LT1072CT Linear Technology, LT1072CT Datasheet
LT1072CT
Specifications of LT1072CT
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LT1072CT Summary of contents
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... LT1070 and the external components used with it, as well as complete formulas for calculating the values of these components. The manual can also be used for the LT1072 by factoring in the lower switch current rating. , LTC and LT are registered trademarks of Linear Technology Corporation. U TYPICAL APPLICATIO ...
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... TO-3 METAL CAN T = 150 C/ C/W JMAX 100 C C/ C/W JMAX JC JA OBSOLETE PACKAGE ORDER PART NUMBER FRONT VIEW LT1072CT GND 3 LT1072HVCT LT1072HVIT PACKAGE 5-LEAD TO-220 T = 100 C/ C/ C/W JMAX JC JA Consult LTC Marketing for parts specified with wider operating temperature ranges. ...
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ELECTRICAL CHARACTERISTICS temperature range. Unless otherwise specified, V SYMBOL PARAMETER V Reference Voltage REF I Feedback Input Current B gm Error Amplifier Transconductance Error Amplifier Source or Sink Current Error Amplifier Clamp Voltage Reference Voltage Line Regulation A Error Amplifier ...
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LT1072 W U TYPICAL PERFOR A CE CHARACTERISTICS Switch Current Limit vs Duty Cycle 4 3 –55°C 25°C 2 125° 100 DUTY CYCLE (%) LT1072 • TPC01 Minimum ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Driver Current* vs Switch Current 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 SWITCH CURRENT (A) *AVERAGE LT1072 POWER SUPPLY CURRENT IS ...
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LT1072 W U TYPICAL PERFOR A CE CHARACTERISTICS Transconductance of Error Amplifier 7000 6000 5000 4000 G m 3000 2000 1000 0 –1000 1k 10k 100k 1M 10M FREQUENCY (Hz) LT1072 • TPC19 W BLOCK DIAGRA V IN 2.3V REG ...
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U LT1072 OPERATIO The LT1072 is a current mode switcher. This means that switch duty cycle is directly controlled by switch current rather than by output voltage. Referring to the block diagram, the switch is turned “on” at the start ...
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LT1072 U LT1072 OPERATIO rough guide to calculate LT1072 power dissipation. For more details, the reader is referred to Application Note 19 (AN19), “Efficiency Calculations” section. Average supply current (including driver current) is: I ≈ 6mA + I (0.004 + ...
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U LT1072 OPERATIO Synchronizing with Bipolar Transistor V IN LT1072 V GND C C2 68pF R3 2N2369 C1 R2 2.2k U TYPICAL APPLICATIO 25µF* 5V GND V IN LT1072 GND FROM 5V ...
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LT1072 U TYPICAL APPLICATIO 30V LT1072 25µ GND C R3 1.5k C2 0.15µF * REQUIRED IF INPUT LEADS ≥ 2" ** OPTIONAL TO REPLACE ...
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U TYPICAL APPLICATIO S † D3 1N4001 + C4 5µF Positive to Negative Buck-Boost Converter † *REQUIRED IF INPUT LEADS ≥ 2" R5 **PULSE ENGINEERING 92113 470Ω † TO AVOID START-UP PROBLEMS 10 TO 30V C5 FOR ...
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LT1072 U TYPICAL APPLICATIO S OPTIONAL INPUT FILTER –20V 2.2µF + C5* 25µF 12 Driving High Voltage FET (for Offline Applications, See AN-25 20V LT1072 GND Negative ...
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U TYPICAL APPLICATIO 470µ –15V PACKAGE DESCRIPTIO CORNER LEADS OPTION .045 – .068 (1.143 – 1.650) FULL LEAD OPTION .300 BSC (7.62 BSC) .008 – .018 (0.203 – 0.457) NOTE: LEAD DIMENSIONS APPLY TO SOLDER ...
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LT1072 PACKAGE DESCRIPTIO .300 – .325 (7.620 – 8.255) .008 – .015 (0.203 – 0.381) .325 ( 8.255 NOTE: 1. DIMENSIONS ARE *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH ...
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... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... I =50µA/1mA, I <1µA, MS8, N8, S8 OUT 28V, I =100µA/4.8mA, I <30µA/28µA, MS8, OUT 35/42V, I =4.5mA, I <12µA, DD, T0220-7 OUT 35/42V, I =4mA, I <12µA, DD, S20, OUT Q SD LW/TP 1102 1K REV C • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1988 1072fc ...