LT1111CN8-12 Linear Technology, LT1111CN8-12 Datasheet
LT1111CN8-12
Specifications of LT1111CN8-12
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LT1111CN8-12 Summary of contents
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... Switch current limit can be programmed with a single resistor. An auxiliary open-collector gain block can be configured as a low-battery detector, linear post regulator, undervoltage lock-out circuit, or error amplifier. For input sources of less than 2V use the LT1110. , LTC and LT are registered trademarks of Linear Technology Corporation MBRS120T3 5V 100mA + 33 F LT1111 • ...
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... Operating Temperature Range LT1111C ............................................... LT1111I ......................................... – 105 C IN LT1111M (OBSOLETE) ............. – 125 C Storage Temperature Range ................ – 150 C Lead Temperature (Soldering, 10 sec)................. 300 ORDER PART NUMBER TOP VIEW LT1111CN8 LT1111CN8 LIM LT1111CN8- SW1 3 SW2 4 S8 PACKAGE 8-LEAD PLASTIC SO *FIXED VERSION LT1111MJ8 LT1111MJ8-5 JMAX LT1111MJ8-12 ...
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ELECTRICAL C HARA TERISTICS C temperature range, otherwise specifications are at T SYMBOL PARAMETER I Feedback Pin Bias Current FB I Set Pin Bias Current SET V Gain Block Output Low OL Reference Line Regulation A Gain Block Gain V ...
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LT1111 W U TYPICAL PERFOR A Oscillator Frequency 100 –50 – 100 TEMPERATURE ( C) LT1111 • TPC01 Duty Cycle ...
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W U TYPICAL PERFOR A Quiescent Current 400 380 360 340 320 300 280 260 240 220 200 INPUT VOLTAGE (V) LT1111 • TPC10 Set Pin Bias Current 100 ...
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LT1111 AGRA S BLOCK LT1111 + SET A2 A0 – GAIN BLOCK/ ERROR AMP + 1.25V REFERENCE OSCILLATOR A1 – COMPARATOR GND FB U OPERATIO The LT1111 is a gated oscillator switcher. This type architecture ...
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PPLICATI S I FOR ATIO A Inductor Selection — General A DC/DC converter operates by storing energy as mag- netic flux in an inductor core, and then switching this energy into the load. Since it is flux, ...
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LT1111 PPLICATI S I FOR ATIO A Picking an inductor value with 0.2 DCR results in a peak switch current of: – • ...
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PPLICATI S I FOR ATIO switch closes, current in the inductor builds according to – – where R = 0.65 + DCR ...
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LT1111 PPLICATI S I FOR ATIO Diode Selection Speed, forward drop, and leakage current are the three main considerations in selecting a catch diode for LT1111 converters. General purpose rectifiers such as the 1N4001 are unsuitable ...
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PPLICATI S I FOR ATIO When the switch turns off, the SW2 pin falls rapidly and actually goes below ground. D1 turns on when SW2 reaches 0.4V below ground. D1 MUST BE A SCHOTTKY DIODE . ...
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LT1111 PPLICATI S I FOR ATIO LIM IN SW1 + LT1111 GND SW2 R2 –V IN Figure 8. Negative-to-Positive Converter Using the I Pin LIM The LT1111 switch can be ...
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PPLICATI S I FOR ATIO Using the Gain Block The gain block (GB) on the LT1111 can be used as an error amplifier, low-battery detector or linear post regulator. The gain block itself is a very ...
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LT1111 O TYPICAL A PPLICATI 2 1.5V CELLS * L1 = SUMIDA CD54-270K FOR 5V INPUT CHANGE CONVERTER WILL DELIVER –22V AT 40mA Step-Down Converter 100 LIM SW1 9V LT1111-5 ...
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... FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... OUT 65V/75V 6mA <100 A, Can be Used for OUT 28V A/1mA 28V 100 A/4.8mA A/28 A OUT 35V/42V 4.5mA <12 A, Can be Used for OUT 35V/42V 4mA <12 A, Can be Used for OUT Q SD LT/TP 0103 1K REV D • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1994 1111fd ...