50 40 LT1121-3 LT1121 OUTPUT VOLTAGE (V) 1121• F02 Figure 2. Reverse Output Current ...
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... Reverse Output Current 15 A (See Figure 2) OUT (Nominal) Reverse Output Current 15 A (See Figure 2) OUT 0V Output Current = 0 0V Output Current = 0 0V Output Current = Short-Circuit Current 0V Output Current = 3.3V (LT1121-3.3) OUT (LT1121-5) OUT INPUT VOLTAGE (V) 1121 F03 Figure 3 ...
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... LT1121/LT1121-3.3/LT1121-5 PACKAGE DESCRIPTIO 0.300 – 0.320 (7.620 – 8.128) 0.009 – 0.015 (0.229 – 0.381) +0.025 0.045 ± 0.015 0.325 –0.015 (1.143 ± 0.381) +0.635 8.255 –0.381 0.010 – 0.020 45 (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 0.016 – ...